from the graph; calculate: E=

Answer:

x=56

Step-by-step explanation:

There are 3 angles in the triangle

x, 60 and the unknown angle we will call y

y  and 2x+4 make a straight line, so that adds to 180

y + 2x+4 = 180

Solve for y

y = 180 - (2x+4)

y = 180 -2x-4

y = 176 -2x

The three angles in a triangle add to 180

x + 60 + y = 180

Substitute in for y

x + 60 + 176 -2x = 180

Combine like terms

-x +236 = 180

Subtract 236 from each side

-x+236-236 = 180-236

-x = -56

Multiply by -1

x = 56

Answer:

B

Step-by-step explanation:

Answer:

Step-by-step explanation:

If a polynomial function P(x) with rational coefficients has a root z. the so is the complex conjugate of z is a root. (In order to see that, take the complex conjugates of the equation P(x)=0, and note that complex conjugates of rational numbers equal to itself.)

Therefore the complex conjugates of the given roots i and 7+8i , are -i and 7-8i is the required answer.

For each birdhouse built, the total cost increases by $3.50.

The number 3.5 multiplies b, so when b increases by 1, f(b) increases by 3.5. Making 1 more birdhouse increases the total cost by $3.50.

Answer: For each birdhouse built, the total cost increases by $3.50.

Step-by-step explanation:

Given: The total cost for Sophia to build b birdhouses is represented by the function [tex]f(b)=3.5b+24[/tex]

We can see in the function 3.5 is multiplied to b, so when b increases , f(b) increases by 3.5.

[tex]f(1)=3.5(1)+24=3.5+24=27.5[/tex]

[tex]f(2)=3.5(2)+24=7+24=31[/tex]

[tex]f(3)=3.5(3)+24=10.5+24=34.5[/tex]

and [tex]f(2)-f(1)=f(3)-f(2)=3.5[/tex]

Therefore, the value of 3.5 represents that for each birdhouse built, the total cost increases by $3.50.

Answer:

A is the answer or (6 1/2, 8 1/2)  or (13/2, 17/2) or (6.5,8.5)

Step-by-step explanation:

Given : A line segment AB with

[tex]A= (x_1,y_1)=(4,8)[/tex] and [tex]B= (x_2,y_2)=(14,10)[/tex]

let C partitioned the line AB by 1:3  let m:n = 1:3

shown in the figure attached

Formula used:

[tex]C= (\frac{n x_1 + m x_2 }{m+n},\frac{n y_1+ m y_2 }{m+n})[/tex]

putting value in formula we get,

[tex]C= (\frac{(4) (3)+ (14)(1) }{1+3},\frac{(8)(3)+ (10)(1)}{1+3})[/tex]

[tex]C= (\frac{(13 }{2},\frac{17}{2})[/tex]

[tex]C= (6.5 ,8.5)[/tex]

[tex]C= ( 6 1/2,8 1/2)[/tex]

therefore, A is the answer

Answer:

∠MSR is right angle

Step-by-step explanation:

It is given that RHOM is a Rhombus

Also ΔHOM, ΔMHR, ΔRHO and ΔOMR are isosceles triangles

Let us take ΔMSR and ΔRSH

∠MRS =∠HRS            ( since it is given that the diagonal RO bisects ∠R)

∠RMS =∠RHS     ( since Δ MRH is isosceles triangle )

RS = RS        ( common side )

By AAS congruency rule ΔMSR ≅ ΔHSR

so we have

∠MSR=∠RSH  ( corresponding parts of congruent triangles are congruent)

also we have

∠MSR +∠RSH =180°   ( supplementary angles)

∠MSR +∠MSR=180°          ( since ∠MSR=∠RSH)

2∠MSR= 180°

∠MSR =90°

Hence ∠MSR is right angle

Answer:

It must be a right angle.

Step-by-step explanation:

The figure attached shows the rhombus RHOM with RO and HM as diagonals and are the angle bisectors of the vertex angles.

Let S be the point where the diagonals RO and HM intersects each other.

ΔHOM, ΔMHR, ΔRHO, ΔOMR are four isosceles triangles in the given rhombus.

