Using proportions, it is found that $15.00 in quarters weigh 29.4 grams less today than before 1965.
<h3>What is a proportion?</h3>
A proportion is a fraction of a total amount.
In this problem, a quarter is worth $0.25, hence $15.00 in quarters is composed by 60 quarters, as:
Before 1965, the total weight was of:
60 x 6.25 = 375 grams.
After that, the total weight is of:
60 x 5.76 = 345.6 grams.
Hence the difference is:
375 - 345.6 = 29.4.
$15.00 in quarters weigh 29.4 grams less today than before 1965.
More can be learned about proportions at brainly.com/question/24372153
.8 percent of 200 is 1600 becaus 2000* .8=1600
<span>f(x)=<span><span><span>x2</span>−1</span><span>x−1
</span></span></span><span>I just gave you a rational function that has a hole at x=1</span>
Answer:
The relation between the sides and angles of a right triangle is the basis for trigonometry.
Step-by-step explanation:
The side opposite the right angle is called the hypotenuse (side c in the figure). The sides adjacent to the right angle are called legs (sides a and b ).