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anzhelika [568]
3 years ago
6

Please help me!!

Mathematics
1 answer:
Ratling [72]3 years ago
4 0

Answer:

E=1/2mv2, v/10./17

Step-by-step explanation:

<h2>i need brainlest <3</h2>
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Use the slope formula to determine the slope of the line that passes through the points R (1, 2) and S (5, 7)
Citrus2011 [14]
M = (y2-y1)/(x2 -x1)
m = (7 -2)/(5 - 1)
m = 5/4

answer: slope m = 5/4
4 0
3 years ago
I GIVEEEEE BRAINLILST
Pavel [41]

Answer:

73.5

Step-by-step explanation:

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8 0
2 years ago
Read 2 more answers
What is the slope of (-18,-20),(-18, -15)
Rzqust [24]

Answer:

Undefined.

Step-by-step explanation:

m =  \frac{rise}{run}

m =  \frac{ - 15 - ( - 20)}{ - 18 - (  -  18)}  \\ m =  \frac{ - 15 + 20}{ - 18 + 18}  \\ m =  \frac{5}{0}

The denominator is 0. Therefore, the slope is undefined.

4 0
3 years ago
Consider the following hypothesis test:
Gnom [1K]

Answer:

a. z=3.09. Yes, it can be concluded that the population mean is greater than 50.

b. z=1.24. No, it can not be concluded that the population mean is greater than 50.

c. z=2.22. Yes, it can be concluded that the population mean is greater than 50.

Step-by-step explanation:

We have a hypothesis test for the mean, with the hypothesis:

H_0: \mu\leq50\\\\H_a:\mu> 50

The sample size is n=55 and the population standard deviation is 6.

The significance level is 0.05.

We can calculate the standard error as:

\sigma_M=\dfrac{\sigma}{\sqrt{n}}=\dfrac{6}{\sqrt{55}}=0.809

For a significance level of 0.05, the critical value for z is zc=1.644. If the test statistic is bigger than 1.644, the null hypothesis is rejected.

a. If the sample mean is M=52.5, the test statistic is:

z=\dfrac{M-\mu}{\sigma_M}=\dfrac{52.5-50}{0.809}=\dfrac{2.5}{0.809}=3.09

The null hypothesis is rejected, as z>zc and falls in the rejection region.

b. If the sample mean is M=51, the test statistic is:

z=\dfrac{M-\mu}{\sigma_M}=\dfrac{51-50}{0.809}=\dfrac{1}{0.809}=1.24

The null hypothesis failed to be rejected, as z<zc and falls in the acceptance region.

c. If the sample mean is M=51.8, the test statistic is:

z=\dfrac{M-\mu}{\sigma_M}=\dfrac{51.8-50}{0.809}=\dfrac{1.8}{0.809}=2.22

The null hypothesis is rejected, as z>zc and falls in the rejection region.

8 0
3 years ago
11w+5w-1=65w-36<br> Ayuden poniendo tambien el procedimiento plis
nevsk [136]

Answer:

w=1.4

Step-by-step explanation:

11w+5w-1=65w-36

16w-1=65w-36

16w-65w= -36+1

-49w= -35

w= -35/-49

w= 1.4

4 0
3 years ago
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