2 years ago

Explain how science can help people save resources such as coal

2 answers:

6 0

If we develop energy sources which do not use coal, using scientific research, our reliance on coal is diminished; for if we have a technology that doesn't use coal, we don't need to use coal.

lana [24]2 years ago

5 0

They Can recycle it and reuse things so they won't waste instead of just throwing things away

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John buys a computer with a 20% discount. If he paid $760 for the computer, how much was the discount?

Mumz [18]

If there was 20% taken off you add 20% back on and that is how you will get your answer. So take 760 plus the 20% which gives you 912 dollars

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3 years ago

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What is the percent change of 36;63

STatiana [176]

First, find the difference.
63-36=27
Then, divide by the original number.
27/36=0.75
Then, put it in percentage form.
75%

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2 years ago

What coins do you use to make$. 94

serious [3.7K]

3 quarters and a dime a nickel and 4 pennies

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2 years ago

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T.j. gave 16 books to the library book sale. this was 1/3 of his books. how many books did t.j. have?

madreJ [45]

(1/3)x =16 (x represents the total number of books he has)
x=48

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3 years ago

I SPENT 50 POINTS ON THIS, PLEASE HELP

Anestetic [448]

In the figure, we can consider that the base is the side that mesures 12 in and that the height is the side that measures 15 in, since that sides are perpendicular. So, we just need to use the given formula:

$A = \dfrac{bh}{2}\Longrightarrow A = \dfrac{12\cdot15}{2}\Longrightarrow A=6\cdot15\Longrightarrow \boxed{A = 90~\text{in}^2}$

Hence, the area of the triangle is 90 in² (B).

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3 years ago

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