2 years ago

What is -7 to the 4 power in expanded form?

Mathematics

1 answer:

kotykmax [81]2 years ago

8 0

Answer:

-7 x -7 x -7 x -7

Step-by-step explanation:

To the fourth power mean times itself four times

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X^2+2x+9=(x+1)^2+n What is n?

Sav [38]

Answer:

I believe that the answer is 'n=8'.

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2 years ago

Pamela drove her car 99 kilometers and used 9 liters of fuel. She wants to know how many kilometers (k) she can drive with 12 li

masya89 [10]

Answer:

132 kilometers

Step-by-step explanation:

Given: Pamela drove her car 99 kilometers and used 9 liters of fuel.

To find: Number of kilometers Pamela drove in 12 liters of fuel.

Solution:

It is given that Pamela drove her car 99 kilometers and used 9 liters of fuel. Also the relationship between kilometers and fuel is proportional.

So, let us assume that she can travel x kilometers in 12 liters of fuel.

By proportionality we have,

$99:9 :: x:12$

$\frac{99}{9} =\frac{x}{12}$

$11=\frac{x}{12}$

$x=12\times11$

$x=132$

Hence, she can travel 132 kilometers in 12 liters of petrol.

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3 years ago

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Y = 1/2x -4 plz show the graph, I really need to know! But it's 8th grade math!

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Answer:

(-4, 8)

Step-by-step explanation:

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3x + 2y — z + 5w = 20<br> y = 2z – 3w<br> z= w+1<br> 2w =8

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