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Anastasy [175]
3 years ago
15

Kayla wants to put a wallpaper border around her rectangular room. Her room is 12 feet long and 9 feet wide the wallpaper border

is sold in rolls of 16 feet. How many rolls of the wallpaper border will Kayla need to put around her entire room?
Mathematics
2 answers:
Dominik [7]3 years ago
6 0
12 times 2 + 9 times 2 = 24 + 18 = 42 divided by 16 = 2.625
gizmo_the_mogwai [7]3 years ago
5 0
She will only need 1 roll since it's sold in a 16 feet roll
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Which number has the same value as 28 tens? 28 or 280
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Answer:

450 ounces

Step-by-step explanation:

We know that the cost of the mixture C_m must be the cost of the everyday moisturizing lotion C_e plus the cost of the self-tanning lotion C_s, which means C_m=C_e+C_s.

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But we also know that the number of ounces of the mixture must be the sum of the number of ounces of the everyday moisturizing lotion with the number of ounces of the self-tanning lotion, so we have

n_e c_e + n_s c_s=n_m c_m=(n_e+n_s) c_m=n_e c_m+n_s c_m

We want to calculate the number of ounces of the​ self-tanning lotion (n_s), so we solve for that variable:

n_e c_e + n_s c_s=n_e c_m+n_s c_m

n_s c_s-n_s c_m=n_e c_m-n_e c_e

n_s (c_s-c_m)=n_e(c_m-c_e)

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And substitute our values in this formula, to get:

n_s=\frac{(700\ ounces) (\$1.6-\$0.7)}{(\$3-\$1.6)}=450\ ounces

7 0
3 years ago
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Salsk061 [2.6K]

Answer:

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4 0
2 years ago
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Answer:

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4 0
3 years ago
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