Answer:
It depends on where point D is placed so C > 0
Step-by-step explanation:
As i said above
1/-3 or 4/-12, as long as you multiply or divide the numerator and the denominator with the same number the fraction will be equivalent. To get 1/-3 I divided 2 with 2 and -6 with 2.
I hope this helps you
m=1/2
1/2 (0-x)=-2-y
-1/2x= -2-y
y=1/2x-2
Answer:
The answer should be (-4,2)
Step-by-step explanation:
Answer:
Here's what we know:
A = Lw (Area is length times width)
L = 2w + 6 (length is twice the width plus 6)
A = 140 (Area is 140 m2)
Plug in the variable values:
140 = w(2w + 6)
Distribute:
140 = 2w2 + 6w
Subtract 140:
2w2 + 6w - 140 = 0
Factor out a 2:
2(w2 + 3w - 70) = 0
Divide both sides by 2:
w2 + 3w - 70 = 0
(w + m)(w - n)
When we factor out the quadratic, we know it's going to be a +/- situation because the c value in the quadratic is negative, and the two numbers are going to be three away, the plus next to the 3 meaning that the larger number is going to be positive:
(w + 10)(w - 7) = 0
w = -10, 7
We can't have a negative length, so we can toss out the -10, leaving us with w = 7 meters.
L = 2 * 7 + 6
L = 14 + 6
L = 20
Check:
140 = 20 * 7
140 = 140
