All categories

3 years ago

Will give u a crown

Mathematics

1 answer:

alina1380 [7]3 years ago

3 0

Answer:

$E=\frac{mv^2}{2}$

Step-by-step explanation:

$m=\frac{2E}{v^{2} }$

Multiply $v^2$ to both sides:

$m*v^2=\frac{2E}{v^{2} } *v^2$

$mv^2=2E$

Switch sides:

$2E=mv^2$

Divide both sides by 2:

$E=\frac{mv^2}{2}$

You might be interested in

What is the area for 10 and 6 1/2

schepotkina [342]

Answer:

65 units squared

Step-by-step explanation:

Why:area is base length times width. Considering what you gave me, 10 * 6.5 =65

6 0

3 years ago

Solve 2x^2+x=15.!!!!

larisa86 [58]

Isolate the variable by dividing each side by factors that dont contain variables

Answer: x=3

8 0

3 years ago

78 round off to the nearest<br> ten

Alika [10]

Answer:

Step-by-step explanation:

6 0

2 years ago

Three out of every five cookies on the cookie treat our oatmeal raisin cookies if there are 45 cookies on the tray predict how m

snow_lady [41]

Answer:

45 divided by 3 equal 15

Step-by-step explanation:

45 Divided by 3 equal 15

4 0

3 years ago

The Genetics & IVF Institute conducted a clinical trial of the YSORT method designed to increase the probability of conceivi

Reika [66]

Answer: The test statistic needed to test this claim= 10.92

Step-by-step explanation:

We know that the probability of giving birth to a boy : p= 0.5

i..e The population proportion of giving birth to a boy = 0.5

As per given , we have

Null hypothesis : $H_0: p\leq0.5$

Alternative hypothesis : $H_a: p>0.5$

Since $H_a$ is right-tailed , so the hypothesis test is a right-tailed z-test.

Also, it is given that , the sample size : n= 291

Sample proportion: $\hat{p}=\dfrac{239}{291}\approx0.82$

Test statistic : $z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$ , where n is sample size , $\hat{p}$ is sample proportion and p is the population proportion.

$\Rightarrow\ z=\dfrac{0.82-0.5}{\sqrt{\dfrac{0.5(1-0.5)}{291}}}\approx10.92$

i.e. the test statistic needed to test this claim= 10.92

Critical value ( one-tailed) for 0.01 significance level = $z_{0.01}=2.326$

Decision : Since Test statistic value (10.92)> Critical value (2.326), so we reject the null hypothesis .

[When test statistic value is greater than the critical value , then we reject the null hypothesis.]

Thus , we concluded that we have enough evidence at 0.01 significance level to support the claim that the YSORT method is effective in increasing the likelihood that a baby will be a boy.

7 0

3 years ago