Please help simplify . thank you

Mathematics

1 answer:

MrMuchimi3 years ago

8 0

I would try a but maybe wait for one more response because I got squared after x and 5x

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5. Solve using any method.<br> y = -x + 8<br> y=x+4

vlada-n [284]

Answer:

Step-by-step explanation:

$\bold{ELIMINATION\ METHOD}\\\\\left\{\begin{array}{ccc}y=-x+8\\y=x+4&\TEXT{change the signs}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}y=-x+8\\-y=-x-4\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad0=-2x+4\qquad\text{add}\ 2x\ \text{to both sides}\\.\qquad2x=4\qquad\text{divide both sides by 2}\\.\qquad\boxed{x=2}\\\\\text{Put it to the second equation}\\y=2+4\\\boxed{y=6}$

$\bold{SUBSTITUTION\ METHOD}\\\\\left\{\begin{array}{ccc}y=-x+8&(1)\\y=x+4&(2)\end{array}\right\\\\\text{Substitute (1) to (2)}\\\\-x+8=x+4\qquad\text{subtract 8 from both sides}\\-x=x-4\qquad\text{subtract}\ x\ \text{from both sides}\\-x-x=-4\\-2x=-4\qquad\text{divide both sides by (-2)}\\\boxed{x=2}\\\\\text{Put it to the second equation}\\y=2+4\\\boxed{y=6}$

7 0

3 years ago

Please help I need today

Serga [27]

Answer:

x = 62

Step-by-step explanation:

X and 62 are vertical angles and vertical angles are equal.

x = 62

3 0

2 years ago

If a spider can move 1/2 of a mile every hour, then how many hours would it take for a

SVETLANKA909090 [29]

Answer:

Step-by-step explanation:

1/2x4=2

8 0

2 years ago

Love u frens :><br> eeeeeeeeeeeeeeeeeeeee

tatuchka [14]

Answer:

12/7

Step-by-step explanation:

1 x 7= 7, then add 5 because of the denominator. 12/7

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2 years ago

How do I solve this problem w

Helga [31]

You definitely know how to find the area of a rectangle ... length times width. Right ? Well, write down the area of each rectangle, and then add up the 4 areas (using + signs). Hint: Each little rectangle on the right has an area of x-squared, so the sum of just those two is 2x-squared.

8 0

3 years ago