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sweet [91]
3 years ago
7

BRAINLIEST!!!

Mathematics
2 answers:
Maslowich3 years ago
6 0
If all the sides are doubled, then the surface area
is multiplied by (2²) = 4 times as great.

That would be 320 m² .
irina1246 [14]3 years ago
6 0

Answer:

320 lol

Step-by-step explanation:

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Find the value of x in the equation without evaluating the power
Y_Kistochka [10]

Step-by-step explanation:

a)2^8=256

2^5*2^x=2^8

5+x=8

x=8-5

x=3

b)(1/3)^6

(1/3)^2*(1/3)^x=(1/3)^6

2+x=6

x=6-2

x=4

therefore the value of x in a is 3

and the value of x in b is 4

hope it helps u...pls mark it as the brainliest answer..

3 0
3 years ago
Morgan spent $30 on school supplies. He
mestny [16]

To help solve this problem, create an equation.

Let x = number of notebooks

$30 = $22.50 + $1.50x. Subtract $22.50 from each side.

$7.5 = $1.50x. Divide each side by $1.50.

5 = x.

Morgan bought 5 notebooks.

5 0
3 years ago
Combine like terms.
Ivahew [28]
The answer is going to be c because 12-35=23 and since there is variables you have to add the variable.
5 0
3 years ago
Read 2 more answers
The length of a phone conversation is normally distributed with a mean of 4 minutes and a standard deviation of 0.6 minutes. Wha
Arlecino [84]
The z-score for 5 minutes is found from:
z=\frac{X-\mu}{\sigma}

z=\frac{5-4}{0.6}=1.667
Reference to a normal distribution table shows that the cumulative probability for a z-score of 1.667 is around 0.9522.
Therefore the probability that a conversation lasts for longer than 5 minutes is:
1 - 0.9522 = 0.048 to 3 d.p.
8 0
4 years ago
Read 2 more answers
$28 lunches; 15% tip
nikklg [1K]

Answer: $4.20 tip

Step-by-step explanation:

15% of 28 is 4.2

Using a calculator, you can find the value of the tip by multiplying 0.15 by 28.

6 0
3 years ago
Read 2 more answers
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