3 years ago

Can anyone answer 2 through 4 for me ?

Mathematics

1 answer:

Andreyy893 years ago

4 0

I know the answer for two.All you do is 9 times 3 times 2

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Two mechanics worked on a car. The first mechanic worked for 5 hours, and the second mechanic worked for 15 hours. Together they

Wewaii [24]

X = rate of mechanic who worked 5 hours

y = rate of mechanic who worked 15 hours

x + y = 200
5x + 15y = 1950

you find the first variable in one of the equations, then subsitute the result into the other equation. your answer would be:

the mechanic who worked for 5 hours charged $105 per hour, the one who worked 15 hours charged $95 per hour.

hope this helps :)

3 0

3 years ago

The greatest common factor of 18 and 42 is: <br> 02<br> 6<br> 09<br> 18

Alex Ar [27]

Answer:

Step-by-step explanation:

We can obtain the greatest common factor by listing the factors of the 2 numbers, that is

Factors of 18 are 1, 2, 3, 6, 9, 18

Factors of 42 are 1, 2, 3, 6, 7, 14, 21, 42

The common factors are 1, 2, 3, 6

The greatest common factor is 6

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3 years ago

whether the distribution of the mean of a large number of independent, identically distributed variables. true or false

san4es73 [151]

Answer:

The statement is false

Step-by-step explanation:

Given

See comment for complete statement

Required

Is the statement true or false

From central limit theorem, we understand that a distribution is approximately normal if the distribution takes a sample considered to be large enough from the population.

Also, the mean and the standard deviation are known.

However, the given statement implies that the distribution will be normal depending on an underlying distribution; this is false.

6 0

3 years ago

Question 15 (1 point)

insens350 [35]

The inver of given function will be (1,-3).

7 0

3 years ago

Find the exact value of tan -75

anyanavicka [17]

Answer:

-2 + $\sqrt{3}$

Step-by-step explanation:

3 0

3 years ago