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3 years ago

12

Write (27a^-9)^2/3 in simplest form

1 answer:

yulyashka [42]3 years ago

4 0

2 to the second power times a to the negative four power
-------------
four times a to the negative four power

2(2)*a(-4)
-----------
4a(-4)

Or if you can't use negatives

4
----
a(4)

Four overtop a to the fourth power
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The amount of a chemical solution is measured to be 2 liters. What is the percent error of the measurement?

dezoksy [38]

The complete question in the attached figure

we know that
2 liters may be 1.5 to 1.9 rounded up to 2
or 2.1 to 2.4 rounded down to 2

the biggest percent error would be between 2 and 1.5, which is a volume error of 0.5 liters
2 - 1.5 = 0.5 liters
percent error = (absolute error / quantity) * 100
percent error = [0.5/2] * 100% = 0.25 * 100% = 25%

the answer is the option C) 25%

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3 years ago

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I need help on this question pls

Ivanshal [37]

Answer:

t = 17.5 f = 12

Step-by-step explanation:

If <em>MNOP </em>is a square, you know that each angle is going to be 90°. To solve, let's first set each equation equal to 90°:

$90 = 4t + 20$

and

$90 = 7f + 6$

Then solve both equations:

$90 = 4t + 20 \\ 70 = 4t \\ 17.5 = t$

and

$90 = 7f + 6 \\ 84 = 7f \\ 12 = f$

I hope that helps!

7 0

3 years ago

Of the following integers, which is the closest approximation to (2âˆš+5âˆš)2(2+5)2?A. 7B. 10C. 13D. 15E. 17

MAXImum [283]

Answer:

C. 13

Step-by-step explanation:

from on online source, the question should be placed as thus:

Of the following integers, which is the closest approximation to (√2 + √5)^2 ?

A. 7

B. 10

C. 13

D. 15

E. 17

This is known as Algebraic expression. So we have to expand to simplify further

using this identity th (a+b)^2 = a^2 + b^2 +2ab

(√2 + √5)^2 =

(√2 + √5)(√2 + √5)

................Expansion of the above

$\sqrt{2}* \sqrt{2} +\sqrt{2}* \sqrt{5} +\sqrt{2} *\sqrt{5}+\sqrt{5} *\sqrt{5}$

2 + 5 + 2√10

~ 2 +5 + 2(3)

C. 13

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3 years ago

Which graph shows the equation V = 4 + 2t, where V is the total volume of water in a bucket and t is the elapsed time in minutes

kodGreya [7K]

1. Subtract 4 from both sides
v - 4 = 2t
2. Divide both sides by 2
v - 4/2 = t
3. Switch sides
t = v - 4/2

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3 years ago

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Whats half of 30 i need a answer

Flura [38]

Answer:

15

Step-by-step explanation:

30 / 2 = 15

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3 years ago

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