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Lana71 [14]
3 years ago
14

Two functions, A and B, are described as follows: Function A y = 8x + 3 Function B The slope is 1 and the y-intercept is 4. How

much more is the slope of function A than the slope of function B?
Mathematics
1 answer:
____ [38]3 years ago
8 0
1. Subtract 3 from both sides:
y - 3 = 8x
2. Divide both sides by 8:
y - 3/8 = x
3. Switch sides:
x = y - 3/8
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ICE Princess25 [194]
Subtract 7 from each side
so it now it should look like this

4y<24

Now divide each side by 4
y<6

y<6 is the answer
7 0
3 years ago
Help please!! 20 point question!! Which equation represents the general form a circle with a center at (-2, -3) and a diameter o
Ivan

Answer:

it is c

Step-by-step explanation:

8 0
3 years ago
Two independent samples of sizes 20 and 30 are randomly selected from two normally distributed populations. Assume that the popu
aleksley [76]

Answer:

b. Student-t with 48 degrees of freedom

Step-by-step explanation:

For this case we need to use a Two Sample t Test: equal variances.

Assumptions

When running a two-sample equal-variance t-test, the basic assumptions are "that the distributions of the two  populations are normal, and that the variances of the two distributions are the same".

Let \bar x and \bar y be the sample means of two sets of data of size n_x and n_y respectively. We assume that the distribution's of x and y are:

x \sim N(\mu_x ,\sigma_x =\sigma)

y \sim N(\mu_y ,\sigma_y=\sigma)

Both are normally distributed but without the variance equal for both populations.

The system of hypothesis can be:

Null hypothesis: \mu_x =\mu_y

Alternative hypothesis: \mu_x \neq \mu_y

We can define the following random variable:

t=\frac{(\bar x -\bar y)-(\mu_x -\mu_y)}{s\sqrt{\frac{1}{n_x}+\frac{1}{n_y}}}

The random variable t is distributed t \sim t_{n_x +n_y -2}, with the degrees of freedom df=n_x +n_y -2= 20+30-2=48

And the pooled variance can be founded with the following formula:

s^2=\frac{(n_x -1)s_x^2 +(n_y-1)s_y^2}{n_x +n_y -2}

So on this case the best answer would be :

b. Student-t with 48 degrees of freedom

5 0
3 years ago
What is the sequence in 5, 30, 180
BARSIC [14]
You are multiplying it by 6 after every comma so if 180 will be multiplied by 6 the next term after comma will be 1080
7 0
4 years ago
Help<br> Solve for x in the diagram below.
Harman [31]

Answer:

X=10

Step-by-step explanation:

You can subtract 180 by 110 to get 70. Then you can do 8x+30+70=180
Add 30+70 to get 100
Subtract 100 to 180 to get 80.
8x=80
You divide 8 from both sides which leaves you with x=10.

4 0
2 years ago
Read 2 more answers
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