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stiks02 [169]
3 years ago
5

I ONLY HAVE TODAY TO DO THIS!

Mathematics
2 answers:
luda_lava [24]3 years ago
8 0
The answer is 2.1 if the height of the cylinder
andrey2020 [161]3 years ago
4 0
The answer would be 2.1
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Please select the best answer from the choices provided
Ira Lisetskai [31]

<u>Answer:</u>

The correct answer option is c. \frac{1}{9a^2}.

<u>Step-by-step explanation:</u>

We are given an expression (27a^{-3})^{-\frac{2}{3} } and we are supposed to simplify it.

We can also write (27a^{-3})^{-\frac{2}{3} } as (\frac{3^3}{a^3} )^{-\frac{2}{3} }.

We know the power rule (a^m)^n=a^{mn} which means that to raise a power to a power you need to multiply the exponents.

So multiplying the exponents to get:

\frac{3^{(3.-\frac{2}{3})} }{a^{(3.\frac{2}{3})} }\\\\\frac{3^{-2}}{a^2}\\ \\\frac{1}{3^2a^2} \\\\\frac{1}{9a^2}

Therefore, the correct answer option is c. \frac{1}{9a^2}.

4 0
3 years ago
Two adjacent rooms are rectangles, both of length 13 feet by 10 feet. Jerry wants to change the carpets in both rooms. How many
Ugo [173]

Answer:

  260 square feet

Step-by-step explanation:

The area of a rectangle is given by the formula ...

  A = LW

The area of two same-size rectangular rooms will be double the area of one of them.

__

<h3>room area</h3>

Each room has an area of ...

  A = LW = (13 ft)(10 ft) = 130 ft²

<h3>carpet order</h3>

The order for carpet must be for 2 times the area of one room:

  carpet order = 2 × 130 ft² = 260 ft²

Jerry should order 260 square feet of carpet.

6 0
2 years ago
1. A die is rolled once. What is the probability of rolling :
aleksklad [387]
Assuming this is a 6-sided die:

(a) 1/6 = 0.167 or 16.7 %
(b) zero (numbers on the die are 1-6)
(c) 3/6 = 50% (can be 2, 4, or 6)
(d) 3/6 = 50% (of the numbers you could roll, 2, 3, and 5 are prime)
7 0
3 years ago
Use PEMDAS to evaluate the expression 8 x 4 − 21 ÷ 3 + 5.<br><br> 30<br> 32<br> 34<br> 36
VikaD [51]
the answer should be 30
4 0
2 years ago
Read 2 more answers
Simplify 30! / 28!<br><br> Please post the correct answer. Don’t send links
viva [34]
The answer is
3 divided by 2
Hope this helped
5 0
3 years ago
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