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4 years ago

Write

x-formula"> without exponents.

Mathematics

2 answers:

Gre4nikov [31]4 years ago

7 0

Hello ;
(2a)^3 =(2)^3 (a)^3 = 8(a)^3

creativ13 [48]4 years ago

6 0

(2a)³ = 2³a³ = 8a³ = 8aaa

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Which perfect square lies between the whole numbers 40 and 50?

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3 years ago

A woman is walking at the rate of 90 yards per minute. How fast is she going in feet per second?

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Answer:

She is going at the rate of 4.5 feet per second.

Step-by-step explanation:

Given:

The rate of walking is 90 yards per minute.

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1 minute = 60 seconds.

So, first we find the rate of walking per second in yard = $90\div 60$

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3 years ago

Find the missing b for a trapezoid with a=68, h=4, b=21

MAVERICK [17]

We will have to use the formula for the area of a trapezoid on this problem, which is ( $b_1$ and $b_2$ are the bases of the trapezoid and $h$ is the height):

$\dfrac{b_1 + b_2}{2} \cdot h$

All we need to do is substitute the information we are given into our formula:

$\dfrac{21 + b_2}{2} \cdot 4 = 68$

Now, let's just simplify the equation:

$\dfrac{21 + b_2}{2} \cdot 4 = 68$

$\dfrac{21 + b_2}{2} = 17$

$21 + b_2 = 34$

$b_2 = 13$

The missing base has a length of 13 units.

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4 years ago