Answer:
idk I need the answer too
Step-by-step explanation:
:P
Answer:
x = 3
y = -2
Step-by-step explanation:
x + 2y = -1
2x – 3y =12
Using substitution means that in one equation you solve for a variable. In this case, the first equation would be easier to solve for x since there are no coefficients.
x = -2y - 1
Now, we plug in the value of x into the second equation, and solve for y.
2 (-2y - 1) - 3y = 12
-4y - 2 - 3y = 12
-7y - 2 = 12
-7y = 14
y = -2
Since we have a numerical value of y, we can use it to solve for x by plugging it into one of the original equations.
x + 2(-2) = -1
x - 4 = - 1
x = 3
If you'd like to check the answer, plug in both values you got to the original equations!
I hope this helps!
Answer:
x (7+2x) = 372,
where 372 is the are of this rectangle, and 
is its width.
Step-by-step explanation:
The width of this rectangle is . Twice that width will be equal to 
.
The length of this rectangle is seven more than twice the width of this rectangle, or seven more than . The length of this rectangle will thus equal to 
.
The area of a rectangle is equal to the product of its width and its length. The width of this rectangle times its length will be equal to 
.
For this rectangle, this area is equal to 372. In other words,
.
This equation about represents the relationship between the width, length, and the area of this rectangle.
It’s B ) THE SLOPE IS POSITIVE
Answer:
Try Khan Academy. They give lots of expression to find the greatest difference. It always helps me in this situation.
Step-by-step explanation:
