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givi [52]
3 years ago
15

Ken started a savings account for school. He plans on spending 10% of the money he earns for leisure activities. He needs to hav

e $2,160 in the bank before he starts school. how much must he earn to have the amount needed for school?
Mathematics
1 answer:
KiRa [710]3 years ago
7 0

Answer:

He must earn $2,400 to cover both leisure and $2,160 for school expenses.

Step-by-step explanation:

Let the total amount Ken must earn be k.  Then 10% of that would cover leisure activities and the remaining 90% specifically for school expenses.

Then 0.90k = $2,160, and k = $2,400.

He must earn $2,400 to cover both leisure and $2,160 for school expenses.

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The short sides of a rectangle are 2 inches. The long sides of the same rectangle are three less than an unknown
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Answer:

The first student is correct

Step-by-step explanation:

With the given information there is already 4 inches on the rectangle. 13 x2 = 26. 26+4=30. For student two if the unknown number was 10 it would not work because the longest side is 3 less then the unknown number. 10-3=7. 7x2=14. 14+4= 28<30

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3 years ago
The ratio of boys and girls in a 4:3.If there are 20 boys, find the number of girls.​
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Answer:

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Step-by-step explanation:

The ratio is 4:3, meaning there are 7 parts.

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3 years ago
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Mr. Mole's burrow was at an altitude of 6 meters below the ground.

Step-by-step explanation:

Step 1:

We need to determine the distance that Mr. Mole covers in a single minute.

To do that we divide the difference in values of altitude by the difference in the time periods.

For the first case, Mr. Mole had traveled -18 meters in 5 minutes.

We also have, he traveled -25.2 meters in 8 minutes.

Step 2:

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The altitude of Mr. Mole's burrow = -18 - 5(-2.4) = -18+12 = -6.

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3 years ago
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The multiplicative identity property allows this to be true.

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Opposite operation of multiplication = division. 
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