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3 years ago

What the answer to estimate 8,288.4x43.

Mathematics

1 answer:

tiny-mole [99]3 years ago

8 0

356401.2, dont you have a calculator to do this?

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What is 3/4 + 2/5 A. 23/30 b. 40/50 c.1 3/20 D. 1/50

natta225 [31]

It would be A. 23/30 if it was not simplified but if you need it to be simplified it would be C. 1 3/20

Your welcome

3 0

3 years ago

The heights of women in the USA are normally distributed with a mean of 64 inches and a standard deviation of 3 inches.

Rainbow [258]

Answer:

(a) 0.2061

(b) 0.2514

Step-by-step explanation:

Let X denote the heights of women in the USA.

It is provided that X follows a normal distribution with a mean of 64 inches and a standard deviation of 3 inches.

(a)

Compute the probability that the sample mean is greater than 63 inches as follows:

$P(\bar X>63)=P(\frac{\bar X-\mu}{\sigma/\sqrt{n}}>\frac{63-64}{3/\sqrt{6}})\\\\=P(Z>-0.82)\\\\=P(Z$

Thus, the probability that the sample mean is greater than 63 inches is 0.2061.

(b)

Compute the probability that a randomly selected woman is taller than 66 inches as follows:

$P(X>66)=P(\frac{X-\mu}{\sigma}>\frac{66-64}{3})\\\\=P(Z>0.67)\\\\=1-P(Z$

Thus, the probability that a randomly selected woman is taller than 66 inches is 0.2514.

(c)

Compute the probability that the mean height of a random sample of 100 women is greater than 66 inches as follows:

$P(\bar X>66)=P(\frac{\bar X-\mu}{\sigma/\sqrt{n}}>\frac{66-64}{3/\sqrt{100}})\\\\=P(Z>6.67)\\\\\ =0$

Thus, the probability that the mean height of a random sample of 100 women is greater than 66 inches is 0.

8 0

3 years ago

Hurry plz brainly is cool

astraxan [27]

Answer:

Step-by-step explanation:

3 0

3 years ago

I neeeeeeed Help please!

pochemuha

Answer:

i ask your teacher

Step-by-step explanation:

ask your teacher instead of asking for answers

4 0

3 years ago

Find the area of a circle with diameter 18 yd.

larisa [96]

Answer:

Area of the circle is 254.34 yd²

Step-by-step explanation:

Given:

Diameter of circle = 18 yd
π = 3.14

To Find:

Area of circle.

Solution:

Diameter = 18 yd
Radius = 18/2 = 9 yd

We know that,

$\: \: \: \: \dashrightarrow \: \: \: \: \: {\underline{\boxed{\sf{Area \: of \: circle = \pi r^2}}}} \\ \\$

Substituting the required values,

$\\$

$\: \: \: \: \dashrightarrow \: \: \: \: \: \sf Area_{(circle)} = 3.14 \times {(9)}^{2} \\ \\$

$\: \: \: \: \dashrightarrow \: \: \: \: \: \sf Area_{(circle)} = 3.14 \times 81 \\ \\$

$\: \: \: \: \dashrightarrow { \: \: \: \: \: \sf Area_{(circle)} = 254.34 \: {yd}^{2}} \\ \\$

Hence,

Area of the circle is 254.34 yd²

6 0

2 years ago

Read 2 more answers