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2 years ago

14

Maria spend 5 hours studying and earned a 90 on her exam. If you want to score a 81, how much time do you need to spend studying

?

1 answer:

Oliga [24]2 years ago

7 0

Answer:

4hrs 30 mins

Step-by-step explanation:

5hrs-90

x-81

cross multiplying gives us

405-90x then dividing through made x=4.5 which is = 4hrs 30mins

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3 years ago

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2 years ago

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2 years ago

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Ashton used 12.6 gallons of gasoline to drive his car on a weekend trip. he averaged 21.5 miles per gallon. about how many miles

7nadin3 [17]

Answer: 270.9 miles.

Step-by-step explanation:

The formula we use here is :

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3 years ago

Cristina has completed .4 of his test. The test has 40 questions total. if he completes 12 more how many more will he have left?

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