Answer:
f(x) = -3x
Step-by-step explanation:
f(x) = -3x
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
<u>Answer:</u>
225 ft²
<u>Steps:</u>
(20×10)+5² = 200+25 = 225 ft²
Answer:
Step-by-step explanation:
Surface area of the triangular prism = 2B + ph
B is the base area = 11 * 14
B = 154 sq. cm
p is the perimeter of the base =