HEY YA'LL 30 PTS FOR 1 PROBLEM!
Given: m∠EYL=1/3 the measure of arc EHL
Find: m∠EYL.

HEY YA'LL 30 PTS FOR 1 PROBLEM!Given: MEYL=1/3 The Measure Of Arc EHLFind: MEYL.

Answers

Answer 1

Answer:

45

Step-by-step explanation:

Two tangents drawn to a circle from an outside point form arcs and an angle, and this formula shows the relation between the angle and the two arcs.

m<EYL = (1/2)(m(arc)EVL - m(arc)EHL)      Eq. 1

The sum of the angle measures of the two arcs is the angle measure of the entire circle, 360 deg.

m(arc)EVL + m(arc)EHL = 360

m(arc)EVL = 360 - m(arc)EHL      Eq. 2

We are given this:

m<EYL = (1/3)m(arc)EHL       Eq. 3

Substitute equations 2 and 3 into equation 1.

(1/3)m(arc)EHL = (1/2)[(360 - m(arc)EHL) - m(arc)EHL]

Now we have a single unknown, m(arc)EHL, so we solve for it.

2m(arc)EHL = 3[360 - m(arc)EHL - m(arc)EHL]

2m(arc)EHL = 1080 - 6m(arc)EHL

8m(arc)EHL = 1080

m(arc)EHL = 135

Substitute the arc measure just found in Equation 3.

m<EYL = (1/3)m(arc)EHL

m<EYL = (1/3)(135)

m<EYL = 45


Related Questions

What is the volume of the regular pyramid below?

Answers

For this case we have by definition that the volume of the pyramid shown is given by:

[tex]V = \frac {A_ {b} * h} {3}[/tex]

Where:

[tex]A_ {b}:[/tex] Is the area of the base of a square

h: It's the height

According to the data of the figure shown we have:

[tex]A_ {b} = 10 * 10 = 10 ^ 2 = 100 \ units ^ 2\\h = 81 \ units[/tex]

Substituting:

[tex]V = \frac {100 * 81} {3}\\V = \frac {8100} {3}\\V = 2700 \ units ^ 3[/tex]

Answer:

Option D

Answer:

The correct answer is option D.  2700 units²

Step-by-step explanation:

Formula:-

Volume of pyramid = (a²h)/3

Where a -  side of base

h - height of pyramid

To find the volume of pyramid

Here base side = 10 units and h = 81 units

Volume = (a²h)/3

 = (10² * 81)/3 = 8100/3 = 2700  units²

Therefore the correct answer is option D.  2700 units²

Find one positive angle and one negative angle that are coterminal with the given angle. Explain.

10. 255°

12. -800° ​

Answers

Answer: 10) 615° & -105°

               12) -440° & 280°

Step-by-step explanation:

Coterminal means it is in the exact same spot on the Unit Circle but one or more rotations clockwise or counterclockwise.

Since one rotation = 360°, add or subtract that from the given angle until you get a positive or negative number.

10) 255° + 360° = 615°     (this is a POSITIVE coterminal angle to 255°)

     255° - 360° = -105°     (this is a Negative coterminal angle to 255°)

12) -800° + 360° = -440°   (this is a Negative coterminal angle to -800°)

    -440° + 360° =  -80°      (this is a Negative coterminal angle to -800°)

      -80° + 360° = 280°     (this is a POSITIVE coterminal angle to -800°)

Final answer:

Coterminal angles for 255° are 615° (positive) and -105° (negative) by adding or subtracting 360° respectively. For -800°, the coterminal angles are -80° (positive) and -1160° (negative).

Explanation:

To find a positive and a negative angle coterminal with the given angle of 255°, we can add or subtract multiples of 360° (the total degrees in a circle). For a positive coterminal angle, we can add 360° to 255°:

255° + 360° = 615°

For a negative coterminal angle, we subtract 360° from 255° until we get a negative result:

255° - 360° = -105°

Similarly, for -800°, to find a positive coterminal angle, we keep adding 360° until we get a positive result:

-800° + 360° = -440°
-440° + 360° = -80°

For a negative coterminal angle, we can subtract 360° from -800°:

-800° - 360° = -1160°

Examine today’s stock listing for SFT Legal, shown below.








