MATHEMATICS COLLEGE

Solve the system of equation by elimination. x+2y= -7
-x-2y=8

A. (8,7)
B. No solution
C. (-7,8)
D. (-8,7)

If you can, please explain step by step:)

Answers

Answer 1

Answer:

Answer: D

Step-by-step explanation:

Answer 2

Answer: D. (-8,7) just do it

Related Questions

You are relieved from your position as a machine operator at the plant at 11:25 for a 50-minute lunch break. When must you begin working again.
Select all the properties that are used below to solve 7y − 15 = −29. 7y – 15 + 15 = –29 + 15 7y = –14 7y7 = –147 y = –2 A. Identity Property of Multiplication B. Addition Property of Equality C. Distributive Property D. Inverse Property of Multiplication E. Commutative Property of Addition
#7: Twenty-three more than 10 times a number is the same as 5 more than 1 pointthe number. *Your answer26 more than twice the
A circle has a radias of 12in. The diameter of the circle is _____in. In order to find the area of the circle, use the formula ____ The area of the circle is ____Thanks
Can you Explain how to do this plz

Please answer asap.........

Answers

Answer:

1.4 i would wait for someone else to answer it I'm not sure

Step-by-step explanation:

John drives 257 miles and uses 9 gallons of gas. How many miles per gallon did he get?

Answers

Answer:

29 miles were used per gallon

Step-by-step explanation:

257 / 9 = 28.555..

We can round 28.555 to about 29.

So John got 29 miles per gallon.

How many meters are in 100 millimeters? 1
10
0.1
100

Answers

Answer:

0.1

Step-by-step explanation:

divide the length value by 1000

Which expression has a value of 1?
(Need answer ASAP)

Answers

Answer:I am adding the brackets to show in which order the expressions will be evaluated:

(4 ÷ 4) + 4 – 4 = 1+4-4 = 1 (the correct answer)

(4 · 4) – (4 ÷ 4)= 16-1 = 15

4 –( 4 ÷ 4) – 4= 4-1-4 = -1

(4 ÷ 4) + 4 + 4 = 1+4+4 =9

hope this help yu the answer is A

hope this hlpe

Step-by-step explanation:

the equation of line AB is y = -1/4 x - 2. write an equation of a line parallel to line AB in slope intercept form that contains point (-3,2)

Answers

The general equation of a straight line is in the form of;
Y=MX + c,
Where m is the gradient and
C the y-intersept.
Parallel line have the same gradient.
From the equation,
Y=-1/4X - 2,
Gradient = - 1/4.

Now assuming that the second line passes through (x,y) and (-3,2).
(Y-2)/(X--3) =-1/4
4(Y-2)=-1(X+3)
4Y-8 = -X-3
4Y = -X -3+8
4Y = -X +5
Y = -1/4X +5/4

Answer: y = -(1/4)x + 5/4

Explanation:

1) Parallel lines have equal slopes.

2) The slope-intercept form of the equation of the line is y = mx + b, where m is the slope and b is the y-intercept.

3) Hence, the slope of the given equation, i.e. y = (-1/4)x - 2 is m = -1/4

4) Therefore, that is the same slope of any line parallel to it, m = -1/4

5) The slope-point equation of the line is:

y - y₁ = m (x - x₁)

6) Now you replace -1/4 for m, and the point (-3,2)

⇒ y - 2 = [ -1/4) (x - (-3) ]

7) Expand the product and simplify:

y - 2 = -x/4 - 3/4
y = -x/4 -3/4 + 2
y = -x/4 + 5/4

And that is the equation requested

Write an equation to solve for x.

Please provide steps