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const2013 [10]
4 years ago
15

Kim surveyed 80 students at her school and found that 0.65 of the students she surveyed said their favorite class is math. Anoth

er 15% of the students she surveyed reported that their favorite class is science. How many more students in the survey prefer math over science?
Mathematics
1 answer:
lilavasa [31]4 years ago
7 0
80*.65=52
15%(80)=12

40 more prefer math over science
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The sum of two numbers is 45. One number is 9 more than the<br> other one. Find the numbers.
Sophie [7]

Answer:

27+18=45

Step-by-step explanation:

x+y=45

x+9=y

(x+9)+x=45

(18+9)+18=45

27+18=45

6 0
3 years ago
Anzelm wants to burn 540 calories while jogging. Jogging burns about 12 calories per minute. When Anzelm goes jogging, he usuall
kow [346]

Anzelm wants to burn 540 calories while jogging. Jogging burns about 12 calories per minute.

he usually plans to stop and rest for about 5 minutes.

m  represents the total minutes.

12 calories per minute.

for m minutes the calories burn is 12m

He stop and rest for about 5 minutes. so we need to subtract 5 from total minutes

So expression becomes 12(m-5)

He wants to burn 540 calories. So we set the calories = 540

The equation becomes ,

12(m-5) = 540

Now we solve for m , total number of minutes

12(m-5) = 540(divide by 12 on both sides)

m - 5 = 45

m = 50 ( add 5 on both sides)

Anzelm should plan to be out jogging for 50 minutes






4 0
4 years ago
Read 2 more answers
Factor −13 out of −13x−8.
Citrus2011 [14]

Answer:

i believe its x+5

Step-by-step explanation:

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8 0
4 years ago
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Jabal and Michael are walking to school and agree to leave their homes at the same time.
kirill115 [55]

Answer: 6 seconds

Step-by-step explanation:

Time            Jabal (2.5mps)            Michael (5mps)

Start              15                                   0

1 sec              17.50                              5

2                    20                                  10

3                    22.5                               15

4                    25                                  20

5                    27.5                               25

6                    30                                  30

7

8

9

10

8 0
3 years ago
Read 2 more answers
The population of Jefferson City is 95000. Assuming a growth rate of 2.5% per year, what will the population be in 15 years?
Softa [21]

Answer:

<u>Y</u><u>early growth: 137,588</u>

<u>Continuous growth:</u><u> </u><u>3</u><u>,</u><u>9</u><u>71</u><u>,</u><u>611</u>

3 0
3 years ago
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