State domain and range for following graph

If JM = 5x – 8 and LM = 2x – 6, which expression represents JL?

Helga [31]

Answer:

5x-8=2x-6

Step-by-step explanation:

It’s a property but I forgot which one.

6 0

3 years ago

Why is point A equal to -0.5?

Serggg [28]

Because it is closer to 0 and -1

4 0

4 years ago

Which of the following statements have the same result? Explain each step in solving each one.

LiRa [457]

f(x) = 3x +2

f(2) = 3(2) + 2 = 8

Now

f(x) = (2x -7) / 3

let f(x) = y and f(y) = x;

y = (2x -7) / 3

x = (3y + 7) / 2

So

f(y) = (3y + 7) / 2

this f(y) is the inverse of f(x); hence

f^-1 (x) = (3x + 7) / 2

Now f^-1(3) = (9+7) / 2 = 8

For the third and last part,

2y + 14 = 4y – 2

2y = 16

y = 8

<span>Hence all the three parts gives the same results.</span>

7 0

4 years ago

A 95% confidence interval for a population mean is determined to be 100 to 120. If the confidence coefficient is reduced to 0.90

laiz [17]

Answer:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The confidence interval for this case would be:

$100 \leq \mu \leq 120$

And we want to know what happens with the interval if we reduce the confidence level to 90% and for this case we will get a narrower interval since the critical value $t_{\alpha/2}$ would be lower. So then the best option would be:

a. becomes narrower

Step-by-step explanation:

Notation

$\bar X$ represent the sample mean for the sample

$\mu$ population mean

s represent the sample standard deviation

n represent the sample size

Solution

The confidence interval for the mean is given by the following formula:

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

The confidence interval for this case would be:

$100 \leq \mu \leq 120$

And we want to know what happens with the interval if we reduce the confidence level to 90% and for this case we will get a narrower interval since the critical value $t_{\alpha/2}$ would be lower. So then the best option would be:

a. becomes narrower

8 0

4 years ago

Does the equation x^2 -4x + y^2 = -3 intersect the x-axis?

frutty [35]

We can rewrite the equation into:
(x-2)^2+y^2=1

Therefore the circle's centre is that (2,0). Since the circle's centre lies on the x axis, the circle must intersect the x-axis.

5 0

4 years ago

Read 2 more answers