Since, Diagonals of a rhombus bisect each other at right angle.

Therefore, we have ∠MSR= 90°

That is, ∠MSR is a right angle.

Answer: 45

Step-by-step explanation:

Divide 90 by 2 and you will the the answer of 45.

Answer:

0.009

Step-by-step explanation:

So 9/1000 can be written as 0.009

Answer:

The answer is 0.009.

Step-by-step explanation:

The total number of people from which only 9 earned a perfect score = 1,000.

The number of people who earned a perfect score = 9

The decimal that represents the number of people who earned a perfect score = The number of people who earned a perfect score ÷ The total number of people concerned = 9 ÷ 1,000 = 0.009.

The first step is correct, because you changed the order of two terms in an addition, and the property [tex] a+b=b+a [/tex] is indeed called commutative property of addition.

In the second step, you do the same, but with multiplication: you use [tex] (6x)\cdot y = y \cdot (6x) [/tex]. This means that you're using the commutative property again, except for multiplication. So, the answer should be "commutative property of multiplication.

Finally, the third step is correct, because you're distributing the multiplication by 3 to both terms in the parenthesis, and this is called distributive property: it states that

[tex] a(b+c)=ab+ac [/tex]

C. AB ║ DC

The congruence of the two triangles means ∠ABD≅∠CDB. These, then, are alternate interior angles on either side of transversal BD between lines AB and DC. If alternate interior angles are congruent, the lines are parallel:

... AB ║ DC

_____

Congruence of the triangles does not require ∠B to be bisected or that it be 90°.

All the three sides of the given triangles are equal to the sides of another triangle then, [tex]\rm \overline{AB}=\overline{DC}[/tex]. Therefore the correct option is C).

Given :

Triangle ABD is congruent to the triangle CBD.

A triangle has three sides and the sum of all the interior angles are equal to [tex]180^\circ[/tex].

If the triangle ABD is congruent to the triangle CBD then:

AB = DC

AD = BC

BD = BD

If all the three sides of the given triangles are equal to the sides of another triangle then, [tex]\rm \overline{AB}=\overline{DC}[/tex]. Therefore the correct option is C).

For more information, refer to the link given below:

https://brainly.com/question/19325053

Answer:

C, D, F are correct.

Step-by-step explanation:

If we look at the equation:

[tex]P(t)=16.8(0.94)^t[/tex]

Is molded after this equation:

[tex]Population_{final}=Population_{initial}(1+r)^t[/tex]

Where 1 represents 100%, r is the rate in decimals and t is time.

So this means that the initial population is 16.8 thousand or in other words 16,800 people.  The rate is 1-r, so the rate that the population is decreasing is 0.06 i.e. 6% (because 1-0.06=0.94).

Answer:

16.0

Step-by-step explanation:

The mnemonic SOH CAH TOA reminds you ...

... Tan = Opposite/Adjacent

... tan(32°) = 10/AC

Multiplying by AC and dividing by the tangent gives you ...

... 10/tan(32°) = AC = 16.0

Answer:  The required length of AC is 16.1 units.

Step-by-step explanation:  We are given to find the length of side AC of triangle ABC.

From the figure, we note that

the triangle ABC is a right-angled triangle, where

m∠C = 90°, m∠A = 32° and BC = 10 units.

For the acute angle A, side AC is the base and side BC is the perpendicular.

So, from trigonometric ratios, we have

[tex]\tan m\angle A=\dfrac{perpendicular}{base}\\\\\\\Rightarrow \tan32^\circ=\dfrac{BC}{AC}\\\\\\\Rightarrow \tan32^\circ=\dfrac{10}{AC}\\\\\\\Rightarrow 0.62=\dfrac{10}{AC}\\\\\\\Rightarrow AC=\dfrac{10}{0.62}\\\\\Rightarrow AC=16.13.[/tex]

Rounding to nearest tenth, we get

AC = 16.1 units.

Thus, the required length of AC is 16.1 units.

C. 4(x-3)-x

All of the given expressions are equivalent to 3x+12 except selection C. Using that in your equation makes it be ...

