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vitfil [10]
3 years ago
5

Reagan used 1,221 sq ft of wrapping paper to wrap gifts for everyone in her class. If each gift used the same amount of wrapping

paper and she wrapped 21 gifts, how much wrapping paper did she use for each gift?
Mathematics
2 answers:
ipn [44]3 years ago
8 0
She used 1221 wrapping paper for 21 gifts, so to find the individual amount, you would do:
1221/21
She used about 58.143 ft² of wrapping paper for each gift.
DaniilM [7]3 years ago
7 0
<span>regan would use 58.14 square feet for each gift

</span>
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Write a multiplication sentence that shows the zero property of multiplication. Explain why it shows this property.
Aloiza [94]
Okay so the zero property of multiplication is anything times zero equals zero, so just use a number, multiply it times zero, and show what it equals (which is zero) explain that it shows the property because the variable is multiplied times zero.
4 0
3 years ago
Suppose that the current measurements in a strip of wire are assumed to follow a normal distribution with a mean of 10 millimete
KiRa [710]

Answer: the probability that a measurement exceeds 13 milliamperes is 0.067

Step-by-step explanation:

Suppose that the current measurements in a strip of wire are assumed to follow a normal distribution, we would apply the formula for normal distribution which is expressed as

z = (x - µ)/σ

Where

x = current measurements in a strip.

µ = mean current

σ = standard deviation

From the information given,

µ = 10

σ = 2

We want to find the probability that a measurement exceeds 13 milliamperes. It is expressed as

P(x > 13) = 1 - P(x ≤ 13)

For x = 13,

z = (13 - 10)/2 = 1.5

Looking at the normal distribution table, the probability corresponding to the z score is 0.933

P(x > 13) = 1 - 0.933 = 0.067

6 0
3 years ago
A plastic bin in the shape of a cube contains 900 marbles, each with a volume of 8 in?. If the cube has side lengths of 2 feet,
qaws [65]
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8 0
2 years ago
Which expression is equivalent to 3/4 1/2
d1i1m1o1n [39]

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kkk

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kkkkkkhjhj

3 0
3 years ago
Find the area of a regular decagon with perimeter 100 units. Show all work.
Slav-nsk [51]
A regular polygon has ten (10) equal sides ( since it is regular).
We are given with the perimeter value which is 100 units and the perimeter formula is P = 10a
Solving for a (the side measurement), we have:
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We can now proceed in solving the area and the formula is shown below:
Area = 5/2 a√ (5+2√5)
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Area = 76.94 square units

The answer is 96.94 square units.
4 0
3 years ago
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