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11Alexandr11 [23.1K]

3 years ago

14

What is the mean of the set 90, 82, 88, 78, 93,

2 answers:

Georgia [21]3 years ago

8 0

You need to add all of your numbers together, then divide by the how many numbers you had before you added them together. You should get 431.

vekshin13 years ago

5 0

431 would be the answer hope this helps

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Which linear inequality is represented by the graph? y ≤ 1/2x + 2 y ≥ 1/2x + 2 y ≤ 2/3x + 2 y ≥ 2/3x + 2

patriot [66]

Post the graph and I can help

6 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=4%E2%88%9216%C3%B74%2B4%C2%B2" id="TexFormula1" title="4−16÷4+4²" alt="4&min

neonofarm [45]

Answer:

16

Step-by-step explanation:

$4−16÷4+4² \\ \\ = 4 - \frac{16}{4} + 16 \\ \\ = 4 - 4 + 16 \\ \\ = 16$

8 0

3 years ago

A company has determined that 1% of its widgets are defective. If a customer received 2 widgets, what is the probability that th

Vsevolod [243]

Assume independence because there are probably a lot of widgets. 1/100 x 1/100 = 1/10,000

5 0

3 years ago

In 1989, Dutch ice skater Dries van Wijhe skated 200 km at an average speed of 35.27 km/h. How long was he skating?

PolarNik [594]

Divide
200 by 35.27
You get 5.67 hours

8 0

3 years ago

A rancher wishes to build a fence to enclose a rectangular pen having area 24 square yards. Along one side the fence is to be ma

Gnoma [55]

Answer:

The value is $C \approx \$76$

Step-by-step explanation:

From the question we are told that

The area of the rectangular pen is $A = 24 \ yard^2$

The cost of material used to make one side is $z = \$ 6$

The cost of material used to make the other sides is $r = \$ 3$

Now , the fence to be build around the rectangular pen has four sides, the first opposite sides are equal, let assume each of the to be x yard and the other opposite sides are also equal as well let assume of the to be y yard

So the cost is mathematically represented as

$C = zx + r (x + 2y )$

=> $C = 6x + 3(x + 2y)$

=> $C = 9x + 6y$

Now the area of the fence is mathematically represented as

$A = x* y = 24$

=> $y = \frac{24}{x}$

=> $C = 9x + 6[\frac{24}{x} ]$

=> $C = 9x + [\frac{144}{x} ]$

Now differentiating

$C' = 9 + 144* (-2) x^{-2}$

$C' = 9 - 288x^{-2}$

At minimum $C' = 0$

So

$9 - 288x^{-2} = 0$

$x^{-2} = 0.03125$

$x = \sqrt{\frac{1}{0.03125} }$

$x = 5.66$

Now substituting for x in the equation above to obtain minimum cost

$C = 9(5.66) + [\frac{144}{5.66} ]$

$C \approx \$76$

8 0

3 years ago