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3 years ago

Which one is right. please help will mark you brainliest please help !!

Mathematics

2 answers:

Alex73 [517]3 years ago

3 0

Answer:

The first one

Step-by-step explanation:

Sergio039 [100]3 years ago

3 0

Answer: D

Step-by-step explanation: I think

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The terminal side of an angle in standard position passes through P(15,-8). What is the value of sin e?

Ksenya-84 [330]

The answer is B on multiple choice

4 0

3 years ago

The standard deviation of a sample taken from population A is 17.6 for a sample of 25.

lawyer [7]

Answer:

The standard deviation of the sample mean differences is _5.23_

Step-by-step explanation:

We have a sample of a population A and a sample of a population B.

For the sample of population A, the standard deviation $\sigma_A$ is

$\sigma_A = 17.6$

The sample size $n_A$ is:

$n_A = 25$ .

For the sample of population B, the standard deviation $\sigma_B$ is

$\sigma_B = 21.2$

The sample size $n_B$ is:

$n_B = 30$ .

Then the standard deviation for the difference of means has the following form:

$\sigma=\sqrt{\frac{\sigma_A^2}{n_A}+\frac{\sigma_B^2}{n_B}}$

Finally

$\sigma=\sqrt{\frac{17.6^2}{25}+\frac{21.2^2}{30}}\\\\\sigma= 5.23$

7 0

4 years ago

Solve the system using substitution. 5x-y=75 3y=x

musickatia [10]

5(3y)-y=75 -> 15y-y=75 -> 14y= 75 -> y= 75/14

3(75/14)=x -> x= 225/14 and y= 75/14

I'm completely wrong but i tried

6 0

3 years ago

Please answer the question in the picture, much appreciated! Write it out

yan [13]

Answer:

sin Z = 3/5

Step-by-step explanation:

Tony needs to simplify the fraction:

sin Z = 12/20 = 3/5

8 0

3 years ago

before leaving to visit Mexico Levant traded 270 american dollars and received 3000 Mexican pesos when he returned from Mexico h

Verdich [7]

Levant traded 270 american dollars and received 3000 Mexican pesos. This means that:
1 Mexican peso = (270 x 1) / (3000) = 0.09$

Therefore,
100 pesos will be worth 100 x 0.09 = 9$

Based on this, he will receive 9$ when exchanging 100 pesos for dollars.

4 0

3 years ago

Read 2 more answers

Which one is right. please help will mark you brainliest please help !!​

Which one is right. please help will mark you brainliest please help !!