To find length BC, we can use
cos 60° = adjacent/hypotenuse
cos 60° = a/12
The formula to start with is (DC +CE) * CE = (AB + BE) * BE
Replace the letters with the numbers and equations:
(1 + x+4) * x+4 = (11 + x+1) * x+1
(x+5) * (x+4) = (x+12) * (x+1)
x^2 + 9x +20 = x^2 +13x +12
x^2 = x*x = 2x
11x+20 = 15x+12
20 = 4x+12
8 = 4x
x = 8/4
x = 2
Answer: 55.488 or 55 61/125
Step-by-step explanation:
Because I used a calculator so I know this is right.
Answer:
slope: -2 y intercept: -4 x intercept: -2
Step-by-step explanation:
slope (m) = (-14 -4) / (5 - -4) = -18 / 9 = -2
y intercept (b) = y - mx = 4 - (-2)x(-4) = 4 - 8 = -4
equation: y = -2 x - 4
x intercept: y = 0 x = -2
Answer:
16
Step-by-step explanation:
First, simplify by finding the absolute values:
2|-9| - |-2|
2(9) - (2)
Then, simplify this by multiplying 2 and 9:
18 - 2
= 16
So, the answer is 16