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Ahat [919]
2 years ago
10

Х 3х+8 Find the value of x

Mathematics
2 answers:
trapecia [35]2 years ago
4 0

Answer:

x=2\frac{2}{3}

Step-by-step explanation:

divide both size by 3

⇒\frac{3x}{3}=\frac{8}{3}

3 will cancel 3x then x will stand on it own

x=\frac{8}{3}

3 will divide 8

x=2\frac{2}{3}

joja [24]2 years ago
3 0
The answer is -8/3. first you set it equal to zero, subtract 8 from both sides you get 3x=-8, divide both sides by 3 and you get -8/3
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Jennifer had a 7/8- foot board. She cut off a 1/4 foot piece that was for a project. In feet, how much of the board was left
Tems11 [23]

Answer: There was 5/8 of a foot of board left.

Step-by-step explanation:

Step 1. We need to subtract 1/4 from 7/8. To do this make it where both fractions have the same denominator.

Step 2. The easiest way to do this is to multiply 1/4 by 2.

1/4*2/2=2/8.

Step 3. Now all you got to do is subtract 2/8 from 7/8.

7/8-2/8= 5/8.

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VashaNatasha [74]

Answer:

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3 years ago
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Aliun [14]
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7 0
3 years ago
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Pliss help its 15 ponts
Viefleur [7K]

Answer:6x+36, 5x+5, 10x-9

Step-by-step explanation:

5 0
3 years ago
If you can, please leave an explanation so I can learn how to do it rathe than just copying
castortr0y [4]

Answer:

Point-Slope: y+1=-5/7(x-5)

Slope Intercept: y=-5/7x+ 2 4/7

Standard: -5x+7y=18

Step-by-step explanation:

<u>Slope: -5/7</u>

Point slope is when the equation is in y-y1=m(x-x1) form.

I used the point (5,-1) but it really <u>doesn't matter</u> which one

Substitute it into (x1,y1)

y--1=-5/7(x-5)

y+1=-5/7(x-5) **2 minus signs is equal to 1 plus sign**

Slope-intercept is when the equation is in y=mx+b form.

y=-5/7x+b

To solve for b, plug in one of the points (again, I choose to use (5,-1)

(-1)=-5/7(5)+b

-1=-25/7+b is equal to asking -1=-3 4/7+b

b=2 4/7

Standard form is when it is in Ax+By=C

We'll covert from slope intercept to standard: y=-5/7+ 2 4/7

y=-5/7x+ 2 4/7 is the same as y=(-5/7x+ 18/7)

7y=5x+18 **Multiply both sides by 7, the common denominators**

-5x+7y=18 **Subtract 5x from both sides**

<em>Sorry it took it while to get everything down but I hope this helps~</em>

6 0
2 years ago
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