slope = rise over run = y/x
A (-1,3) slope = 3/-1 = -3
B (1,2) slope = 2/1 = 2
C (-3,-1) slope = -1/-3 = 1/3
2 lines need to be negative reciprocals in order to be a right triangle
negative reciprocal of -3 is 1/3
so this is a right triangle
Answer:
I dont know why the answers are the same thats how i got the answer solving them
Step-by-step explanation:
answer for 9x+3y=-15
is
x=-5/3 -y/3
y= -5 - 3x
answer for -18x-6y=30
is
x=-5/3 - y/3
y= -5-3x
<span>Answer: (<span><span>9a</span><span>−1</span></span>) </span><span>(<span><span>3a</span>+5</span><span>) .
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Answer:
$0.06
Step-by-step explanation:
Lets find the total cost of the items
3 cakes at 5.95 each
3*5.95 = 17.85
1 gallon punch at 2.09
The total cost of the items
17.85 + 2.09 = 19.94
She paid with a 20.00
20.00 - 19.94 = .06
She will get .06 back
5a – 7b + b2 <span>for a = –1 and b = 5.
5(-1) - 7(5) +5^2
= -5 - 35 + 25
= -40 + 25
= -15</span>