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3 years ago

Solve 7n - 4(5 - 2n) = 10

Mathematics

1 answer:

oksian1 [2.3K]3 years ago

6 0

Start with multiplication. 7n-20+8n=10. Now, combine the like terms. 15n=30. Divide. n=2.

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lana66690 [7]

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3 years ago

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Nookie1986 [14]

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2 years ago

Which equation is the inverse of y = 7x2 – 10?

MrRissso [65]

we have

$y=7x^{2}-10$

To find the inverse

Step 1

Exchanges the variables, x for y and y for x

$x=7y^{2}-10$

Step 2

Isolate the variable y

$x=7y^{2}-10$

$7y^{2}=x+10$

$y^{2}= \frac{x+10}{7}$

Square Root both sides

$y=(+/-)\sqrt{\frac{x+10}{7}}$

Step 3

Let

$f(x)^{-1}=y$

$f(x)^{-1}=(+/-)\sqrt{\frac{x+10}{7}}$

therefore

<u>the answer is</u>

The inverse is

$f(x)^{-1}=(+/-)\sqrt{\frac{x+10}{7}}$

8 0

3 years ago

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the length of my living rooom is 24 feet. the width of my living room is 1/2 the length. what is the area of my living room.

stich3 [128]

The width of my living room is 1/2 the length :

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The area of my living room :

$24 \times 12 = 288 \: {ft}^{2}$

Answer: 288

Ok done. Thank to me :>

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3 years ago

Write the equation of the line, in slope-intercept form, with the

IrinaVladis [17]

Answer:

y = -x -1

Step-by-step explanation:

x1= 0, y1= -1

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-1 = x/(y+1)

-1 (y+1) = x

y+1 = -x

y= -x -1

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3 years ago