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3 years ago

When h has the value 6 calculate 5h + 9

Mathematics

2 answers:

vova2212 [387]3 years ago

6 0

You multiply 5 and 6 =30 then you add 9 and that's 39

marysya [2.9K]3 years ago

3 0

You said that the value of h is 6 then put the 6 there then you have to multiply the 5*6 you get 30 then add the 9 and that gives you 39

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2 years ago

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2 years ago

Lizzie has 30 coins that total $4.80. All of her coins are dimes, D, and quarters, Q. Algebraically determine how many of each t

Gnom [1K]

Lizzie has 18 dimes and 12 quarters

<em><u>Solution:</u></em>

Let "d" be the number of dimes

Let "q" be the number of quarters

We know that,

value of 1 dime = $ 0.10

value of 1 quarter = $ 0.25

Given that LIzzie has 30 coins

number of dimes + number of quarters = 30

d + q = 30 ---- eqn 1

Also given that the coins total $ 4.80

number of dimes x value of 1 dime + number of quarters x value of 1 quarter = 4.80

$d \times 0.10 + q \times 0.25 = 4.80$

0.1d + 0.25q = 4.8 ------ eqn 2

Let us solve eqn 1 and eqn 2

From eqn 1,

d = 30 - q ---- eqn 3

Substitute eqn 3 in eqn 2

0.1(30 - q) + 0.25q = 4.8

3 - 0.1q + 0.25q = 4.8

0.15q = 1.8

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d = 30 - 12

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago

Please check my answer I got 14/16<br> 20 points

ella [17]

Answer:

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Step-by-step explanation:

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3 years ago

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