52 wk High


52 wk Low


Symbol


Div.


Close


Net Change



74.80


44.61


SFT


8.94


56.11


5.74







What was the price of SFT Legal yesterday?

Answers

Answer:

its D

Step-by-step explanation:

Answer:it would be c because the stock increased by 5.74 over yesterday’s price

Step-by-step explanation:

is this right? in the triangle below what ration is csc 0?

Answers

Answer:

[tex]\frac{13}{5}[/tex]

Step-by-step explanation:

we know that

[tex]csc(\theta)=\frac{1}{sin(\theta)}[/tex]

In this problem

[tex]sin(\theta)=\frac{1.5}{3.9}[/tex]

substitute

[tex]csc(\theta)=\frac{3.9}{1.5}[/tex]

Multiply by 10 both numerator and denominator

[tex]csc(\theta)=\frac{39}{15}[/tex]

Divide by 3 both numerator and denominator

[tex]csc(\theta)=\frac{13}{5}[/tex]

The Earth completely rotates on its axis once every 24 hours.

A) How long does it take for it to rotate 310 degrees?

B) How long does it take to rotate 5 radians?

C) The diameter of the Earth is approximately 7920 miles. How far will a point on the equator rotate in 2 hours?

Show all work. Give answers to the nearest hundredth. Include the units in your response.

Answers

Answer:

A)

62/3 = 20.67 hours

B)

60.00 hours

C)

2074.29 miles

Step-by-step explanation:

If we assume the earth is a perfect circle, then in a complete rotation the earth covers 360 degrees or 2π radians.

A)

In 24 hours the earth rotates through an angle of 360 degrees. We are required to determine the duration it takes to rotate through 310 degrees. Let x be the duration it takes the earth to rotate through 310 degrees, then the following proportions hold;

(24/360) = (x/310)

solving for x;

x = (24/360) * 310 = 62/3 = 20.67 hours

B)

In 24 hours the earth rotates through an angle of 2π radians. We are required to determine the duration it takes to rotate through 5π radians. Let x be the duration it takes the earth to rotate through 5π radians, then the following proportions hold;

(24/2π radians) = (x/5π radians)

Solving for x;

x = (24/2π radians)*5π radians = 60 hours

C)

If the diameter of the earth is 7920 miles, then in 24 hours a point on the equator will rotate through a distance equal to the circumference of the Earth. Using the formula for the circumference of a circle we have;

circumference = 2*π*R = π*D

                         = 7920π miles

Therefore, the speed of the earth is approximately;

(7920π miles)/(24 hours) = 330π miles/hr

The distance covered by a point in 2 hours will thus be;

330π * 2 = 660π miles = 2074.29 miles

SOMEONE PLEASE JUST ANSWER THIS FOR BRAINLIEST!!!

Answers

Answer:

Step-by-step explanation:

(3w^4-8w^2z^2+4z^4)-(5w^4+7w^2z^2-8z^4)

=3w^4-8w^2z^2+4z^4-5w^4-7w^2z^2+8z^4

=(3-5)w^4+(-8-7)w^2z^2+(4+8)z^4

so she made mistake in step 2.

Trapezoid ABCD and WXYZ are congruent trapezoids. What is the value of x?

A. x = -5
B. x = 5
C. x = 15
D. x = -15

Answers

Answer:

B. x=5

Step-by-step explanation:

Two shapes are congruent if you can turn one into the other by moving, rotating or flipping. So if we rotate 180 degrees, say, trapezoid WXYZ and then moving it to the left, it will match trapezoid ABCD. If so, it will be true that:

[tex]\angle BAD=\angle XWZ \\ \\ \angle BAD=4x-7 \\ \\ \angle XWZ=2x+3 \\ \\ 4x-7=2x+3 \\ \\ Solving \ for \ x: \\ \\ 4x-2x=7+3 \\ \\ 2x=10 \\ \\ \boxed{x=5}[/tex]

Answer:

Answer is B x=5

Step-by-step explanation:

Hope this helps!!

