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Mathematics 19 Online
OpenStudy (triniti):

pleazzzzzzzzzzz help

OpenStudy (triniti):

Write an expression that can be used to solve the problem. During practice, it took Shawn 27 min to swim 81 laps. If Shawn swam at a constant rate, how long did it take him to complete each lap? A. B. C. D.

OpenStudy (dani_rose):

What were the answer choices?

OpenStudy (dani_rose):

\[81\div27=3\]

OpenStudy (dani_rose):

It took him 3 minutes to complete each lap

OpenStudy (dani_rose):

@triniti

OpenStudy (triniti):

A.8/160 B.160/8 C.160+8 D.160*8

OpenStudy (dani_rose):

That will be your answer

OpenStudy (triniti):

i think it is B

OpenStudy (triniti):

am i right

OpenStudy (dani_rose):

um idk i don't get how those answer choices go with the problem

OpenStudy (triniti):

Write an expression that can be used to solve the problem. Ricardo read 160 pages of a book over a period of 8 days. He followed a schedule in which he read the same number of pages each day. How many pages did Ricardo read each day? A. B. C. D.

OpenStudy (dani_rose):

Yeah it's B

OpenStudy (dani_rose):

\[160\div8\]

OpenStudy (triniti):

A. 8/160 B. 160/8 C.160+8 D.160*8

OpenStudy (dani_rose):

Your answer is B

OpenStudy (triniti):

what question is b

OpenStudy (dani_rose):

The first one is 3 and the second one is 160/8

OpenStudy (triniti):

for this question

OpenStudy (dani_rose):

For this question about Ricardo the answer is B. 160/8

OpenStudy (dani_rose):

Do you understand? or do i need to explain it?

OpenStudy (triniti):

The label on a can of cashews said that there were 168 calories in 8 servings. Which equation could be used to determine the number of calories in each serving? A.c=168*8 B.c=168+8 C.c=168/8 D.c=168-8

OpenStudy (triniti):

yes i understand

OpenStudy (dani_rose):

ok and for this one the answer is C. 168/8

OpenStudy (triniti):

A grocery store is selling 12 bananas for $2.40. At this rate, what is the cost of 15 bananas? A. $2.52 B. $2.55 C. $3.00 D. $36.00

OpenStudy (dani_rose):

It should be $3.00 because $2.40/12=0.2 and 0.2*15=3

OpenStudy (dani_rose):

@triniti

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