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4 years ago

I’m stuck on this can someone finish the rest plz ?

Mathematics

1 answer:

Keith_Richards [23]4 years ago

4 0

Answer:

-6

Step-by-step explanation:

The equation is:

y-y1= m (x-x1)

The first point is:

(-6, 24)

Then the equation:

y-24= -5 (x-(-6))

<u>-6 replaces ? mark</u>

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Solve for x, and refer to the attached image.

AVprozaik [17]

Answer:

x=8

Step-by-step explanation:

7+5x

so basically what you have to do is take the 7 and subtract from both sides

so like this: 7-7 is 0 so that cancels then 47-7 is 40

then you take 5x and divide 40 by 5

so x=8

hope this helped!

4 0

3 years ago

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population

postnew [5]

Answer:

We have been given confidence interval 95%, mean 20 , data set 30 and standard deviation 3.

We will use the formula: $mean\pm \frac{\sigma}{\sqrt{n}}\cdot (z-score)$

Here, $mean=20,\sigma=3,n=30,z-score=1.96$

Z-score value at 95% confidence interval is 1.96

On substituting the values in the formula to plug the values:

$20\pm\frac{3}{\sqrt{30}}\cdot (1.96)$

Now, we have a formula for marginal error: $z\cdot \frac{\sigma}{\sqrt{n}}$

Marginal error means your answer will be within that percentage only.

Say you have 3% marginal means your value will be within 3% real population 95% of the time.

7 0

4 years ago

The prices for a video game at 5 different stores are 39.99, 44.99, 29.99, 35.99, and 31.99. What is the mode(s) of the data

Marianna [84]

No mode. There are no two or more of the same price in the given situation.

8 0

3 years ago

What is the slope intercept of a line perpendicular to the line y=2x+3 with the point (-2,-4)

olchik [2.2K]

Answer:

y = - $\frac{1}{2}$ x - 5

Step-by-step explanation:

the equation of a line in slope-intercept form is

y = mx + c ( m is the slope and c the y-intercept )

y = 2x + 3 is in this form with slope m = 2

given a line with slope m then the slope of a line perpendicular to it is

$m_{perpendicular}$ = - $\frac{1}{m}$ = - $\frac{1}{2}$

y = - $\frac{1}{2}$ x + c ← is the partial equation

To find c substitute (- 2, - 4) into the partial equation

- 4 = 1 + c ⇒ c = - 4 - 1 = - 5

y = - $\frac{1}{2}$ x - 5 ← equation of perpendicular line

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3 years ago

The equation of a line is 5x + 10y = 15. Which if the following points lines on the line? (–3, 0) (–1, 2) (1, –2) (0, 3) The slo

Oxana [17]

Answer:6,6

Step-by-step explanation:

Slope formula

6 0

3 years ago

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