Please help!!! Show work if needed

Answers

Answer:

2h+2f=10.50

4h+3f=19.50

Step-by-step explanation:

2h+2f=10.50

4h+3f=19.50

• To solve a pair of equations using substitution, first solve one of the equations for one of the variables. Then substitute the result for that variable in the other equation.

{2h2f=10.5,4h3f=19.5}

• Choose one of the equations and solve it for h by isolating h on the left hand side of the equal sign.

2h+2f=10.5

• Subtract 2f from both sides of the equation.

2h=−2f+10.5

• Divide both sides by 2.

h=1/2 (−2f+10.5)

• Multiply 1/2  times −2f+10.5.

h=−f+21/4

• Substitute −f+21/4  for h in the other equation, 4h+3f=19.5.

4(−f+21/4)+3f=19.5

• Multiply 4 times −f+21/4.

−4f+21+3f=19.5

• Add −4f to 3f.

−f+21=19.5

• Subtract 21 from both sides of the equation.

−f=−1.5

• Divide both sides by −1.

f=1.5

• Substitute 1.5 for f in h=−f+21/4. Because the resulting equation contains only one variable, you can solve for h directly.

h=−1.5+21/4

• Add 21/4  to −1.5 by finding a common denominator and adding the numerators. Then reduce the fraction to lowest terms if possible.

h=15/4  

Find the value of X. If necessary, round your answer to the nearest tenth.

Answers

Answer:

D. 10

Step-by-step explanation:

The chord is bisected as shown by the perpendicular lines and right angle, so both segments are 6.

Draw a radius from the center to the end of the chord to create a right triangle. 8 and 6 are the legs, use pythagorean theorem to find the length of the segment you drew because its the hypotenuse.

8^2+6^2=x^2

64+36

100

square root of 100 is 10

So, 10 is the length of the segment. Both the x segment and the 10 segment are radii because they are draw from the center to a point on the circle.

They are equal.

x=10

ANSWER

10

EXPLANATION

The value of x is the radius of the circle.

The radius of the circle is also the hypotenuse of the right triangle formed by the chord, the radius and the segment bisecting the chord through the center.

We apply the Pythagoras Theorem to obtain:

[tex] {x}^{2} = {8}^{2} + {6}^{2} [/tex]

[tex] {x}^{2} = 64 + 36[/tex]

[tex] {x}^{2} = 100[/tex]

Take positive square root

[tex]x = \sqrt{100} [/tex]

[tex]x = 10[/tex]

Which conic section is represented by the equation shown below?

[tex]2x^2-9x+4y^2+8x=16[/tex]

A. Parabola
B. Ellipse
C. Circle
D. Hyperbola

Answers

Answer: Option B.  Ellipse

[tex]\frac{(x-\frac{1}{4})^2}{\frac{129}{16}}+\frac{(y-0)^2}{\frac{129}{32}}=1[/tex]

Step-by-step explanation:

To know what type of conic section the function is

[tex]2x ^ 2-9x + 4y ^ 2 + 8x = 16[/tex] we must simplify it.

[tex]2x ^ 2-9x + 4y ^ 2 + 8x = 16\\\\2x^2 -x +4y^2 =16[/tex]

complete the square of the expression:

[tex]2x ^ 2 -x\\\\\\2(x^2 -\frac{1}{2}x)\\\\2(x^2-\frac{1}{2}x +\frac{1}{16})-2\frac{1}{16}\\\\2(x-\frac{1}{4})^2 -\frac{1}{8}[/tex]

So we have

[tex]2(x-\frac{1}{4})^2 -\frac{1}{8}+4y^2 =16\\\\2(x-\frac{1}{4})^2+4y^2 =\frac{129}{8}\\\\\frac{8}{129}[2(x-\frac{1}{4})^2] +\frac{8}{129}[4y^2] =1\\\\\frac{16(x-\frac{1}{4})^2}{129}+\frac{32(y-0)^2}{129}=1[/tex]

