Answer:x=-4 and x=4
Step-by-step explanation:
Took the assignment on edg 2020
Answer:
see below
Step-by-step explanation:
The perimeter is the sum of all the sides
A + B+ C+ D + E = 190
x+5 + x+10 + -5(x-20) + 6x-10+ 2x+4(20-x) = 190
Distribute
x+5 + x+10 -5x+100 +6x-10 +2x +80 -4x = 190
Combine like terms
x + x -5x-4x+6x +2x +80+10+100 -10+5 = 190
x +185 = 190
Subtract 185 from each side
x+185-185 = 190-185
x = 5
Side A = x+5 =5+5 =10
Side B = x+10 = 5+10 =15
Side C = -5(x-20) = -5(5-20) = -5(-15) = 75
Side D = 6x-10 = 6(5) -10 =30-10 = 20
Side E = 2x+4(20-x) = 2*5 +4(20-5) = 10+4(15) = 70
Using the four points around the drawing, we can see that angle four is connected to the vertex A.
The answer I believe is:
D. Vertex A.
Hope I could help! Have a good one.
These are a lot easier when they r like this...no coefficient in front of ur x^2.
x^2 + 5x - 14....u see ur last sign, the -.....this tells me that in ur 2 factors, both signs will be different....one is positive and one is negative. U see ur first sign, the +, this tells me that ur bigger number will be positive.
Now we just have to find 2 numbers, that when added = 5 and when multiplied = 14, So ur 2 numbers are 7 and 2.
(x^2 + 5x - 14) =
(x + 7)(x - 2) <===