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Reptile [31]
2 years ago
14

1. What is the area of this tile? ina 6 in. 2 in.

Mathematics
2 answers:
satela [25.4K]2 years ago
5 0

Answer:u will kno3

Step-by-step explanation:6 in the side the top 2 the top

VLD [36.1K]2 years ago
5 0

Answer:

12 inches squared

Step-by-step explanation:

Area is length, which in this case is 6 inches, by width, which in this case is 2 inches.

L times W = A

6 times 2 = 12

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The standard form of the equation of a parabola is y = 7x2 + 14x + 4. What is the vertex form of the equation?
Drupady [299]
The vertex of <span>y = 7x2 + 14x + 4</span> is at (-1,-3) (see attachment)

6 0
3 years ago
10. Triangle A and triangle B are similar. The perimeter of triangle A is 15 m and the perimeter of
pentagon [3]

Answer:

2:1

Step-by-step explanation:

I think I'm not 100 percent sure

6 0
3 years ago
Assume that foot lengths of women are normally distributed with a mean of 9.6 in and a standard deviation of 0.5 in.a. Find the
Makovka662 [10]

Answer:

a) 78.81% probability that a randomly selected woman has a foot length less than 10.0 in.

b) 78.74% probability that a randomly selected woman has a foot length between 8.0 in and 10.0 in.

c) 2.28% probability that 25 women have foot lengths with a mean greater than 9.8 in.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, a large sample size can be approximated to a normal distribution with mean \mu and standard deviation \frac{\sigma}{\sqrt{n}}.

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 9.6, \sigma = 0.5.

a. Find the probability that a randomly selected woman has a foot length less than 10.0 in

This probability is the pvalue of Z when X = 10.

Z = \frac{X - \mu}{\sigma}

Z = \frac{10 - 9.6}{0.5}

Z = 0.8

Z = 0.8 has a pvalue of 0.7881.

So there is a 78.81% probability that a randomly selected woman has a foot length less than 10.0 in.

b. Find the probability that a randomly selected woman has a foot length between 8.0 in and 10.0 in.

This is the pvalue of Z when X = 10 subtracted by the pvalue of Z when X = 8.

When X = 10, Z has a pvalue of 0.7881.

For X = 8:

Z = \frac{X - \mu}{\sigma}

Z = \frac{8 - 9.6}{0.5}

Z = -3.2

Z = -3.2 has a pvalue of 0.0007.

So there is a 0.7881 - 0.0007 = 0.7874 = 78.74% probability that a randomly selected woman has a foot length between 8.0 in and 10.0 in.

c. Find the probability that 25 women have foot lengths with a mean greater than 9.8 in.

Now we have n = 25, s = \frac{0.5}{\sqrt{25}} = 0.1.

This probability is 1 subtracted by the pvalue of Z when X = 9.8. So:

Z = \frac{X - \mu}{s}

Z = \frac{9.8 - 9.6}{0.1}

Z = 2

Z = 2 has a pvalue of 0.9772.

There is a 1-0.9772 = 0.0228 = 2.28% probability that 25 women have foot lengths with a mean greater than 9.8 in.

5 0
3 years ago
Enter the slope-intercept equation of the line that has a slope of -5 and y-intercept (0,8)
Genrish500 [490]

Slope-intercept form is y = mx + b, where the variable m represents the slope of the line and the variable b represents the y-intercept. Because we are given these values, all we have to do is plug in the given values into the equation for their respective variables.

y = mx + b

y = -5x + 8

Therefore, your answer is y = -5x + 8.

Hope this helps!

5 0
3 years ago
What is the answer to 9m(m+7)+8m ?
GarryVolchara [31]
I hope this helps you

8 0
3 years ago
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