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Marizza181 [45]
3 years ago
15

At last month's trivia competition, 20 questions were about history and geography, and the other 35 questions were about pop cul

ture. This month, the number of history and geography questions increased by 15%, while the number of pop culture decreased by 20%.
Find the percent change in total number of questions from last month to this month.

A.
The total number of questions decreased by about 4%.
B.
The total number of questions increased by about 17.5%.
C.
The total number of questions increased by about 8%.
D.
The total number of questions decreased by about 7%.
Mathematics
1 answer:
valkas [14]3 years ago
8 0

Answer:

About 7% is the anwser i tried 4% and i got it wrong and it said 7 was correct

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Answer:

6.375 cups of raisins

Step-by-step explanation:

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(4.25 ÷ 2) × 3 = 6.375

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The standard form of the equation of a circle is (x-h)^2 + (y-k)^2 = r^2, where (h,k) is the center of the circle, (x,y) is a point of the circle, and r is the length of the radius of the circle. When the equation of a circle is written, h,k, and r are numbers, while x and y are still variables. (x-2)^2 + (y-k)^2 = 16 is an example of a circle. The problem gives us two of the three things that a circle has, a point (5,9) and the center (-2,3). We need to find the radius in order to write the equation. We substitute -2 for h, 3 for k, 5 for x, and 9 for y to get (5 - (-2))^2 + (9 - 3)^2 = r^2 We simplify: 49 + 36 = r^2, r^2 = 85. We only need to know r^2 because the equation of a circle has r^2. We now have all the information to write the equation of a circle. (x + 2)^2 + (y - 3)^2 = 85.
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Answer:

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Step-by-step explanation:

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3 years ago
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