[tex]\frac{(x-\frac{1}{4})^2}{\frac{129}{16}}+\frac{(y-0)^2}{\frac{129}{32}}=1[/tex]

We know that the general equation of an ellipse has the form

[tex]\frac{(x-h)^2}{a^2} +\frac{(y-k)^2}{b^2}=1[/tex]

Then the equation

[tex]\frac{(x-\frac{1}{4})^2}{\frac{129}{16}}+\frac{(y-0)^2}{\frac{129}{32}}=1[/tex]

is an ellipse with center [tex](\frac{1}{4}, 0)[/tex]

[tex]a =\sqrt{\frac{129}{16}}[/tex]  and  [tex]b=\sqrt{\frac{129}{32}}[/tex]

Observe the attached image

Help is much needed!!!!

Answers

Answer:

b = 6√3.

Step-by-step explanation:

Use trigonometry.

cos 30 = adjacent side / hypotenuse = b / 12

√3 / 2 = b / 12

2b = 12√3

b = 6√3 answer.

Which of these constructions is impossible using only a compass and straightedge?

A. Doubling the square
B. Bisecting any angle
C. Doubling the cube
D. Trisecting a right angle

Answers

Answer:

C.

Step-by-step explanation:

The topic is on: 'impossible geometric construction"

The three areas of concern are : Trisecting an angle, squaring a circle and doubling a cube.

In double a cube the , when the edge in 1 unit will give the equation will give the equation x³=2 whose solution yields cube root of 2. This problem can not be solve because cube root of 2 is not an Euclidean number.

Answer:

C. Doubling the cube.

Step-by-step explanation:

Geometric construction is majorly a two dimensional drawing, excluding some form of projections (isometric and oblique drawing) which are three dimensional. Essential instruments to use in construction are; a pair of compass and straightedge (eg ruler).

From the options stated in the given question, doubling the cube is difficult to construct using the instruments given. A cube is a three dimensional shape that has all sides to be equal. It is a prism formed from a square, and it has six faces.

HELP PLEASE

A stadium is charging $45 per ticket for a big concert, and through a special promotion,
there is no service fee. What are the parameters in this scenario?

a. x and f(x)
b. 7 and 45
c. 0 and 45
d. 1 and 52

Answers

Answer:

c

Step-by-step explanation:

Since there's no service fee, Answer c is correct.  Here, 0 represents the zero service fee and 45 represents the $45 cost of each ticket.

Find the maximum value of the function for the polygonal convex set determined by the given system of inequalities (Picture provided)

Answers

Answer:

- The maximum value is 86 occurs at (8 , 7)

Step-by-step explanation:

* Lets remember that a function with 2 variables can written

 f(x , y) = ax + by + c

- We can find a maximum or minimum value that a function has for

 the points in the polygonal convex set

- Solve the inequalities to find the vertex of the polygon

- Use f(x , y) = ax + by + c to find the maximum value

∵ 3x + 4y = 19 ⇒ (1)

∵ -3x + 7y = 25 ⇒ (2)

- Add (1) and (2)

∴ 11y = 44 ⇒ divide both sides by 11

∴ y = 4 ⇒ substitute this value in (1)

∴ 3x + 4(4) = 19

∴ 3x + 16 = 19 ⇒ subtract 16 from both sides

∴ 3x = 3 ⇒ ÷ 3

∴ x = 1

- One vertex is (1 , 4)

∵ 3x + 4y = 19 ⇒ (1)

∵ -6x + 3y = -27 ⇒ (2)

- Multiply (1) by 2

∴ 6x + 8y = 38 ⇒ (3)

- Add (2) and (3)

∴ 11y = 11 ⇒ ÷ 11

∴ y = 1 ⇒ substitute this value in (1)

∴ 3x + 4(1) = 19

∴ 3x + 4 = 19 ⇒ subtract 4 from both sides

∴ 3x = 15 ⇒ ÷ 3

∴ x = 5

- Another vertex is (5 , 1)

∵ -3x + 7y = 25 ⇒ (1)

