10. Calculate 18% of 75 to one decimal place.

Tony is correct.

Step-by-step explanation:

Given polynomial is;

[tex]x^2+13x+36=0[/tex]

Tony's answer is x = -9

We will put x = -9 in given polynomial.

[tex](-9)^2+13(-9)+36=0\\81-117+36=0\\0 = 0[/tex]

Tony's solution satisfies the equation.

Erika's answer is x = 4

We will put x = 4 in given polynomial.

[tex](4)^2+13(4)+36=0\\16+52+36=0\\104\neq 0[/tex]

Erika's solution does not satisfy the equation, therefore

Tony is correct.

Keywords: polynomial, roots

Learn more about polynomials at:

#LearnwithBrainly

Answer:

112.5

Step-by-step explanation:

112.5 ÷ 450 =

0.25 =

0.25 × 100/100 =

0.25 × 100% =

(0.25 × 100)% =

25%

or

25% × 450 =

(25 ÷ 100) × 450 =

(25 × 450) ÷ 100 =

11,250 ÷ 100 =

112.5

Answer:

112.5

Step-by-step explanation:

First you would divide 450÷100=4.5. Then you would multiply 4.5×25=112.5.

this would give you 25% of 450

400÷100=4.5

4.5×25=112.5

Answer:

c. ( 5, 3)

Step-by-step explanation:

6x-27=4x-17

6x-27-4x=4x-17-4x

2x-27=-17

2x-27+27=-17+27

2x=10

x=10/2

x=5

y=6(5)-27

y=30-27

y=3

The equations used to find the length of leg of triangle are:

[tex]0.5x(x+2) = 24\\\\x^2+2x-48=0\\\\x^2+(x+2)^2 = 100[/tex]

Solution:

From given,

Area of right triangle = 24 square feet

Also from given figure in question (attached below )

base = x and height = x + 2

The area of triangle is given by formula:

[tex]Area = \frac{1}{2} \times base \times height[/tex]

Substituting the values we get,

[tex]24 = \frac{1}{2} \times x \times (x+2)\\\\24 = 0.5x(x + 2)\\\\48 = x(x+2)\\\\x^2 + 2x - 48 = 0\\\\[/tex]

Also, the above equation can be written as,

[tex]x^2 + (x+2)^2 =100[/tex]

Thus the equations used to find the length of leg of triangle are:

[tex]0.5x(x+2) = 24\\\\x^2+2x-48=0\\\\x^2+(x+2)^2 = 100[/tex]

Answer:

A, D, E

Step-by-step explanation:

From the answer above, but the letters to make it easier :)

Answer:

b

Step-by-step explanation:

you can break the 78 into 70 and 8, and multiply them separately by 6 and then add the two answers to get 468

Answer:

B

Step-by-step explanation:

literally the only equivalent equation

Answer:96

Step-by-step explanation:

Answer:

-5/6

Step-by-step explanation:

3(1/6+2/9)+(-2)

1/6+2/9= 7/18

3*7/18 = 21/18 = 1 1/6

1 1/6 - 2 = -5/6

Answer:

1. B. x = 11

2. E. [tex]m\angle BEF=140^{\circ}[/tex]

3. D. 4.3 in

4. D. 40.8 ft

Step-by-step explanation:

1. By Angle Addition Postulate,

[tex]m\angle KLM=m\angle KLV+m\angle VLM[/tex]

Since

[tex]m\angle KLV=34^{\circ}\\ \\m\angle KLM=14x+19\\ \\m\angle VLM=12x+7,[/tex]

then

[tex]14x+19=34+12x+7\\ \\14x-12x=34+7-19\\ \\2x=22\\ \\x=11[/tex]

2. By Angle Addition Postulate,

[tex]m\angle FED=m\angle DEB+m\angle BEF[/tex]

Since

[tex]m\angle FED=14x+8\\ \\m\angle DEB=22^{\circ}\\ \\m\angle BEF=13x-3,[/tex]

then

[tex]14x+8=22+13x-3\\ \\14x-13x=22-3-8\\ \\x=11[/tex]

Therefore,

[tex]m\angle BEF=(13\cdot 11-3)^{\circ}=(143-3)^{\circ}=140^{\circ}[/tex]

3. The area of trapezoid is

[tex]A_{trapezoid}=\text{Midsegment}\times \text{Height}[/tex]

From the diagram,

[tex]\text{Smaller base}=1.2\ in\\ \\\text{Bigger base}=4.2\ in,[/tex]

then

[tex]\text{Midsegment}=\dfrac{1.2+4.2}{2}=2.7\ in[/tex]

