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3 years ago

6

Does anyone know how to do this. will give first person brainliest!

2 answers:

zhannawk [14.2K]3 years ago

5 0

All you have to do is go around and answer questions and you get points I guess

Oduvanchick [21]3 years ago

3 0

Answer: First, you need to know that the x-axis is horizontal and y-axis is vertical and that x comes first in the bracket. Now, when reflecting over the x-axis, MN will go from (3, -1), (-3, -1) to (-3, -1), (3,-1). Again, JK will go from (-1, 1), (-3, 1) to (-1, -1), (-3,-1). For ABC, I am not sure and I will not give a wrong answer as I have not learned this. Sorry. But please give a brainliest so I can keep learning and post answers.

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Help asap plzz<br> -3x + 7 = -8

viva [34]

Answer:

x=5

Step-by-step explanation:

-3x+7=-8

Bring 7 to the other side, it becomes negative

-3x=-8-7

Signs are same on rhs so u add

-3x = -8+-7= -15

Bring -3 to the other side n divide

therefore,

x=-15/-3

= +5 (two negatives become positive)

Hope it helps!

8 0

3 years ago

Read 2 more answers

Write <br> 6 <br> 1<br> 2<br> as an improper fraction.

kompoz [17]

Answer:

13/2

Step-by-step explanation:

you do 6*2=12+1=13 which gives ya 13/2

you keep the denominator

3 0

4 years ago

The speeds of vehicles traveling on a highway are normally distributed with a population standard deviation of 7 miles per hour

True [87]

Answer: $(56.03\ ,63.97)$

Step-by-step explanation:

Given : The speeds of vehicles traveling on a highway are normally distributed .

Standard deviation: $\sigma: 7$

Since , sample size : $n=20$ , which is small sample (n<30) so the test applied here is a t-test.

Degree of freedom= $n-1=20-1=19$

Sample mean : $\overline{x}=60$

Level of significance : $1-\alpha:0.98$

Then , significance level : $\alpha: 1-0.98=0.02$

Using t-distribution table , Critical value : $\text{t-score}=t_{n-1, \alpha/2}= 2.539483$

The confidence interval for population mean is given by :-

$\overline{x}\pm t_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

$60\pm( 2.539483)\dfrac{7}{\sqrt{20}}\approx60\pm3.97=(56.03\ ,63.97)$

Hence, a 98% confidence interval for the population mean= $(56.03\ ,63.97)$

4 0

3 years ago

How would you multiply seconds times how many pages read? An example would be 49 seconds multiplied by 7 pages. Please Help ASAP

solmaris [256]

I think you would divide 7 by 49 whivh would be 7 seconds per page.

4 0

3 years ago

Nina sells 95% of her cookies at a bake sale. She baked 120 cookies. How many did she sell?

adoni [48]

Answer:

114 cookies

Step-by-step explanation:

120×0.95=114

7 0

3 years ago