Answer:
-2-2√3, -2+2√3
Step-by-step explanation:
Let x represent one of the numbers. Then the other number is -4-x. We want the product to be -8:
x(-4-x) = -8
-4x -x^2 = -8 . . . . . eliminate parentheses
x^2 +4x = 8 . . . . . . multiply by -1
x^2 +4x +4 = 12 . . . add 4 to complete the square
(x +2)^2 = 12
x +2 = ±√12 = ±2√3
x = -2±2√3
The two numbers are -2-2√3 ≈ -5.4641, and -2+2√3 ≈ 1.4641.
Answer:
C) P=56cm^2
Step-by-step explanation:
P=(a*h)/2 a=14, h=8
P=(14*8)/2
P=112/2
P=56
Answer:
I'd say D) a worried young man
Answer: 9 cm
Step-by-step explanation:
The formula of the area of a square is
A = s²
The ‘A‘ stands for area and the ‘s’ stands for side measure.
Now, since you already know the side measure, it’s 3cm, you just have to put it into the equation.
So, now you have:
A = 3²
A = 9
Therefore, the area of the square is 9 cm.
Answer:
$27.30
Step-by-step explanation:
26.35*.15=3.95
26.35+3.95=27.30