∵ -6x + 3y = -27 ⇒ (2)

- Multiply (1) by -2

∴ -6x - 14y = -50 ⇒ (3)

- Add (2) and (3)

∴ -11y = -77 ⇒ ÷ -11

∴ y = 7 ⇒ substitute this value in (1)

∴ -3x + 7(7) = 25

∴ -3x + 49 = 25 ⇒ subtract 49 from both sides

∴ -3x = -24 ⇒ ÷ -3

∴ x = 8

- Another vertex is (8 , 7)

* Now lets substitute them in f(x , y) to find the maximum value

∵ f(x , y) = 2x + 10y

∴ f(1 , 4) = 2(1) + 10(4) = 2 + 40 = 42

∴ f(5 , 1) = 2(5) + 10(1) = 10 + 10 = 20

∴ f(8 , 7) = 2(8) + 10(7) = 16 + 70 = 86

- The maximum value is 86 occurs at (8 , 7)

Answer:

B  (5, 1)

Step-by-step explanation:

Assignment 01.11 Estimating
Step 1- Read the passage Who was Leonardo da Vinci?


Who was Leonardo da Vinci?
Leonardo da Vinci trained as a painter during the Renaissance and became a true master of the craft. His amazing powers of observation and skill as an illustrator enabled him to notice and recreate the effects he saw in nature, and added a special liveliness to all of his portraits. Curious as well as observant, he constantly tried to explain what he saw, and described many experiments to test his ideas. Because he wrote down and sketched so many of his observations in his notebooks, we know that he was among the very first to take a scientific approach towards understanding how our world works and how we see it. He had a keen eye and quick mind that led him to make important scientific discoveries, yet he never published his ideas. He was a gentle vegetarian who loved animals and despised war, yet he worked as a military engineer to invent advanced and deadly weapons. He was one of the greatest painters of the Italian Renaissance, yet he left only a handful of completed paintings.

Step 2- In the paragraph above, estimate the number of words by using the following three methods, and answer the the four questions that follow. You must show all work. Even if you have the right answer you will not get full credit without work.

Method 1 - Count the number of words in one sentence
and then multiply that number by the number of sentences in the paragraph.
Method 2 - Count the number of words in one line
and then multiply that number by the number of lines in the paragraph.
Method 3 - Find the number of words in three lines
and then divide by three to find out the average number of words in these lines.
Then multiply this by the number of lines in the paragraph.

Question 1
What is estimate of the total number of words with method 1? What sentence did you use?
Question 2
What is estimate of the total number of words with method 2? What line did you use?
Question 3
What is estimate of the total number of words with method 3?
Question 4
Which estimation method is the closest to the actual number of words?

Answers

Answer:

Q1. 168 words from sixth sentence.

Q2. 171 words from line 3.

Q3. 177 words from the first three sentences.

Q4. Method 3.

Step-by-step explanation:

Question 1.

The paragraph has seven sentences.

I chose the sixth sentence ("gentle vegetarian"). It contains 24 words.

7 sentences × (24 words/1 sentence) = 168 words

Question 2.

The passage contains 19 lines.

I chose line 3 ("amazing powers"). It contains nine words.

19 lines × (9 words/1 line) = 171 words.

Question 3.

I chose the first three lines. They contain 28 words.

Words per line = 28 words/3 lines = 9.33 words per line

Total words = 19 lines × (9.33 words/1 line) = 177 words

Question 4

The passage contains 176 words. Method 3 comes closest to the actual number of words.

La expresión algebraica que indica: «Si al cuadrado de la suma de dos números a y b le restamos la mitad de c y la diferencia resultante la multiplicamos por 5» es:

Answers

The sum of two number a and b is [tex]a+b[/tex]

Its square is [tex](a+b)^2[/tex]

Half of c is [tex]\frac{c}{2}[/tex]

And we have to subtract this from what we got before:

[tex](a+b)^2-\dfrac{c}{2}[/tex]

Finally, we multiply everything by 5:

[tex]5\left[(a+b)^2-\dfrac{c}{2}\right][/tex]

Queremos, a partir de una frase, escribir la correspondiente expresión algebraica.

