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3 years ago

10

What is the value of X when solving the equation -2x+(-8)=2x+8

1 answer:

Cloud [144]3 years ago

5 0

Answer: X=-4

Step-by-step explanation:

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Is 3x+4y=7 linear or nonlinear

Sloan [31]

Linear. It's in the form C= ax + by, so you back solve to get into the form you know is linear (y= mx + b). So using SADMEP (opposite of Pemdas) we can decide which order to solve for "Y=" in. 4y =7-3x. Y=((7-3X)/4). Y= 7/4 -3/4x. Y=-3/4x +7/4. Which is linear

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4 years ago

I really need help here ASAP

AlexFokin [52]

Answer:

D. $x=\frac{-4-\sqrt{31}}{3}$ or $x=\frac{-4+\sqrt{31}}{3}$

Step-by-step explanation:

The given equation is:

$3x^2+8x=5$

Divide through by 3;

$x^2+\frac{8}{3}x=\frac{5}{3}$

Add the square of half the coefficient of x to both sides.

$x^2+\frac{8}{3}x+(\frac{4}{3})^2=\frac{5}{3}++(\frac{4}{3})^2$

$x^2+\frac{8}{3}x+\frac{16}{9}=\frac{5}{3}+\frac{16}{9}$

The left hand side is now a perfect square:

$(x+\frac{4}{3})^2=\frac{31}{9}$

Take square root

$x+\frac{4}{3}=\pm \sqrt{ \frac{31}{9}}$

$x=-\frac{4}{3}\pm \sqrt{ \frac{31}{9}}$

$x=-\frac{4}{3}\pm \frac{\sqrt{31}}{3}$

D. $x=\frac{-4-\sqrt{31}}{3}$ or $x=\frac{-4+\sqrt{31}}{3}$

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3 years ago

What is the product in lowest terms ? 1/6•5/7

Tomtit [17]

D. 5/42 hope this helped!!

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3 years ago

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1) find the Least Common Multiple of 12 and 18

Alekssandra [29.7K]

Answer:

36

Step-by-step explanation:

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3 years ago

Simplify<br> 8- 2 (6 - 4 : (9 —7)]

Phantasy [73]

8-2(6-4:2)
8-2(6-2)
8-2*4
8-8=0

4 0

3 years ago

Read 2 more answers