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LenaWriter [7]
3 years ago
8

Which expression is equivalent to21^3 sqrt15 - 9^3 sqrt 15 ?

Mathematics
1 answer:
fgiga [73]3 years ago
7 0

Answer:

D.12^3 sgrt 15

Sana makatulong

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Ashton estimates the square root of 72 in the following way: √72= 2√36=2×6=12 A)Explain why his reasoning is incorrect. B)Estima
Dafna1 [17]

Answer:

8.5

Step-by-step explanation:

To find √72, we must factor 72, remembering that the factor 36 is a perfect square:

√72 = √2·√36, or 6√2.  Ashton failed to take the square root of the factor 2 of 72.

√72 = 6√2, and √2 is approx. 1.414.

Multiplying 1.414 by 6 results in 8.5, which is to the nearest tenth.

7 0
3 years ago
it takes a baseball team 2 hours to complete a game.how long will it take to complete 2/3 of the game.
natima [27]
2 hours is 120 minutes
120 min * 2/3 is 80 minutes
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3 years ago
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ss7ja [257]
The answer is option A. I believe
5 0
3 years ago
What is the potential energy of a 500kg elevator that is 4.0m high from the floor?
rodikova [14]

Answer:

<h2>19,600 J</h2>

Step-by-step explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 9.8 m/s²

We have

PE = 500 × 9.8 × 4

We have the final answer as

<h3>19,600 J</h3>

Hope this helps you

6 0
3 years ago
What is the solution to the equation?
VLD [36.1K]

Answer:

n = 1/2

Step-by-step explanation:

4/5(1/2) - 1/5 = 2/5(1/2)

4/10 - 2/10 = 2/10

7 0
3 years ago
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