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disa [49]
3 years ago
14

Carrie is making a bed skirt for her twin beds. One side of the a mattress measures 39inches, and another side measures 75inches

. How many feet of fabrics will Carrie need to make skirts for both beds?
Mathematics
1 answer:
olganol [36]3 years ago
8 0

Answer:

  38 feet

Step-by-step explanation:

The perimeter of one mattress is twice the sum of the given side lengths, so is ...

  P = 2(75 in + 39 in) = 228 in

Then the perimeter of the two beds will be ...

  total length = 2 × 228 in = 456 in = 38 feet

_____

There are 12 inches in a foot. (456 in)/(12 in/ft) = 38 ft

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I'm not 100% sure, but I think it's $13.90?

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4 years ago
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How do you increase £480 by 7.5%
elena55 [62]
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4 0
3 years ago
Mildred has seven grades on her report card. The overall average of these grades is 77%. After looking more closely at her repor
KIM [24]

Answer:

86

Step-by-step explanation:

Firstly,

Average = Sum/Number of Numbers

Since 7 grades' average is 77, so we can say:

77 = Sum/7

Hence, Sum = 77 * 7 = 539

Now,

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So,

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6 0
3 years ago
At the grocery store, Lily spent m dollars on milk, twice that amount on fruit, and 6 dollars less than 3 times the amount spent
AlladinOne [14]

Answer:

<u>The amount of money Lily had when she left the store, in terms of m, is 86 - 6m</u>

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

m = Milk Lily purchased

2m = Fruit Lily purchased (twice that amount on fruit)

3m - 6 = Bread Lily purchased (6 dollars less than 3 times the amount spent on milk for bread)

Amount of money Lily entered = $ 80

2. How much money did Lily have when she left? Write your answer in terms of m.

Let's write the equation to find out the money left in terms of m, this way:

Money left = 80 - m - 2m - (3m - 6)

Money left = 80 - m - 2m - 3m + 6

Money left = 86 - 6m

<u>The amount of money Lily had when she left the store, in terms of m, is 86 - 6m</u>

3 0
3 years ago
Read 2 more answers
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icang [17]

Answer:

3rd choice

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In division for variables with same base, you do subtract top exponent minus bottom exponent. She did that correctly since -3-(-1)=-3+1=-2 and -2-1=-3.  

The problem said m=-2 and n=4 and she replace m with (-2) and n with (4). She did this correctly.

You can multiply base numbers unless the exponents are the same 4 doesn't have the exponent -2 on it so you can't do (4(-2))^(-2)

The error is the 3rd option.

7 0
3 years ago
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