Obtendremos:

[tex][(a + b)^2 - c/2]*5[/tex]

-----------------------------------

Lo que nos dan es:

"Si al cuadrado de la suma de dos números a y b le restamos la mitad de c y la diferencia resultante la multiplicamos por 5"

Veamos esto en partes, la primera dice:

"Si al cuadrado de la suma de dos números a y b..."

El cuadrado de la suma de dos números a y b se escribe como:

[tex](a + b)^2[/tex]

Ahora tenemos:

"Si al cuadrado de la suma de dos números a y b le restamos la mitad de c ..."

Ahora le restamos la mitad de c a lo que encontramos antes:

[tex](a + b)^2 - c/2[/tex]

Finalmente:

"Si al cuadrado de la suma de dos números a y b le restamos la mitad de c y la diferencia resultante la multiplicamos por 5"

Es decir, debemos multiplicar por 5 a la diferencia (la resta) de arriba:

[tex][(a + b)^2 - c/2]*5[/tex]

Está es la expresión que queriamos encontrar.

Si quieres aprender más, puedes leer:

https://brainly.com/question/24758907

You are given the system of equations to solve by the elimination method, which is an INCORRECT step that will NOT produce a system with the same solution?

3x + 6y = 8
4x + 2y = 10
A) subtract 6 times the second equation from 2 times the first equation
B) add 3 times the first equation and −9 times the second equation
C) multiply the first equation by 1/3
and subtract the second equation
D) multiply 6y by 1/3 in the first equation and subtract the second equation

Answers

D is the correct answer.

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

If a home is valued at $250,000 and the property tax rate is 2 percent, how much will the owners pay in property taxes? $50 $500 $5,000 $50,000

Answers

Answer:

$5,000

Step-by-step explanation:

NOT 100% SURE BUT I THINK ITS LIKE THIS

2% = 0.02 tax in a decimal form

$250,000 price of home

0.02 x 250,000= 5,000

The amount that the owner pay in property taxes is: $5,000.

Owner property taxes:

Using this formula

Property taxes amount=House value×Property tax rate

Where:

House value=$250,000

Property tax rate=2%

Let plug in the formula

Property taxes amount=$250,000×2%

Property taxes amount=$5,000

Inconclusion the amount that the owner pay in property taxes is $5,000.

Learn more about property taxes here:https://brainly.com/question/25844719

polynomials what is the product of
1/2x - 1/4 and 5x^2-2x+6

Answers

Answer:

[tex]\frac{5}{2}x^3-\frac{9}{4}x^2+\frac{7}{2}x-\frac{3}{2}[/tex]

Step-by-step explanation:

Given polynomials are [tex]\frac{1}{2}x-\frac{1}{4}[/tex] and [tex]5x^2-2x+6[/tex].

Now we need to find their product which can be done as follows:

[tex]\left(\frac{1}{2}x-\frac{1}{4}\right)\left(5x^2-2x+6\right)[/tex]

[tex]=5x^2\left(\frac{1}{2}x-\frac{1}{4}\right)-2x\left(\frac{1}{2}x-\frac{1}{4}\right)+6\left(\frac{1}{2}x-\frac{1}{4}\right)[/tex]

[tex]=\frac{5}{2}x^3-\frac{5}{4}x^2-x^2+\frac{1}{2}x+3x-\frac{3}{2}[/tex]

[tex]=\frac{5}{2}x^3-\frac{9}{4}x^2+\frac{7}{2}x-\frac{3}{2}[/tex]

Hence final answer is [tex]\frac{5}{2}x^3-\frac{9}{4}x^2+\frac{7}{2}x-\frac{3}{2}[/tex].

At Saturday night's football game there were 18 less fans than half the fans at Friday night's game. There were "x" fans at Fridays game. Write an expression to represent the number of fans at Saturdays game.