... 3(x +1) +9 = 4(x -3) -x

... 3x +12 = 3x -12

... 12 = -12 . . . . . false

There is no value of x that will make this true, hence NO SOLUTION.

_____

Comment on the other choices

3x+12 = 3x+12 has an infinite number of solutions, as any value of x will make this true.

c

BECAUSE I SAID SO HUH YOU GOTTA PROBLEMO??

Answer:

2/3

Step-by-step explanation:

2 • 9 = 18

3 • 9 = 27

2/3 is equal to 18/27. All you have to do is multiply 9 to the numerator and the denominator for proof.

Hope this helps :)

To find speed, divide total distance by total time:

Speed = 19.2 / 3 = 6.4 kilometers per hour

Answer:

I have different options

Step-by-step explanation:

Im not sure because I dont have (l)(w)(h)

Answer:

The coefficient is 9

Step-by-step explanation:

(a)(b)(c)+(a)(2c)(2a)+(2b)(b)(c)+(2b)(2c)(2a)

abc+4ca^2+2cb^2+8abc

9abc+4ca^2+2cb^2

The actual value of sin(π/3) is (√3)/2 ≈ 0.86602540.

If the sine function is approximated by y=x (no error at x = 0), then the error at x=π/3 is ...

... x -sin(x) @ x=π/3

... π/3 -(√3)/2 ≈ 0.18117215 ≈ 0.1812

You know right away this is a bad approximation, because the approximate value is π/3 ≈ 1.04719755, a value greater than 1. The range of the sine function is [-1, 1] so there will be no values greater than 1.

___

If the sine function is approximated by y=(x+1-π/4)/√2 (no error at x=π/4), then the error at x=π/3 is ...

... (x+1-π/4)/√2 -sin(x) @ x=π/3

... (π/12 +1)/√2 -(√3)/2 ≈ 0.026201500 ≈ 0.02620

Therefore, the error due to linear interpolation to estimate the value of [tex]\( \sin\left(\frac{\pi}{3}\right) \)[/tex] is approximately [tex]\( 29.59 \% \).[/tex]

To estimate the error due to linear interpolation for [tex]\( \sin(x) \)[/tex] at [tex]\( x = \frac{\pi}{3} \)[/tex], we need to compare the actual value of [tex]\( \sin\left(\frac{\pi}{3}\right) \)[/tex] with the value obtained through linear interpolation.

The actual value of [tex]\( \sin\left(\frac{\pi}{3}\right) \)[/tex] is [tex]\( \frac{\sqrt{3}}{2} \)[/tex], which is approximately [tex]\( 0.8660 \)[/tex] .

For linear interpolation, we typically use two nearby points to estimate the value of a function at an intermediate point. Let's consider the points [tex]\( (\frac{\pi}{4}, \sin(\frac{\pi}{4})) \) and \( (\frac{\pi}{2}, \sin(\frac{\pi}{2})) \)[/tex], which are [tex]\( \left(\frac{\pi}{4}, \frac{\sqrt{2}}{2}\right) \) and \( \left(\frac{\pi}{2}, 1\right) \)[/tex], respectively.

Now, we'll use linear interpolation to estimate [tex]\( \sin\left(\frac{\pi}{3}\right) \):[/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \sin\left(\frac{\pi}{4}\right) + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{\sin\left(\frac{\pi}{2}\right) - \sin\left(\frac{\pi}{4}\right)}{\frac{\pi}{2} - \frac{\pi}{4}} \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \frac{\sqrt{2}}{2} + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{1 - \frac{\sqrt{2}}{2}}{\frac{\pi}{2} - \frac{\pi}{4}} \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \frac{\sqrt{2}}{2} + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{1 - \frac{\sqrt{2}}{2}}{\frac{\pi}{4}} \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \frac{\sqrt{2}}{2} + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{1 - \frac{\sqrt{2}}{2}}{\frac{\pi}{4}} \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx \frac{\sqrt{2}}{2} + \left(\frac{\pi}{3} - \frac{\pi}{4}\right) \cdot \frac{1 - \frac{\sqrt{2}}{2}}{\frac{\pi}{4}} \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.7071 + \left(\frac{\pi}{3} - 0.7854\right) \cdot \frac{1 - 0.7071}{0.7854} \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.7071 + (0.5236 - 0.7854) \cdot \frac{0.2929}{0.7854} \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.7071 + (-0.2618) \cdot 0.3732 \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.7071 - 0.0977 \][/tex]