Since the area of trapezoid is [tex]11.6\ in^2,[/tex] then

[tex]11.6\ in^2 =2.7\ in\times \text{Height}\\ \\\text{Height}=\dfrac{11.6\ in^2}{2.7\ in}\approx 4.3\ in[/tex]

4. Use formula for the area of the circle to find the radius of the circle:

[tex]A_{circle}=\pi r^2[/tex]

So,

[tex]132.7=\pi r^2\\ \\r^2=\dfrac{132.7}{\pi}\\ \\r=\sqrt{\dfrac{132.7}{\pi}}\ ft[/tex]

Now, find the circumference of the circle:

[tex]C=2\pi r\\ \\C=2\pi \cdot \sqrt{\dfrac{132.7}{\pi}}=2\sqrt{132.7\pi}\approx 40.8\ ft[/tex]

Answer:

cj sjx soiebxidhevdi hi

Answer: hi

Step-by-step explanation:

Lol

Answer:

J =2m -3

Step-by-step explanation:

2m is twice Monica's age

-3 represents 3 years younger

Answer:

x=4.16

Step-by-step explanation:

12x -18 +4 = 16+18

12x-16= 16+18

12x-16=34

      +16 +16

12x=50

50/12

4.16

Answer:

A.)

Step-by-step explanation:

It has the best graph that matches the table

The Y-axis is the number of students who got that grade

The X-axis is the number grade

Answer:

x= 14√3

y= 28√3

Step-by-step explanation:

Please see attached picture for full solution.

(tan30° and cos30° are special angles so there's an exact value to it in which we can memorise.)

In this case, by Pythagoras's Theorem, you should ensure that:

[tex] {y}^{2} = 42^{2} + {x}^{2} [/tex]

✓ Let's check:

[tex]{y}^{2} = (28 \sqrt{3} )^{2} \\ y^{2} = 2352 \\ {x}^{2} + {42}^{2} = ( 14\sqrt{3})^{2} + 1764 = 2352[/tex]

This satisfies Pythagoras' Theorem :)

For this kind of questions, first label the adjacent side, opposite side and the hypotenuse side of the triangle.

Cosine angle= adjacent/ hypotenuse

Sine angle= opposite/ hypotenuse

tangent angle= opposite/ adjacent

Then substitute the known side and angle to find the unknown side.

Answer:

The answer is (t4)-7

Step-by-step explanation:

First you simplify the like terms so t add the 2s together and you get t4 then add the negative numbers and it equals -7.

Answer:(t4)-7

Step-by-step explanation:

Final answer:

To find the value of x, set the expressions equal to each other and solve for x.

Explanation:

To find the value of x in the given equation, we need to set the two expressions equal to each other and solve for x. So, we have:

19x - 36 = 6x + 31

Subtracting 6x from both sides, we get:

13x - 36 = 31

Adding 36 to both sides, we get:

13x = 67

Dividing both sides by 13, we get:

x = 67/13

So the value of x is approximately 5.15.

Answer:

165 people

Step-by-step explanation:

If there are 105 woman then there are going to be 60 men because 105/7=14, so you multiply 4*15 and get 60. 60 + 105= 165. So the total employees will be 165.

The total number of employees is the sum of men and women, which is 105 (women) + 60 (men) = 165 employees.

To find the total number of employees, calculate the number of men from the given ratio 4:7 and the number of women (105), and then add the number of men to the number of women to get the total.

The question is about finding the total number of employees in a company given the ratio of men to women and the number of women.

Let's use the provided ratio of men to women, which is 4 to 7, to calculate the number of men.

Since there are 105 women, and the ratio dictates that for every 7 women there are 4 men, we divide 105 by 7 to find the number of units that represent women, which is 15.

We then multiply this by 4 (the number of men) to find the number of men, which is 60.

105 + 60 = 165

Answer:

The only correct statement is ii) In Grade 8,  17% of the students liked

running.

Step-by-step explanation:

Favorite Sports

                    Swimming        Running      Volleyball      Total

Grade 8            0.24                0.17             0.05               0.46

Grade 9            0.18                 0.14             0.22               0.54

Total                  0.42                0.31            0.27                 1

i.) In Grade 8 14 students liked swimming.

   This cannot be said with accuracy as the total number of students is not

   known.

ii) In Grade 8,  17% of the students liked running.

   This statement is TRUE.

iii)  In Grade 9, 31% of students liked volleyball.

    This statement is NOT TRUE.  In Grade 9,  22% of the students liked

     volleyball.

iv)  In Grade 9, 22 students liked volleyball.  

    This cannot be said with accuracy as the total number of students is not

   known.

