MATHEMATICS MIDDLE SCHOOL

Jan won 51.9% of the votes in the race for school secretary. She received 415 votes. About how many students are in the school?

Answers

Answer 1
Answer: mental way:
415 / 51.9 * 100 = 800 students in the school.

detailed way:
x is the amount of students in the school.
51.9% * x = 415
(divide both sides by 51.9% (or 0.519))
x = 800 students

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A 12-inch diameter pizza is sliced into sixths. What's the area of one slice?

Answers

find area then divide by 6
area=pir^2

d=2r
d/2=r
d=12
12/2=6=r

area=pi6^2
area=36pi
divide by 6 to find sixths
36pi/6=6pi

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A jar contains 6 red, 8 blue, one white, 7 black, and twoyellow marbles
Use this information to determine the probability of
selecting
1) a white marble
2) a red marble
3) a yellow marble
4) a purple marble
5) a black marble

Answers

Answer:

1) 1/23  2) 6/23  3) 2/23  4) 0/23  5) 7/23

Step-by-step explanation:

There are 23 marbles in total.

1) 1/23    There is 1 white marble.

2) 6/23   There are 6 red marbles.

3) 2/23    There are 2 yellow marbles.

4) 0/23   There are 0 purple marbles.

5) 7/23    There are 7 black marbles.

Which answer best describes the solution to the equation −12j + 4 = −4 – 12j?

A.
one solution

B.
no solution

C.
an infinite number of solutions

D.
j = 3

Answers

Answer and explanation in attachment below.
ok.. so -12j+4=-4-12j
                  -4=  -4
              -12j = -8 -12j
              +12j= -8 +12j 
                   0=-8 

I think it is b. no solution 

The paper around a snow cone has a slant height of 6 inches and a diameter of 3 inches. About how many square inches of paper are needed to make a snow-cone cup

Answers

make a what you didnt finish the question

Which of the following correctly uses absolute value to show the distance between −60 and 13? (5 points)|−60 − 13| = |−73| = 73 units
|−60 + 13| = |−47| = 47 units
|−60 − 13| = |−73| = −73 units
|−60 + 13| = |−47| = −47 units

Answers

A.)|−60 − 13| = |−73| = 73 units is the answer

Estimate each product 5/7×1/9=

Answers

Multiply it out to get 5/7*1/9=5/63.  This is an exact value of the product.
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