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MrRissso [65]
3 years ago
5

A 120 pound student playing volleyball burns 2.7 calories per minute. If the student plays for 30 minutes, (1) how many calories

will the student burn? An in-line skater, who is the same weight as the volleyball student, burns 387 calories in 90 minutes. (2) How many calories does the in-line skater burn per minute? (3) Which activity burns more calories per minute? Multiple answers are required.
Select one or more:
a. (1) 81
b. (1) 44.4
c. (1) 4
d. (2) 4.3
e. (2) 243
f. (2) 143.3
g. (3)the in-line skater
h. (3) the volleyball student
Mathematics
2 answers:
otez555 [7]3 years ago
7 0

Answer:

A. 81

Step-by-step explanation:

For #1. you multiply 2.7x30=81

Ex: 2x30= 60.0

     7x30=  21.0

     60+21= 81

alexdok [17]3 years ago
6 0

Answer:

(1) = 81, (2) = 4.3, and (3) = It's in-line skater

Step-by-step explanation:

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6 0
2 years ago
4(x+8)-2(x-7)=46 x=?
Scorpion4ik [409]

Answer:

x = 0/2

x = 0

Step-by-step explanation:

4(x+8)-2(x-7) = 46

Expanding the brackets

4x +32 - 2x +14 = 46

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5 0
2 years ago
First examples pt 1 no one answer
andrew11 [14]

Answer:

  It takes the second worker 11 hours to do the job alone  

Step-by-step explanation:

The problem tells you how to work it.

  \dfrac{1}{11}+\dfrac{1}{x}=\dfrac{2}{11}\\\\x+11=2x \qquad\text{multiply by 11x}\\\\11=x \qquad\text{subtract x}

x = 11 tells you the second worker takes 11 hours to do the job alone.

_____

You can also work directly with the fractions. Subtract 1/11 and you have ...

  1/x = 1/11

It should not be a real stretch to see that x=11. If you need, you can multiply both sides by 11x to get 11=x.

3 0
3 years ago
R is between Q and S. if RS = 44.6 and SQ = 68.4, find QR
Igoryamba
QR IS 23.8! Just subtract 68.4-44.6. The answer is right because 44.6+23.8=68.4
4 0
3 years ago
A proper fraction is converted to a decimal equivalent by dividing the denominator into the numerator. True
kondaur [170]

False, it's the other way around: you divide the numerator by the denominator.

For example, to evaluate \frac{8}{15} you divide 8 by 15:

\dfrac{8}{15} = 8\div 15 = 0.5\overline{3}

7 0
3 years ago
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