  The only correct statement is ii) In Grade 8,  17% of the students liked

  running.

Answer:

In Grade 8,  17% of the students liked running.

Answer:

Its 111ft. tall if thats what your asking.

Step-by-step explanation:

100+11=111

The answer is: [tex]83.66^\circ[/tex]. The angle of elevation that the ladder makes with the ground is approximately [tex]\( 83.66^\circ \)[/tex].

To solve the problem, we need to find the angle of elevation that the ladder makes with the ground when it is resting on top of the hook and ladder truck. We are given that the ladder is 100 feet long and its base is 11 feet from the ground.

We can use trigonometry to solve for the angle of elevation (θ). The tangent of the angle of elevation is the ratio of the opposite side (height from the ground to the top of the ladder) to the adjacent side (the distance from the base of the ladder to the point on the ground directly below the top of the ladder).

Let's denote:

- The length of the ladder as [tex]\( L \)[/tex], which is 100 feet.

- The distance from the base of the ladder to the point on the ground directly below the top of the ladder as [tex]\( d \)[/tex], which is 11 feet.

- The height from the ground to the top of the ladder as [tex]\( h \)[/tex].

Using the Pythagorean theorem, we can find [tex]\( h \)[/tex]:

[tex]\[ h^2 + d^2 = L^2 \][/tex]

[tex]\[ h^2 + 11^2 = 100^2 \][/tex]

[tex]\[ h^2 = 100^2 - 11^2 \][/tex]

[tex]\[ h^2 = 10000 - 121 \][/tex]

[tex]\[ h^2 = 9879 \][/tex]

[tex]\[ h = \sqrt{9879} \][/tex]

[tex]\[ h \approx 99.39 \text{ feet} \][/tex]

Now, we can find the angle of elevation using the tangent function:

[tex]\[ \tan(\theta) = \frac{h}{d} \][/tex]

[tex]\[ \theta = \arctan\left(\frac{h}{d}\right) \][/tex]

[tex]\[ \theta = \arctan\left(\frac{99.39}{11}\right) \][/tex]

[tex]\[ \theta \approx \arctan(9.03545455) \][/tex]

[tex]\[ \theta \approx 83.66^\circ \][/tex]

Therefore, the angle of elevation that the ladder makes with the ground is approximately [tex]\( 83.66^\circ \)[/tex].

The final answer is:

[tex]\[ \boxed{83.66^\circ} \][/tex]

The complete question is:

A 100 ft ladder rests on top of a hook and ladder truck with its base 11 feet from the ground. When the angle of elevation of the ladder is 81°, how high up the building will the ladder reach?

Step-by-step explanation:

We have,

[tex]-16(0.47)^2[/tex]

To find, the value of [tex]-16(0.47)^2[/tex] = ?

∴ [tex]-16(0.47)^2[/tex]

= [tex]-16(\dfrac{47}{100} )^2[/tex]

= [tex]-16\times \dfrac{47}{100}\times \dfrac{47}{100}[/tex]

= [tex]-4\times \dfrac{47}{25}\times \dfrac{47}{100}[/tex]

= [tex]- \dfrac{47}{25}\times \dfrac{47}{25}[/tex]

=[tex]- \dfrac{2209}{625}[/tex]

= - 3.5344

∴ The value of [tex]-16(0.47)^2[/tex] = - 3.5344

Thus, the value of [tex]-16(0.47)^2[/tex] is equal to - 3.5344.

Answer:

There will be 8 columns

Step-by-step explanation:

So first you get 48 and divide it by 6 then you get 8 as your answer

Final answer:

To determine the number of columns in a 48-bead array with 6 rows, divide the total beads by the number of rows, which results in 8 columns.

Explanation:

The student has arranged 48 beads into an array with 6 rows. To find out how many columns there are, we divide the total number of beads by the number of rows. Therefore:

Divide 48 by 6.

48 ÷ 6 equals 8.

Thus, there are 8 columns of beads.

Each row has the same number of beads, so with 6 rows and 8 columns, we can visualize the array as a rectangle where every row contains 8 beads.

Final answer:

The slope of the line passing through the points (10,4) and (-2, 17) is calculated using the slope formula and is approximately -1.08.

Explanation:

To find the slope for the line passing through the two points (10,4) and (-2, 17), we use the slope formula which is (change in y)/(change in x) or (y2 - y1) / (x2 - x1). Applying this formula to our points:

m = (17 - 4) / (-2 - 10)

m = 13 / -12

m = -1.0833...

So, the slope of the line that passes through the points (10,4) and (-2, 17) is approximately -1.08.