[tex]\[ \sin\left(\frac{\pi}{3}\right) \approx 0.6094 \][/tex]

Now, we can find the error:

[tex]\[ \text{Error} = \left| \frac{\text{Actual value} - \text{Interpolated value}}{\text{Actual value}} \right| \times 100 \% \][/tex]

[tex]\[ \text{Error} = \left| \frac{0.8660 - 0.6094}{0.8660} \right| \times 100 \% \][/tex]

[tex]\[ \text{Error} = \left| \frac{0.2566}{0.8660} \right| \times 100 \% \][/tex]

[tex]\[ \text{Error} = 0.2959 \times 100 \% \][/tex]

[tex]\[ \text{Error} = 29.59 \% \][/tex]

Answer:

The Answer is 48 miles.

Step-by-step explanation:

Linda has driven 36 miles home and that is 3/4 of the way home.  If you divide 36 by 3 equals 12 miles per 1/4 drive.  Multiply 12x4 and the answer is 48.

Hope that helps!

Answer:

z-score for 900 points = -4

Step-by-step explanation:

To find the z scores

z=(x-mean)/standard deviation

so

z=(900-1500)/150

z= -600/150

Answer:

This may help you I think so

Answer:

Correct choice is D

Step-by-step explanation:

Consider the exponential function [tex]R=10.5\cdot (0.535)^t.[/tex]

The exponential function of exponential decay can be written as

[tex]y=a\cdot (1-r)^x,[/tex]

where r is the decay rate.

Note that 1-0.535=0.465. The decimal 0.465 is 46.5% and this percent represents the rate of exponential decay.

Answer:

dont try B its wrong on edge :(

Step-by-step explanation:

i just took the text

Answer:

D U E = { 6,8,9,10,11}

Step-by-step explanation:

U stands for union, which is join the sets together

D U E = { 6,8,9,10,11}

tan(Q) = RS/RQ

The mnemonic SOH CAH TOA reminds you that ...

... Tan = Opposite/Adjacent

The side opposite angle Q is RS. The side adjacent is RQ. (QS is the hypotenuse, which does not come into play in the tangent function.)

Then ...

... tan(Q) = Opposite/Adjacent = RS/RQ

In right triangle QRS, with angle R being 90 degrees, tan Q is represented by the length of the side opposite to angle Q divided by the length of the side adjacent to Q which tan Q = SR/ QR.

In right triangle QRS, with angle R being 90 degrees, the ratio that represents tan Q is the length of the opposite side to angle Q divided by the length of the adjacent side.

In trigonometry, the tangent (tan) of an angle in a right triangle is a ratio of the length of the side opposite to the angle to the length of the side adjacent to the angle.

Therefore, if we label the sides opposite and adjacent to angle Q as opposite and adjacent respectively, the formula for tan Q would be:

tan Q = opposite/adjacent

         = SR/QR

For example, if a right triangle has sides of lengths 3, 4, and 5, with the side lengths of 3 and 4 being adjacent to and opposite angle Q respectively, the tan Q would be calculated as 4/3.

Find the x and y for each dot:

5,35

10,70

15,105

etc.

Divide the Y by the X:

35 / 5 = 7

70 / 10 = 7

etc.

The answer would be C) y = 7x

Answer:

Option C is correct

[tex]y = 7x[/tex]

Step-by-step explanation:

Direct variation states that:

[tex]y \propto x[/tex]          ......[1]

then, the equation is in the form of:

[tex]y=kx[/tex], where k is the constant of variation

From the given graph we have points in the form of (x, y) i.e,

(0, 0), (5, 35), (10, 70), (15, 105), (20, 140), (25, 175) and (30, 210)

Substitute any points i.e (5, 35) in [1] we have;

[tex]35 = 5k[/tex]

Divide both sides by 5 we have;

7 = k

or

k = 7

then;

[tex]y = 7x[/tex]

Therefore, the constant of  proportionality for the graph is, 7 and its form is, [tex]y = 7x[/tex]

Answer:

8763

Step-by-step explanation:

Let x represent the number of students the college had last year. Then this year's enrollment is ...

