Answer:
Step-by-step explanation:
You could factor the trinomial and solve it that way, but that is the long way. Just put a - 4 wherever you see an x.
x^2 + 3x + 2 =
(-4)^2 + 3(-4) + 2
16 - 12 + 2
6
The answer is 6.
Answer:
x = ⁷/₅
y = ⁻²⁹/₅
Step-by-step explanation:
4x = 3y + 23 (×3)
12x = 9y + 69
4y + 3x = -19
3x = -4y - 19 (×4)
12x = -16y - 76
∴ 9y + 69 = -16y - 76
25y = -145
y = ⁻²⁹/₅
12x = 9(⁻²⁹/₅) + 69
12x = 69 - ²⁶¹/₅
12x = ⁸⁴/₅
x = ⁷/₅
Answer:
174 inches squared
Step-by-step explanation:
First, we have to remember what the area of a triangle is:
Since there are 4 of the same triangle, multiply the area of one triangle by 4:
Answer:
BC=5
Step-by-step explanation:
4/10=x/x+3
4(x+3)=10x
4x+12=10x
subtract 4x from each side
6x=12
divide both sides by 6
6x/6=12/6
x=2
BC=x+3
substitute for x
BC=2+3
BC=5
Answer:
Triangle IV
Step-by-step explanation:
