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4 years ago

2. One eighth of books are mystery books. He has 3 mystery books. How many books does Tony have in all l

Mathematics

1 answer:

Fittoniya [83]4 years ago

8 0

Your answer is 24 because 3 divided by 1/8 =24

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What is the area of a regular hexagon with a radius of 14 inches

abruzzese [7]

The area of the hexagon is 678.96

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3 years ago

What is the measure of angle x? Show or explain how you know.

arsen [322]

Answer:

65 degrees

Step-by-step explanation:

y is a right angle and a is 30 degrees. this means that the supplementary engle of x is 45 plus 70 which is 115. 180-115 = 65 degrees.

8 0

3 years ago

Please do elimination method 2x-9y=-36 <br> -14x+18y=-18

Varvara68 [4.7K]

Answer:

The solution to the system of equations will be:

$x=9,\:y=6$

Step-by-step explanation:

Given the system of equations

$\begin{bmatrix}2x-9y=-36\\ -14x+18y=-18\end{bmatrix}$

Multiply 2x-9y=-36 by 7

$14x-63y=-252$

so the system of equations becomes

$\begin{bmatrix}14x-63y=-252\\ -14x+18y=-18\end{bmatrix}$

Adding both equations

$-14x+18y=-18$

$+$

$\underline{14x-63y=-252}$

$-45y=-270$

solve -45y = -270 for y

$-45y=-270$

divide both sides by -45

$\frac{-45y}{-45}=\frac{-270}{-45}$

Simplify

$y=6$

For 14x-63y = -270 plug in y = 6

$14x-63\cdot \:6=-252$

$14x-378=-252$

Add 378 to both sides

$14x-378+378=-252+378$

Simplify

$14x=126$

Divide both sides by 14

$\frac{14x}{14}=\frac{126}{14}$

Simplify

$x=9$

Therefore, the solution to the system of equations will be:

$x=9,\:y=6$

7 0

3 years ago

Solve for w.

zzz [600]

Answer:

w = 24

Step-by-step explanation:

$\frac{5w}{8}$ = 15

Multiply both sides by 8.

5w = 15 × 8

= 120

Find w.

w = 120 ÷ 5

w = 24

3 0

3 years ago

A contractor bought 7.6 ft to the second power of sheet metal. he has used 3.7ft to the scound power so far and has $117 worth

bonufazy [111]

Answer:

x= 30

Step-by-step explanation:

8 0

3 years ago