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Archy [21]
3 years ago
13

Marco is making a kite, using sticks for its diagonals. One stick is 2 feet long and the other is 3 feet long. How much material

will Marco need to make the kite?
Mathematics
2 answers:
Korolek [52]3 years ago
6 0

Answer:

I just did it and the answer is 3

Step-by-step explanation:

Marat540 [252]3 years ago
3 0

Answer:

Marco will need 3\ ft^{2} of material to make the kite

Step-by-step explanation:

we know that

To know how much material Marco will need to make the kite, the area must be calculated.

Remember that the area of the kite is equal to

A=\frac{1}{2}[d1*d2]

where

d1 and d2 are the diagonals of the kite

we have

d1=2\ ft

d2=3\ ft

substitute

A=\frac{1}{2}[2*3]=3\ ft^{2}

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how many weeks of data must be randomly sampled to estimate the mean weekly sales of a new line of athletic footwear? We want 98
Ber [7]

Answer:

We need to sample at least 37 weeks of data.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.98}{2} = 0.01

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.01 = 0.99, so z = 2.327

Now, find the margin of error M as such

M = z*\frac{\sigma}{\sqrt{n}}

We want 98% confidence that the sample mean is within $500 of the population mean, and the population standard deviation is known to be $1300

This is at least n weeks, in which n is found when M = 500, \sigma = 1300

So

M = z*\frac{\sigma}{\sqrt{n}}

500 = 2.327*\frac{1300}{\sqrt{n}}

500\sqrt{n} = 2.327*1300

\sqrt{n} = \frac{2.327*1300}{500}

(\sqrt{n})^{2} = (\frac{2.327*1300}{500})^{2}

n = 36.6

Rounding up

We need to sample at least 37 weeks of data.

8 0
3 years ago
Three of the four points below are on the graph of a proportional relationship between the variables x and y. Which point is NOT
lesya [120]

Answer:

I think 2,6

Step-by-step explanation: X5

4 0
3 years ago
A point particle with charge q is at the center of a Gaussian surface in the form of a cube. The electric flux through any one f
TEA [102]

Answer:

iv. q/6E0

Step-by-step explanation:

Electric flux formula:

The electic flux formula, of a charge q is given by, through an entire cube, is given by:

E = \frac{q}{E_o}

In which E_o is a constant related to the material.

The electric flux through any one face of the cube is:

Key-word is face, and a cube has 6 faces, with the force distributed evenly throughout it. Thus

E_f = \frac{1}{6} \times \frac{q}{E_o} = \frac{q}{6E_o}

And the correct answer is given by option iv.

8 0
3 years ago
Question is shown in the image
astraxan [27]
Your average rate of change for the interval is 3/2 or 1.5, so that should be your answer.
6 0
2 years ago
Please help ASAP!<br> Questions 1-4
marusya05 [52]

Answer:

it is a test I am not going to help

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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