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ruslelena [56]
3 years ago
12

Henry is buying school supplies for the start of th school year. For every 3 pencils he buys 2 pens . If Henry buys 21 pencils.h

ow many total pencils and pens did Henry purchase
Mathematics
2 answers:
Lilit [14]3 years ago
7 0

Answer: He bought 7 pens.

Step-by-step explanation:

21/3 = 7

Tpy6a [65]3 years ago
6 0

Answer:

14

Step-by-step explanation:

So For every 3 pencils he buys, he buys 2 pens. The ratio is 3:2. You want to find another ratio that is 21:x, because he bought 21 pencils, but you don't know how many pens. You could also rewrite ratios into fractions so you would get 3/2 = 21/x. Move the variable and get 3/2x=21. So 3/2 multiplied by what is equal to 21? 3/2 multiplied by 14 is 21.

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Roberto deposits $3,000 into 2 different savings accounts.
KonstantinChe [14]

The total balance of the amount of money deposited into the account at the end of 4 years is $3194.76.

<h3>What is the total balance?</h3>

Simple interest rate is the interest that is paid only on the principal portion of  the amount deposited. Compound interest is when interest is earned on the amount deposited and the interest accrued.

Compound value = amount deposited x (1 + interest rate) ^number of years

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Future value of the account with simple interest = amount deposited + (principal x time x interest rate)

2200 + (2200 x 0.0175 x4) = $2354

Total value = 2354 + 840.76 = $3194.76

To learn more about compound interest, please check: brainly.com/question/26367706

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2x + 5y = 16,3x-5y=-1
lora16 [44]

Answer:

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Step-by-step explanation:

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Ne4ueva [31]
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Enya is building a storage cupboard in the shape of a rectangular prism. The rectangular prism has a square base with side lengt
Brrunno [24]
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The sides have area (4*2.4 ft)*(3.4 ft) = 32.64 ft².

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