Answer:
obviously c
Step-by-step explanation:
9 is more than 8
Let width = x
Let length = 2x + 11
Area = 63 ft2
length × width = Area
x(2x + 11) = 63
2x2 + 11x = 63
Subtract 63 on both sides of equation.
2x2 + 11x - 63 = 0
Factor the left side of equation.
(2x - 7)(x + 9) = 0
x = 7/2 and x = -9
Since the dimensions cannot be negative, we accept the positive value of x: x=7/2. Substitute this value of x into the dimensions
width = 3.5 ft
length = 2(3.5) + 11 = 7 + 11 = 18 ft
Answer:
x = 25
∠CAB = 50°
∠CBA = 50°
Step-by-step explanation:
sum of angles of triangle = 180
2x + 2x + 80° = 180°
4x = 180 - 80
4x = 100
x = 25
∠CAB = 2x = 2 × 25 = 50°
∠CBA = 2x = 2 × 25 = 50°
Answer:
1) 9
2) 256
3) -32
4) -2744
Step-by-step explanation:
This is much easier to explain with a picture so...
First, simplify the coefficients. Then, simplify the variables. The y's cancel each other out so, you have your answer of -3x