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3 years ago

Can anyone help with this problem?

Mathematics

1 answer:

Volgvan3 years ago

5 0

Answer: the answer D

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Solve for x and y (18 points!)

andreev551 [17]

Ok use photomath it’s way better for stuff like that

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3 years ago

2. The fifth term and eighth terms of a Gp are 80 and 640 respectively find

Softa [21]

Answer:

a values of r and a that the answer

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3 years ago

ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately no

dimaraw [331]

Answer: 5.37

Step-by-step explanation:

Let x = ACT scores.

Given: ACT scores have a mean of 20.8 and 9 percent of the scores are above 28. The scores have a distribution that is approximately normal.

i.e. P(X>28)=0.09 (i)

Now,

$P(X>28)=P(\dfrac{X-\mu}{\sigma}>\dfrac{28-20.8}{\sigma})\\\\= P(z>\dfrac{7.2}{\sigma})\ \ \ \ [z=\dfrac{X-\mu}{\sigma}]$ (ii)

One -tailed z value for p-value of 0.09 =1.3408 [By z-table]

From (i) and (ii)

$\dfrac{7.2}{\sigma}=1.3408\\\\\Rightarrow\ \sigma=\dfrac{7.2}{1.3408}\\\\\Rightarrow\ \sigma=5.37$

Hence, the standard deviation = 5.37

5 0

3 years ago

(3x+4)-(-8-2x) simplified

goldenfox [79]

Answer:

5x+12

Step-by-step explanation:

7 0

3 years ago

7.) The width of a vegetable garden is times its length. If the length of the garden is 73

Solnce55 [7]

Answer:

So, the length (L) = 7 3/4 ft = 31/4 (as an improper fraction)

the width (W) = (1/3)xL

So the width = 1/3 x (31/4) =

31/12 = 2 7/12 feet

Step-by-step explanation:

its up there

5 0

3 years ago