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Doss [256]
3 years ago
5

A rectangle has a length of 10 ft and a width of 6 feet what's the perimeter

Mathematics
1 answer:
LenKa [72]3 years ago
3 0
The perimeter of a rectangle is given by (l is length, w is width):
P = 2(l + w)

Plug in the values:
P = 2(10+6) = 2(16) = 32

So, the perimeter of the rectangle is 32ft.
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Step-by-step explanation:

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3 years ago
Chatty made this square picture. She wants to glue yarn around the border to make a frame. How much yarn does she need?
Romashka [77]

Answer:

60 inches

Step-by-step explanation:

s = 15 in

Perimeter of a Square = 4 s

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7 0
3 years ago
Read 2 more answers
Parabolas y=−2x^2 and y=2x^2 +k intersect at points A and B that are in the third and the fourth quadrants respectively. Find k
OverLord2011 [107]

Answer:

-25  

Step-by-step explanation:

(1)   y = -2x²

(2) y =   2x² + k     Subtract (1) from (2)

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    k = -4x²

The parabolas are <em>symmetrical about the y-axis.</em>

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k = -4(±2.5)² = -4 × 6.25 = -25

8 0
3 years ago
In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Furthermore, there
Vedmedyk [2.9K]

Answer:

a) 151lb.

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Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}.

In this problem, we have that:

\mu = 151, \sigma = 25, n = 16

So

a) The expected value of the sample mean of the weights is 151 lb.

(b) What is the standard deviation of the sampling distribution of the sample mean weight?

This is s = \frac{\sigma}{\sqrt{n}} = \frac{25}{\sqrt{16}} = 6.25

8 0
3 years ago
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timofeeve [1]

Answer:this will help

Step-by-step explanation:https://assets.pearsonschool.com/asset_mgr/pending/Grade_3_topic_1_SE_small.pdf

8 0
3 years ago
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