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Hitman42 [59]
4 years ago
8

Simplify using long division. (Remember to show all your work.)

Mathematics
1 answer:
Leokris [45]4 years ago
6 0
.        8x²+20x
.      ______________                       first, try to solve the first one... 
x-3 ) 8x³ - 4x² -36x -72                      so mult x AND -3 by 8x²
.       8x³ -24x²                                     (remember it is substract not add)
------------------------------------       
.                20x²-36x-72                   Now try to solve the first one again..
.                20x²-60x
------------------------------------
                          24x-72                  Now it is simplified

24x=72
x=3      answer is 3 

Hope this helps! Please give me the Brainliest answer if you like it! If you have further questions, you can leave a comment or add me as a friend!

 
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Answer:

70

Step-by-step explanation:

20 km times 3 plus 10 km

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4 years ago
Write an equation of the direct variation (the line has a y-intercept of (0,0)) that includes the point (3,18).
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Step-by-step explanation:

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3 years ago
Pleaseeee i will mark brainlesttttt<br> solve this system of equations <br> 12x−15y=14 8x−15y=6
Sphinxa [80]

Answer:

x = 2 and  y = \frac{2}{3}

Step-by-step explanation:

To solve this system of equation, we will follow the steps below;

We will use both elimination and substitution method to solve this system of equations

12x−15y=14 ------------------------------------------------------------------------(1)

8x−15y=6 --------------------------------------------------------------------------(2)

subtract equation (2) from equation (1)

(By doing that the y  variable will be eliminated)

4x = 8

Divide both-side of the equation by 4

4x/4 = 8/4

x = 2

Substitute x =2 into equation (2) and then solve for y

8x−15y=6

8(2)−15y=6

16 - 15y = 6

subtract 16 from both-side of the equation

16 - 16- 15y = 6-16

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Divide both-side of the equation by -15

-15y/-15  = -10/-15

y = \frac{2}{3}

x = 2 and  y = \frac{2}{3}

3 0
3 years ago
A shopkeeper sold a dressing table for 7512.75 at a profit of 19*1/4% What was the cost price.​
Katarina [22]
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3 years ago
Is the average grade of an English class rose from 70 to 85 what is the approximate percent increase
tia_tia [17]

The approximate percent increase in the average grade is 21.43%.

<h3>What is the percentage increase?</h3>

Percentage is a measure of frequency that expresses a number as a value out of hundred. The sign used to denote percentage is%.

Percentage increase = (new grade / initial grade) - 1

(85 / 70) - 1 = 0.2143 = 21.43%

To learn more about percentages, please check: brainly.com/question/25764815

#SPJ1

5 0
3 years ago
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