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1 year ago

PLEASE HEPP IM STUCK

Mathematics

1 answer:

Ann [662]1 year ago

8 0

Answer:

m = -4

Step-by-step explanation:

We are given that a line intersects the points (-2, 9) and (3, -11).

We want to write the slope of this line.

The slope (m) can be found using the formula $\frac{y_2-y_1}{x_2-x_1}$ , where $(x_1, y_1)$ and $(x_2, y_2)$ are points.

Even though we have everything we need to calculate the slope, let's label the values of the points to avoid any confusion & mistakes.

$x_1=-2\\y_1=9\\x_2=3\\y_2=-11$

Now substitute these values into the formula (remember that the formula has subtraction).

m= $\frac{y_2-y_1}{x_2-x_1}$

m= $\frac{-11-9}{3--2}$

Simplify.

m= $\frac{-11-9}{3+2}$

Subtract the values on top.

m= $\frac{-20}{3+2}$

Now add the values on the bottom together.

m= $\frac{-20}{5}$

Now divide -20 by 5.

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BaLLatris [955]

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3 years ago

Alena had 4 packs of gum with 6 pieces of gum in each pack. Hugh had 3 packs of gum with 5 pieces in each. Alena and Hugh have 1

s2008m [1.1K]

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3 years ago

Read 2 more answers

Evaluate the expression and enter your answer below. 4•3+13-3^2

Pepsi [2]

If I’m not mistaken, 16

3 0

3 years ago

Find the slope and y-intercept for this table.

labwork [276]

Answer:

See below:

Step-by-step explanation:

To find the slope, we use the following formula:

$\frac{y_{2} - y_{1} }{x_{2} - x_{1} }$

For this case, we can use (6,60) as the first set of points.

We can use (4,70) as the second set of points.

Now, we can use the formula, 70-60 is for the top of the fraction (10)

We can do 4-6 to find the bottom, which is (-2)

Now, if we add the fraction back we get -> 10/-2 which is -5 for slope!

To find out the y intercept, it in simple words is "What is y when x is 0?".

We can do that by using the slope intercept formula: $y=mx+b$ .

Once we insert our slope which is -2 we get: $y=-2x+b$

We can now substitute a point, lets use (6,60) so we can find out b.

We now get the equation: $60=-5(6)+b$ .

If we solve for that we get 90!

Once we input that, we get, $y=-5x+90$

Now we put in x as 0 and we get our y intercept as 90!

If this answer helped, consider marking as brainliest!!

8 0

3 years ago

The Quick Change Oil Company has a number of outlets in the metropolitan Seattle area. The daily number of oil changes at the Oa

Rashid [163]

Answer:

5 classes.

Step-by-step explanation:

You can use the $2^k$ rule to determine the number of classes for a frequency distribution.

The $2^k$ rule says that $2^k\geq n$ where

$k$ is the number of classes

$n$ is the number of the data points

We know that the number of data points is $n$ = 20.

Next, we start searching for $k$ so that we can get a number 2 to the $k$ that is larger that the number of data points.

$2^4=16\\2^5=32$

This suggests that you should use 5 classes.

8 0

3 years ago