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3 years ago

ASAP HELP PLEASE WILL MARK BRAINLIST

Mathematics

2 answers:

inn [45]3 years ago

7 0

Substitute 3 for wherever m is. Answer is 4

Andrew [12]3 years ago

3 0

The answer is 4 i believe

You might be interested in

Exhibit B In order to determine whether or not there is a significant difference between the hourly wages of two companies, two

ser-zykov [4K]

Answer: c. 3.01

Step-by-step explanation:

The test statistic for difference between two population mean (when population standard deviation is known) is given by :

$z=\dfrac{\overline{x}_1-\overline{x}_2}{\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}}$

, where $n_1$ = Size of first sample

$n_2$ = Size of second sample

$\overline{x}_1-\overline{x}_2$ = Difference between two sample mean.

$\sigma_1$ = standard deviation for population 1.

$\sigma_2$ = standard deviation for population 2.

As per given , we have

$n_1=80$

$n_2=60$

$\overline{x}_1=\$6.75$

$\overline{x}_2=\$6.25$

$\sigma_1=\$1$

$\sigma_2=\$0.95$

Substitute these values in formula , we get

$z=\dfrac{6.75-6.25}{\sqrt{\dfrac{(1)^2}{80}+\dfrac{(0.95)^2}{60}}}$

$z=\dfrac{0.50}{\sqrt{0.0275416666667}}$

$z=\dfrac{0.50}{0.165956821694}$

$z=3.0128318613\approx3.01$

Hence, the value of the test statistic is 3.01.

Hence, the correct option is c. 3.01 .

7 0

3 years ago

Kim drove k miles to see her family. Tran drove 3 times as far as Kim to get to his family's city, plus another 28 miles to get

balandron [24]

Answer:

$3k+28$ miles

Step-by-step explanation:

We are given that

Kim drove distance to see her family=k miles

We have to find the expression which represents the number of miles Tran drove.

According to question

3 times of k=3k

Now, adding 28 to 3k

Therefore, the expression is given by

3k+28

Hence, the expression which represents the number of miles Tran drove

$3k+28$ miles

8 0

3 years ago

Help! Willing to give brainliest

vovikov84 [41]

Answer : 4th option

A equation is given to us and we need to find out its graph from the options . The given equation is ,

→ y = -2x + 1

Comparing this equation to the slope intercept form of the line which is y = mx + c , where m is the slope and c is y intercept. We have ,

m = -2
c = 1

So the equation of the line will cut y axis at (0,1) and will have a negative slope .

Since the slope is negative , it will make an obtuse angle in anti clockwise direction with the x axis .

And the graph which satisfies the above conditions is in 4th option .

Hence the correct answer is 4th option .

I hope this helps.

4 0

2 years ago

7. Estimote the following percentages of 60. 10% = 25% = 50% = 20% =

Orlov [11]

Answer:

10% of 60 = 6

25% of 60 = 15

50% of 60 = 30

20% of 60 = 12

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

What is 4,173 in exponential form

Ket [755]

Step-by-step explanation:

$\underline{\begin{array}{c|c|c|c}4&1&7&3\end{array}}\\\begin{array}{c|c|c|c}4&0&0&0\\&1&0&0\\&&7&0\\&&&3\end{array}$

$4,173 = 4,000 + 100 + 70 + 3\\\\=4\times1,000+1\times100+7\times10+3\times1\\\\=4\times10^3+1\times10^2+7\times10^1+3\times10^0$

7 0

3 years ago