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bija089 [108]
3 years ago
5

It takes the teacher 39 minutes to grade 3 book reports. At this rate, how long will it take the teacher to grade 120 book repor

ts?
Mathematics
2 answers:
zzz [600]3 years ago
7 0

it will take 1560 minutes

zheka24 [161]3 years ago
4 0

Answer:

26 hours

Step-by-step explanation:

first you need to divide 39 by 3 to get 13 now once you get 13 you will multiply it by 120 once you are done you get 1560 now the number that we got is how long a teacher would have to grade in minutes now if you want we can convert it into hours which would give us 26 hours.

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What is the interest earned for $5,000 compounded annually for 4 year at 6%.
Lady_Fox [76]

Answer:

Step-by-step explanation:

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3 years ago
Evaluate n^2 -m. If you n=-5 and m=3
Roman55 [17]

Answer:

22

Step-by-step explanation:

n² - m =

-5² - 3 =

25 - 3 = 22

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3 years ago
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It would be the first one
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3 years ago
A sporting goods company used 904.39 cubic inches of air to inflate a red rubber ball. What is the radius of the ball
Charra [1.4K]

Answer:6.0002inch

Step-by-step explanation:

Volume of sphere=904.39

π=3.14

Volume of sphere=4/3 xπ x r^3

904.39=4/3 x 3.14 x r^3

904.39=(4x3.14xr^3) ➗ 3

904.39=(12.56xr^3) ➗ 3

Cross multiplying we get

904.39x3=12.56xr^3

2713.17=12.56xr^3

r^3=2713.17 ➗ 12.56

r^3=216.02

Taking the cube root of both sides

r=3√216.02

r=6.0002

7 0
3 years ago
You throw three darts in a numbered region of the dart board that has the scores of 2, 5, and 8. How many different sums are pos
givi [52]

Answer:

12 different sums

Step-by-step explanation:

there's three darts and three numbers.

if you use the factorial 3! for both the number of darts and the score numbers and add the two together, you would get twelve :

( 3! = 3*2*1 = 6 ) * 2

6 + 6 = 12

or you could just write out all the combinations like this :

2+2+2

2+2+5

2+5+5

2+5+8

2+8+8

5+5+2

5+5+5

5+5+8

5+8+8

8+8+2

8+8+5

8+8+8

6 0
4 years ago
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