Answers

Answer:

[tex]\boxed{ \frac{ 1}{ 2}x - 18}[/tex]

Step-by-step explanation:

          x = fans at Friday's game

       ½x = half the fans at Friday's game

½x – 18 = 18 fewer than half the fans at Friday's game

[tex]\boxed{ \frac{ 1}{ 2}x - 18}[/tex] = fans at Saturday's game.

Two rigid transformations are used to map ABC to QRS. The first is a translation of vertex B to vertex R. What is the second transformation?




a reflection across the line containing AB




a rotation about point B




a reflection across the line containing CB




a rotation about point C

Answers

Answer:a reflection across the line containing AB

Step-by-step explanation:

The correct option is A).

Step-by-step explanation:

Given :

First Transformation is a translation of vertex B to vertex R.

AB = RQ   (refer the given figure)

Solution :

The second transformation is obviously a reflection across the line containing AB because AB = RQ and there is translation of vertex B to vertex R therefore there is also a translation of vertex A to vertex Q and through observing the given diagram we can say that there is a reflection across the line containing AB.

Hence, the correct option is A).

For more information, refer the link given below

https://brainly.com/question/21454252?referrer=searchResults

Find the domain of y=\sqrt{3x-8}

Answers

Answer:

Step-by-step explanation        

x

{x|x≥8/3}

a carpenter agrees to work under the condition that she is to be paid $55 every day she works and she must pay $66 every day she does not work. at the end of 30 days, she finds she has earned 77$. how many days did she work?

Answers

Answer:

17 days

Step-by-step explanation:

For each day she works, she earns +55 and each day she DOES NOT work she earns -66. Total 30 days.

Let number of days she works be x

thus, number of days she DOES NOT work is 30 - x

We can setup an equation as:

55(x) + -66(30-x) = 77

This means, she works x days for 55 each and 30 - x days getting -66 each, totalling 77.

We can solve for x to find number of days she worked. Work shown below:

[tex]55(x) + -66(30-x) = 77\\55x-66(30)+66x=77\\121x -1980 = 77\\121x = 77+1980\\121x = 2057\\x=\frac{2057}{121}\\x=17[/tex]

Thus, she worked 17 days

Verify the identity

Answers

Answer:

see below

Step-by-step explanation:

sin x                                 1

-------------------              = -----------

sec^2 x - tan ^2 x               csc x

Sec = 1/cos   and tan = sin/cos

sin x                                         1

-------------------                     = -----------

1/ cos ^2 x -sin^2/cos ^2 x       csc x

Factor the denominator

sin x                                         1

-------------------                     = -----------

(1-sin^2 x)/ cos ^2 x                csc x

We know that 1 - sin^2 x = cos ^2

sin x                                         1

-------------------                     = -----------

(cos^2 x)/ cos ^2 x                csc x

sin x                                         1

-------------------                     = -----------

1                                               csc x

Multiply the top and bottom of the left hand side by 1/ sin x

sin x  * 1/ sin x                              1

-------------------                     = -----------

1     * 1 sin x                             csc x

1                                                1

-------------------                     = -----------

       1 sin x                             csc x

We know that 1/sin x = csc

1                              1

---------               = -----------

csc (x)                   csc x

Use a special triangle on the unit circle to determine the value of tan π/6.

Answers

Answer:

  D)  √3/3

Step-by-step explanation:

The coordinates of the point at the angle π/6 are shown as (√3/2, 1/2). The tangent of the angle is the ratio of the y-coordinate to the x-coordinate:

  tan(π/6) = (1/2)/((√3)/2) = 1/√3 = (√3)/3 . . . . matches choice D

My car uses 8 gallons of gasoline to travel 340 miles. After a Mechanic worked on it. The car uses 7 gallons of gasoline to travel 350 miles. The cost of the gasoline was $4 each per gallon. How much less, to the nearest cent per mile after the mechanic worked on it

Answers

But in cost

(50×4)-(42.5×4)

Rs30

The volume of a small packing box is "3x^2 + 3x" in^3 smaller than a large packing box with a volume of "5x^2 − 2x + 10" in^3. Find a single expression that represents the size of a small packing box.

