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kondor19780726 [428]
3 years ago
7

Triangle xyz is similar to triangle xvw. write the congruence statements that must be true.

Mathematics
2 answers:
Lunna [17]3 years ago
7 0

Answer:

∠ Y = ∠ V

∠ Z = ∠ W

\frac{XY}{XV} =\frac{YZ}{VW} =\frac{XZ}{XW}

Step-by-step explanation:

It is given that Δ XYZ is similar to Δ XVW.

Since corresponding angles of similar triangles are equal,

∠ X = ∠ X

∠ Y = ∠ V

∠ Z = ∠ W

Also, since corresponding sides of similar triangles are in proportionate,

\frac{XY}{XV} =\frac{YZ}{VW} =\frac{XZ}{XW}

tatuchka [14]3 years ago
6 0

Answer:

\triangle XYZ \sim \triangle XVW

Step-by-step explanation:

We are given the following information in the question:

\triangle XYZ \sim \triangle XVW

The, the above triangles enjoy the following properties:

1. Congruent angles

Corresponding angles of similar triangle are equal.

\angle{XYZ} = \angle{XVW}\\\angle{YZX} = \angle{VWX}\\\angle{ZXY} = \angle{WXV}

2 Corresponding sides are in proportion.

\displaystyle\frac{XY}{XV} = \frac{YZ}{VW} =\frac{XZ}{XW}

It may be noted that similar triangles are not same as congruent triangles. They are different.

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lidiya [134]

Answer:

Step-by-step explanation:

We are given that 30% of California residents have adequate earthquake supplies.

a) Ramon variable X denotes the number of the california residents that have adequate earthquake insurance

B) x can take value 1 ,2 ,3 ......

C)The distribution of random variable is geometric distribution with parameter p=0.3

The pmf of geometric distribution is

P(X=x)=0.3(1-0.3)^{x-1} , x=1,2,3...

D)P(X=1) or P(X=2)=P(X=1)+P(X=2)

P(X=1) or P(X=2)=0.3(1-0.3)^{1-1}+0.3(1-0.3)^{2-1}=0.51

E)

P(X \geq 3)=1-P(X

F)

E(X)=\frac{1}{p}

p is the resident who does not have adequate earthquake supplies.

p = 1-0.3 = 0.7

E(X)=\frac{1}{0.7}=1.42

G)E(X)=\frac{1}{q}=\frac{1}{0.3}=3.33

8 0
4 years ago
Please help!!
meriva

Answer:

hi

Step-by-step explanation:

lolol

4 0
3 years ago
A doctor is measuring the average height of male students at a large college. The doctor measures the heights, in inches, of a s
denpristay [2]

Answer:

For this case the  95% confidence interval is given (63.5 , 74.4) and we want to conclude about the result. For this case we can say that the true mean of heights for male students would be between 63.5 and 74.4. And the best answer would be:

b. The doctor can be 95% confident that the mean height of male students at the college is between 63.5 inches and 74.4 inches.

Step-by-step explanation:

Notation

\bar X represent the sample mean for the sample  

\mu population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size  

Solution to the problem

The confidence interval for the mean is given by the following formula:

\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}   (1)

In order to calculate the mean and the sample deviation we can use the following formulas:  

\bar X= \sum_{i=1}^n \frac{x_i}{n} (2)  

s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}} (3)  

In order to calculate the critical value t_{\alpha/2} we need to find first the degrees of freedom, given by:

df=n-1=40-1=39

For this case the  95% confidence interval is given (63.5 , 74.4) and we want to conclude about the result. For this case we can say that the true mean of heights for male students would be between 63.5 and 74.4. And the best answer would be:

b. The doctor can be 95% confident that the mean height of male students at the college is between 63.5 inches and 74.4 inches.

3 0
4 years ago
A mother gives birth to triplets. The individual weights of the babies at birth are 4 lb 2 oz, 4 lb 5 oz, and 3 lb 13 oz. Find t
viva [34]

Answer:

You mean just add them together?

Step-by-step explanation:

12.25 pounds

6 0
3 years ago
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An aquarium Is 8 feet long , 5feet wide , and 5.5 feet deep . What is the volume of the tank ?
Ivenika [448]

Answer:

220 ft^3

Step-by-step explanation:

Assuming a rectangular tank,

V = l*w*h

   = 8*5*5.5

   =220 ft^3

3 0
3 years ago
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