Solve the system of equations. 2y+7x=-5 &5y-7x= 12 x=, y=

ASAP

x = -1 , y = 1

Step-by-step explanation:

2y+7x = -5

7x = -5 - 2y

5y-7x = 12

5y - (-5 - 2y) = 12

5y + 5 + 2y = 12

7y = 7

y = 1

7x = -5 - 2 = -7

x = -1

x = -1

y = 1

Step-by-step explanation:

2y + 7x = -5

5y - 7x = 12

Add both equations to eliminate 7x

7y = 7

Divide both sides by 7 to isolate y

7y/7 = 7/7

y = 1

Now substitute 1 for y in either equation to get x.

Using equation 1, we have

2y + 7x = -5

2 x 1 + 7x = -5

2 + 7x = -5

Subtract 2 from both sides to eliminate 2 on the left

2 - 2 + 7x = -5 - 2

7x = -7

Divide both sides by 7 to isolate x

7x/7 = -7/7

x = -1

x = -1

y = 1

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680

the answer is the option b

the range is all real numbers

step-by-step explanation:

we know that

the absolute value parent function is equal to

see the attached figure to better understand the problem

so

a. it is v-shaped > is true

b. the range is all real numbers > is not true

because the range is the > [0,∞)

all real numbers greater than or equal to zero

c. it goes through the origin > is true

d. the domain is all real numbers > is true

step-by-step explanation: