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natali 33 [55]
3 years ago
5

You are updating your garage and the only thing left to paint is your garage door. You

Mathematics
1 answer:
Shtirlitz [24]3 years ago
7 0

Answer:

129 square foot

Step-by-step explanation:

<u>Step 1: Convert height of the door to inches</u>

Height of the door = 10 feet 8 inches

1 feet = 12 inches

10 feet = y inches

<em>Cross Multiply</em>

y = 120 inches

Height of door in inches = 120 + 8 =128 inches

<u>Step 2: Find the surface area of one side of the door</u>

Surface area = length x width

length = 128 inches

width = 145 inches

Surface area = 128 x 145

Surface area = 18560 inches

<u>Step 3: Convert surface area from inches to square foot</u>

Surface area = 18560 inches

1 square foot = 144 inches

         y           = 18560 inches

<em>Cross multiply</em>

144y = 18560

y = 18560/144

y = 128.89 rounded off to 129 square foot.

Therefore, you should report 129 square foot surface area to the hardware store.

!!

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If you take 2 groups of equal cardinality, it could happen that, for example, many of the higher values go to the first group and therefore, many of the low values go to the second group, making their respective means quite different and different from the original sample mean. This could even go worse due to the possible existence of outliers, that is, values that are far different than the sample mean. An outlier tend to disrup the mean of a sample, but for smaller samples the result is much dramatic.

For example, let X be {1,2,3,4,5,6,7,8,9,100}

The elements of X sum 145, hence the mean of X is 14,5. Let divide X in two groups

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The elements of Y sum 20, so its mean is 4

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Both means are quite different from each other and quite different from the mean of X. Note that if we take the mean of the means the result is 4+25/2 = 14,5 which is equal to the mean of X.

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3 years ago
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The equation that relates the number of campers this year to the number of campers last year is c = 440 / 1.10

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<h3>What are percentages?</h3>

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To learn more about percentages, please check: brainly.com/question/25764815

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