Answer:

6 cups

Step-by-step explanation:

did the math

For two cups of boiling water, 6 cups of sugar would be needed

The first step is to determine how many cups of sugar that would be needed for one cup of boiling water

The number of cups of sugar needed for a cup of boiling water = cups of sugar / cups of boiling water

2 ÷  [tex]\frac{2}{3}[/tex]

2 x [tex]\frac{3}{2}[/tex] = 3 cups

The second step is to determine the number of cups of sugar that would be needed with two cups of boiling water

Cups of sugar needed for 2 cups of water = cups of sugar needed for one cups of boiling water x 2

3 cups x 2 cups = 6 cups

In order to determine the cups of sugar needed for two cups of boiling water, first determine the number of cups of sugar needed for a cup of boiling water. Use the figure determined to find the cups of sugar needed for 2 cups of water

A similar question was solved here: https://brainly.com/question/16614723?referrer=searchResults

To solve the equation (3x+1)+(4x-5)=8x-9, we simplify and solve for x, obtaining x=5 as the solution. Verification by substitution confirms that our solution is correct.

To find the value of X for the equation (3x+1)+(4x-5)=8x-9, we first simplify both sides of the equation by combining like terms. On the left side, we combine the x terms and the constant terms: 3x + 4x + 1 - 5. This simplifies to 7x - 4. The right side of the equation remains as 8x - 9.

Next, we set the simplified left side of the equation equal to the right side: 7x - 4 = 8x - 9. To solve for x, we can subtract 7x from both sides to get x on one side of the equation, resulting in -4 = x - 9. Adding 9 to both sides gives us x = 5 as the solution.

To verify, we substitute x=5 back into the original equation: (3(5)+1)+(4(5)-5) = 15 + 1 + 20 - 5 = 31, and on the right side, 8(5) - 9 = 40 - 9 = 31, which confirms our solution since both sides equal 31.

Answer:

[tex](F+G)x=2x^2+4x-16[/tex]

[tex]Domain[/tex] [tex]=(-\infty,\infty)[/tex]

Step-by-step explanation:

Given that

[tex]F(x)=2x^2+3x-15[/tex]

and  [tex]G(x)=x-1[/tex]

then   [tex](F+G)x = F(x)+G(x)[/tex]

[tex]=(2x^2+3x-15)+(x-1)\\=2x^2+3x-15+x-1\\\\(F+G)x=2x^2+4x-16[/tex]

Domain

since it is a polynomial of degree [tex]2[/tex], the domain will be whole real line  

[tex]domain[/tex] [tex]=(-\infty,\infty)[/tex]

Final answer:

To perform the function operation (F+G)(X), add the functions f(x) and g(x) together to get (F+G)(X) = 2x² + 4x - 16. The domain of this function is all real numbers.

Explanation:

To perform the function operation (F+G)(X), where f(x) is given as 2x² + 3x - 15 and g(x) is x - 1, we simply add the two functions together:

(F+G)(X) = f(x) + g(x)

(F+G)(X) = (2x² + 3x - 15) + (x - 1)

This simplifies to:

(F+G)(X) = 2x² + (3x + x) - (15 + 1)

(F+G)(X) = 2x² + 4x - 16

The domain for this new function is all real numbers, since there are no restrictions such as division by zero or taking the square root of a negative number that would limit the values that x can take.

Answer:

8

Step-by-step explanation:

12+15=27 27+3=30 30+6+4=40 40/5=8

Answer:

the answer is 8

Step-by-step explanation:

12+15+6+4+3 / 5 = 8

Answer:

195in^2 is the correct answer.

Step-by-step explanation:

The additive inverse is the idea of adding a negative number, which is the same as subtraction. Example: 2 + (-3) = 2-3

Based on the example above, if we start off with 3 and add on its additive inverse -3, then 3 + (-3) = 3-3 = 0. In general, x + (-x) = x-x = 0. So adding any number with its additive inverse gets you 0 every time.

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

Extra info:

Answer:

y = -9x + 12

Step-by-step explanation:

first find the slope

m= 3 - 12

1 - 0

m = -9

y = mx + b

y = -9x + 12

(the 12 is the y intercept and is given in the question so there is no need to solve for it)

Question:

Courtney walked from her house to the beach at a constant speed of 4 kilometers per hour and then walked from the beach to the park at a constant speed of 5 kilometers per hour. The entire walk took 2 hours and the total distance Courtney walked was 8 kilometers.

Let b be the number of hours it took Courtney to walk from her house to the beach, and p the number of hours it took her to walk from the beach to the park.

Which system of equations represents this situation?

Answer:

CORRECT (SELECTED)

⎪b+p=2

⎨4b+5p=8