... x - 3%·x = 8500

... x(1 - 0.03) = 8500 . . . . . collect terms

... x = 8500/0.97 ≈ 8762.89 . . . . divide by the coefficient of x

Enrollment last year was about 8763.

_____

Of course, you know 3% = 3/100 = 0.03.

Answer:

Step-by-step explanation:

The midsegment of a triangle is half the length of the side it is parallel to.

1. For a distance of 6.08 m between wall plates, the colar tie will be half that, or 3.04 m.

2. The perimeter of ΔXYZ is ...

... 10 + 12 + 14 = 36

The sides of ΔABC are half the length of the sides of ΔXYZ, so the perimeter of ΔABC is half the perimeter of ΔXYZ.

... perimeter of ΔABC = 36/2 = 18

Answer:

g + h =  -4

g - h =  -10

h -g = 10

gh =  -21

g+ h^2 =  2

g^2 -h =  46

Step-by-step explanation:

We know g = -7 and h = 3

g + h = -7 +3 = -4

g - h = -7 - 3 = -10

h -g = 3 --7 = 3+7 = 10

gh = (-7) * 3 = -21

g+ h^2 = -7 + (3)^2 = -7+9 = 2

g^2 -h = (-7)^2 -3 = 49 -3 = 46

102°

Opposite angles of an inscribed quadrilateral are supplementary.

∠Q = 180° -∠A = 180° -78°

∠Q = 102°

Answer:

The sum is rational.

Step-by-step explanation:

-3/8 is a rational number  (the ratio of 2 integers)

3/5 is a rational number  (the ratio of 2 integers)

When you add 2 rational numbers, you get a rational number.

Answer:

see attached plot for  y ≥ |x - 1|

Step-by-step explanation:

Answer:

Graph below. x=1.

Step-by-step explanation:

1) Check the graph below. Take a closer look at the green area. This great Triangle intercepts the y-axis at the point (0,1) since it's an absolute value.

2) Algebraically, turning this function into an equation, since modulus

|x|=0, x=0.

[tex]y\geq |x-1|\\ |x-1|\geq 0\\ x-1\geq 0\\ x-1+1\geq 0+1\\ x\geq 1[/tex]

It's a quadratic function.

[tex]f(x)=ax^2+bx+c[/tex]

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

[tex]f(x)=3x^2-8[/tex]

a = 3, b = 0, c = -8

a = 3 > 0, therefore the parabola open up.

The range of this function is [k, ∞).

k - second coordinate of the vertex (h, k)

[tex]h=\dfrac{-b}{2a},\ k=f(h)[/tex]

Substitute:

[tex]h=\dfrac{-0}{2(3)}=0\\\\k=f(0)=3(0^2)-8=0-8=-8[/tex]

Answer: The range is [tex][8,\ \infty)[/tex]

To find the range of the function ƒ(x) = 3x^2 - 8, we need to determine the set of all possible output values. The range of the function is all real numbers greater than or equal to the y-coordinate of the vertex, which is -8. Therefore, the range of the function ƒ(x) = 3x^2 - 8 is y ≤ -8.

To find the range of the function ƒ(x) = 3x2 − 8, we need to determine the set of all possible output values. Since the function is a quadratic function, its graph is a parabola. The range can be found by considering the vertex of the parabola and the direction it opens.

The vertex of the parabola is given by the formula x = -b/(2a), where a and b are the coefficients of the quadratic function. In this case, a = 3 and b = 0. So, the x-coordinate of the vertex is x = -0/(2*3) = 0.

Since the parabola opens upward (the coefficient of x2 is positive), the vertex represents the minimum value of the function. Therefore, the range of the function is all real numbers greater than or equal to the y-coordinate of the vertex. Plugging the x-coordinate (0) into the function gives us ƒ(0) = 3*(0)2 − 8 = -8. So, the range of the function ƒ(x) = 3x2 − 8 is y ≤ -8.

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