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mafiozo [28]
3 years ago
12

A rectangular floor is 7 yards long and 3 yards wide. What is the area of the floor in square feet?

Mathematics
2 answers:
Sati [7]3 years ago
7 0
The area of a rectangle is the product of its length and width:

(7 yds)(3 yds) = 21 square yds.

We must convert this to square feet.  Note that 1 sq yd = 27 sq ft.

Thus, (21 sq yd) times (27 sq ft  /  1 sq yd)  = 21(27) sq ft.  Finish this by multiplying 21 and 27 together.  Be sure to include the units of measurement.
Ronch [10]3 years ago
5 0
21 square feet. Area equals width x lengths. 7*3=21
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It took Everly 55 minutes to run a 10-kilometer race last weekend. If you know that 1 kilometer equals 0.621 mile, how many minu
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Effectus [21]

The z or t score to be used is  (0.422,0.978)

How to find the critical value ?

Critical probability (p*) = 1 - (Alpha / 2), where Alpha is equal to 1 - (the confidence level / 100), is the unit statisticians use to determine the margin of error within a set of data in statistics.

The critical value for α = 0.13 is z_{c} = \frac{z_{1} - \alpha }{2}

The corresponding confidence interval is computed as shown below

CI = (X1_{1}  - X_{2}- z_{c} \sqrt{\frac{a_{1}^{2}}{n_{1} } + \frac{a_{2}^{2}}{n_{2} }}  ,  X1_{1}  - X_{2}+z_{c} \sqrt{\frac{a_{1}^{2}}{n_{1} } + \frac{a_{2}^{2}}{n_{2} }}  )

CI = (2.1 - 1.4- 1.514\sqrt{\frac{1^{2}}{37 } + \frac{0.5_{2}^{2}}{38 }}  ,  2.1  - 1.4 + 1.514 \sqrt{\frac{1^{2}}{37 } + \frac{0.5^{2}}{38 }}  )

CI = (0.422, 0.978)

0.422< mu1 - mu 2 < 0.978

To learn more about finding the critical value from the given link  

brainly.com/question/14040224

#SPJ4

8 0
1 year ago
What are numbers 9-16
musickatia [10]

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the answer 9 - 16 is 13 it is a positive

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3 years ago
I don’t know the answer I just need some points to ask more questions !!! have a good day !!
Vlad [161]

Answer: Ooh, okay. Have fun then I guess.

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