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slamgirl [31]
3 years ago
9

What is the slope of the line that passes through the points (-3,1) and (7,-14)

Mathematics
1 answer:
Katyanochek1 [597]3 years ago
5 0

Answer:

-  \frac{3}{2}

Step-by-step explanation:

\boxed{gradient =  \frac{y1 - y2}{x1 - x2} }

Using the formula above,

slope of line

=  \frac{1 - ( - 14)}{ - 3 - 7}  \\  =  \frac{1 + 14}{ - 10}  \\  =  \frac{15}{ - 10}  \\  =  -  \frac{3}{2}

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Solve -3(-8b+7)=3(2b-1)
nekit [7.7K]

Answer: b=1

Step-by-step explanation:

Given the equation -3(-8b+7)=3(2b-1) you need to solve for the variable "b".

You need to apply Distributive property on both sides of the equation:

-3(-8b+7)=3(2b-1)\\\\24b-21=6b-3

Now you need to add 21 to both sides of the equation:

24b-21+21=6b-3+21\\\\24b=6b+18

Subtract 6b from both sides:

24b-6b=6b+18-6b\\\\18b=18

And finally, you can divide both sides of the equation by 18:

\frac{18b}{18}=\frac{18}{18}\\\\b=1

4 0
3 years ago
Read 2 more answers
6 twentieth 2 eights=
Fynjy0 [20]
Isnt it 2.5 and ur welcome
5 0
3 years ago
What process do you use to find the percent change of a quantity?
Sever21 [200]
<span><u><em>First, we need to get the amount of change:</em></u>
The amount of change can either be an increase or a decrease.
It can be calculated as follows:
amount of change = </span>\frac{"new"value - "old"value}{"old" value}
<span>
If the amount of change is positive, then it is an increase
If the amount of change is negative, then it is a decrease

<u><em>Then, we need to convert this amount into a percentage:</em></u>
Changing the amount into a percentage can simply be done by multiplying this amount by 100
This means that:
% of change = amount of change * 100

<u><em>Combining the two steps:</em></u>
% of change = </span>\frac{"new"value - "old"value}{"old" value}<span> * 100

<u>Examples:</u>
The original price of a certain product was $10. It then became $12. Find the % of increase.
% of change = </span>\frac{12-10}{10} * 100<span> = 20%
This means that the price increased by 20%

The temperature decreased from 25 degrees to 20 degrees. Find the percentage of decrease.
% of decrease = </span>\frac{20-25}{25} * 100<span> = -20%
This means that the temperature decreased by 20%

Hope this helps :)</span>
7 0
3 years ago
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What is the solution of -2x = -16
Vilka [71]
Divide both sides by -2

two negatives make a positive and that's true so x = 16/2 so divide it

x = 8 because 2 x 8 = 16 and 2/16 = 8 so true.

Answer: x = 8.
7 0
4 years ago
The ratio of pages read to minutes for Hang is 5:8. Select all the people who have a greater ratio of pages to read to minutes t
Serhud [2]

Answer:

d or e lulu

Step-by-step explanation:

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3 years ago
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