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Lilit [14]
3 years ago
13

I need someone to help me please please

Mathematics
1 answer:
iren [92.7K]3 years ago
6 0
I think it is 280 cubic inches: the triangle would be the base, so area would be 1/2(7x10)= 35
Take that area times the height of 8 and you get 280.

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If sally wants to have 400 square yards of carpet installed which company would be cheaper?
Nina [5.8K]

Answer: country carpets are cheaper

Step-by-step explanation:

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The campsite is square in shape and has an area of 4225 m2. What is the length of the campsite?
ziro4ka [17]
65 x 65= 4,225 m²
hope it helps! (:

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3 years ago
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What is 0.685 in expanded notation
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0 + (6/10) + (8/100) + (5/1000)
8 0
3 years ago
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A city park commission received a donation of playground equipment from a parents' organization. The area of the playground need
dalvyx [7]

Answer:

Length = 20.49 yards and Width = 12.49 yards.

Step-by-step explanation:

The area of the rectangular playground is given by 256 yards square. It is also known that one of the sides of the playground is 8 yards longer than the other side. Therefore, let the smaller side by x yards. Then the longer side will be (x+8) yards. The area of the rectangle is given by:

Area of the rectangle = length * width.

256 = x*(x+8)

x^2 + 8x = 256. Applying the completing the square method gives:

(x)^2 + 2(x)(4) + (4)^2 = 256 + 16

(x+4)^2 = 272. Taking square root on both sides gives:

x+4 = 16.49 or x+4 = -16.49 (to the nearest 2 decimal places).

x = 12.49 or x = -20.49.

Since length cannot be negative, therefore x = 12.49 yards.

Since smaller side = x yards, thus smaller side = 12.49 yards.

Since larger side = (x+8) yards, thus larger side = 12.49+8 = 20.49 yards.

Thus, the length and the width to minimize the perimeter of fencing is 20.49 yards and 12.49 yards respectively!!!

7 0
3 years ago
One of the psychologist's findings is that 18 months after the workshop, a sample of 49 job seekers who received training on set
IceJOKER [234]

Answer:

The psychologist finds that the estimated Cohen's d is 0.583.

Step-by-step explanation:

The Cohen's d is used to calculate the effect size, appied when a null hypothesis is rejected.

It can be calculated for this case of population mean as:

d=\dfrac{M-\mu}{\sigma}=\dfrac{6.5-5.8}{1.2}=\dfrac{0.7}{1.2}=0.583

The psychologist finds that the estimated Cohen's d is 0.583.

8 0
3 years ago
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