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Viktor [21]
4 years ago
14

When we use energy the energy is destroyed true or false​

Mathematics
1 answer:
strojnjashka [21]4 years ago
8 0
False. Energy can not be destroyed
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Alyssa is building a brick mailbox. She is going to stack bricks that are each \dfrac23 \text{ft}
aalyn [17]
Given that each of the brick is \frac{2}{3} ft tall and the finished stack of bricks is 4\frac{2}{3} ft tall.

Let the number of bricks in the stack be x, then

\frac{2}{3} x=4 \frac{2}{3} = \frac{14}{3}  \\  \\ \Rightarrow x= \frac{ \frac{14}{3} }{ \frac{2}{3} } = \frac{14}{3} \times \frac{3}{2}  \\  \\ = \frac{14}{2} =7

Therefore, 7 bricks will go in the stack.
3 0
3 years ago
What is the median of this data set?<br> {29, 22, 23, 31, 29, 29, 22, 23}
Firlakuza [10]

Answer:

The median is 26

Step-by-step explanation:

A "median" is equivalent to when the terms are arranged in the proper order, whichever term is in the "middle".

So- first, arrange the terms in ascending order.

[22, 22, 23, 23, 29, 29, 29, 31]

There are an even number- eight- terms in total, so we will take the average of the two "middle" terms.

(29+23)/2; 29 and 23 are the "middle" terms, and there are two of them.

(52)/2 = 26

Therefore, the median is 26.

I hope this helped! :)

4 0
2 years ago
Read 2 more answers
4(3x – 1) – 2(6 + 2x)
krok68 [10]

Answer:

12x - 12

Step-by-step explanation:

4(3x)= 12x

-2 x 6 = -12

And since you are taking away 12 it works.

( Have a nice day hope this helps)

6 0
3 years ago
Read 2 more answers
$78 per hour to cents per minute.​
yanalaym [24]

Answer:

130 cents per minute

Step-by-step explanation:

Convert dollars to cents.

Note that 1$ = 100 cents.

Note that 1 hour = 60 minutes.

Using Dimensional Analysis would be a great way to approach this question and see how each of the units convert.

(78 $/1 hr) ( 1 hr / 60 min ) ( 100 cents / 1 $)

= 130 cents per minute.

3 0
3 years ago
If a polygon has 5 sides is it a regular pentagon
hjlf
No it is not anything can have 5 sides but not form a pentogon 

7 0
3 years ago
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