A) 2x2 − 2x + 10

B) 2x2 − 5x + 10

C) 8x2 − 5x + 10

D) 8x2 + x + 10

Answers

I honestly need help on this to

Step-by-step explanation:

b

Identify the solid.

A.

pentagonal prism

B.

dodecahedron

C.

hexahedron

D.

hexagonal prism

Answers

Answer:

hexagonal prism

Step-by-step explanation:

This solid is a hexagonal figure because the shape of its base is a hexgaon.

Answer:

The answer is hexagonal prism.

Hope this helps.☻♥

In a​ triangle, the measure of the first angle is three times the measure of the second angle. The measure of the third angle is 70 degrees more than the measure of the second angle. Use the fact that the sum of the measures of the three angles of a triangle is 180 degrees to find the measure of each angle.

The measure of the first angle is _____

Answers

Answer:

66

Step-by-step explanation:

x is the second angle

3x is the first angle

x+70 is the third angle

x+3x+x+70=180

5x = 110

x= 22

first angle: 3x = 3*22 = 66

Answer:

Second angle: 22°

And the other angles are:

First angle: 66°

Third angle: 92°

Step-by-step explanation:

Let be:

[tex]x[/tex] the measure of the second angle.

[tex]3x[/tex] the measure of the first angle.

[tex](x+70)[/tex]: the measure of the third angle.

Then, knowing that the sum of the interior angles of a triangle is 180 degrees, you can write this expression and solve for "x",to calculate the measure of the second angle:

[tex]x+3x+(x+70)=180\\5x+70=180\\5x=180-70\\\\x=\frac{110}{5}\\\\x=22\°[/tex]

You can also know that:

First angle:

[tex]3x=2(22\°)=66\°[/tex]

Third angle:

[tex]x+70\°=22\°+70\°=92\°[/tex]

A machine is set up to cut metal strips of varying lengths and widths based on the time (t) in minutes. The change in length is given by the function `l(t) = t^2 - sqrt(t)`, and the change in width is given by `w(t) = t^2 - 2t^(1/2)`. Which function gives the change in area of the metal strips? A. `a(t) = t^4 + 2t` B. `a(t) = t^4 + 2t + 3t^(5/2)` C. `a(t) = t^4 - 3t^(5/2) + 2t` D. `a(t) = t^4 + 2t - 2t^(1/2) + sqrt(t)`

Answers

Answer:

The change of area A(t) = t^4 - 3t^(5/2) + 2t ⇒ answer C

Step-by-step explanation:

* Lets study the problem

- The metal strip is in a shape of rectangle

- The change in length l(t) = t² - √t

- The change is the width w(t) = t² - 2t^1/2

* We must find function gives the change of area

∵ The area of the rectangle = length × width

∴ The change of rate of area A(t) = l(t) × w(t)

- We can write the √t in exponential form t^1/2

∴ l(t) = t² - t^1/2

∵ w(t) = t² - 2t^1/2

∵ A = l × w

∴ A(t) = l(t) × w(t)

∴ [tex]A(t)=(t^{2}-t^{\frac{1}{2}})(t^{2}-2t^{\frac{1}{2}})[/tex]⇒use the foil method

∴ [tex]A(t)=(t^{2})(t^{2})+(t^{2})(-2t^{\frac{1}{2}})+(-t^{\frac{1}{2}})(t^{2})+(-t^{\frac{1}{2}})(-2t^{\frac{1}{2}})[/tex]

- If we multiply two same numbers have exponents, then we add

 the power of them

∴ [tex]A(t)=(t^{2+2})-2t^{2+\frac{1}{2}}-t^{\frac{1}{2}+2}+2t^{\frac{1}{2}+\frac{1}{2}}[/tex]

∴ [tex]A(t)=t^{4}-2t^{\frac{5}{2}}-t^{\frac{5}{2}}+2t[/tex]

* Now lets add the like terms

∴ [tex]A(t)=t^{4}-3t^{\frac{5}{2}}+2t[/tex]

* The change of area A(t) = t^4 - 3t^(5/2) + 2t

Answer:

the answer is C

Step-by-step explanation:

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