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3 years ago

Line SU intersects line TV at point R. What is the value of x in degrees?

Mathematics

1 answer:

yawa3891 [41]3 years ago

5 0

30 degrees 75+15=90 then divide 90 by 3 to get 30

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Please help me I’m stuck! :(

soldier1979 [14.2K]

Answer:

7 to the 8th power

Step-by-step explanation:

that means A

7 0

3 years ago

chang has 2 shirts: a white one and a black one. He also has 2 pair of pants, one blue and one tan. what is the probability if c

adell [148]

There are 4 possible outcomes

Shirt Pant
W Bl
W T
B Bl
B T

Of those we are interested in on event. which is WT

Then the probability is 1/4 = 0.25

7 0

4 years ago

Consider the following data to determine whether there is a significant difference between the values of Group 1 and Group 2. Le

cestrela7 [59]

Using the t-distribution, it is found that since the p-value of the test is 0.72 > 0.05, there is not significant difference between the values of each group.

At the null hypothesis, we test if the groups have the same values, that is, the subtraction of their means is 0:

$H_0: \mu_2 - \mu_1 = 0$

At the alternative hypothesis, we test if the groups have different values, that is, the subtraction of their means is different of 0:

$H_1: \mu_2 - \mu_1 \neq 0$

First, we have to find the mean and the standard deviation for both samples, hence, using a calculator:

$\mu_1 = 18.75, \sigma_1 = 6.2507, \mu_2 = 19.75, \sigma_2 = 4.2678$

The standard errors are:

$s_1 = \frac{\sigma_1}{\sqrt{n_1}} = \frac{6.2507}{\sqrt{8}} = 2.21$

$s_2 = \frac{\sigma_2}{\sqrt{n_2}} = \frac{4.2678}{\sqrt{8}} = 1.5089$

For the distribution of differences, we have that:

$\overline{x} = \mu_2 - \mu_1 = 19.75 - 18.75 = 1$

$s = \sqrt{s_1^2 + s_2^2} = \sqrt{2.21^2 + 1.5089^2} = 2.676$

We have the standard deviation for the samples, hence, the t-distribution is used. The test statistic is given by:

$t = \frac{\overline{x} - \mu}{s}$

In which $\mu$ is the value tested at the null hypothesis, which is 0 for this problem. Hence, the value of the test statistic is:

$t = \frac{\overline{x} - \mu}{s}$

$t = \frac{1 - 0}{2.676}$

$t = 0.37$

To find the p-value, we have a two-tailed test, as we test if the means are different from a value, with t = 0.37 and 8 + 8 - 2 = 14 df.

Using a t-distribution calculator, this p-value is of 0.72.

Since the p-value of the test is 0.72 > 0.05, there is not significant difference between the values of each group.

A similar problem is given at brainly.com/question/15682365

3 0

2 years ago

Please answer this ty

yarga [219]

I'm not gonna answer all 8... which question?

3 0

3 years ago

Find the zeros using the quadratic formula x^2-5x+4=y.

Ber [7]

Answer:

(x-4) (x-1)

Step-by-step explanation:

X-4=0

x=4

X-1=0

X=1

8 0

3 years ago