Answer:
x = (1 ±√97)/4 ≈ {-2.21221, 2.71221}
Step-by-step explanation:
Multiply the equation by 12x to clear fractions.
12 = 2x^2 -x
6 = x^2 -1/2x . . . . . . divide by 2
6 +1/16 = x^2 -1/2x +1/16 = (x -1/4)^2 . . . . . add 1/16 to complete the square
±√(97/16) +1/4 = x . . . . . . square root and add 1/4
x = (1 ±√97)/4
x ≈ -2.21221, 2.71221
Just organized them. Order:
15, 18, 46, 50, 50 ,50, 50, 57
Add them up, which is 336. Divide that by 2, and the mean is 168
The number 12 belongs to a set of even numbers
Answer:
125-x
Step-by-step explanation:
i don't know what exactly you're aiming for, but if you want to write this as an equation, you would put it as 125-x. since we don't know what the number is, we would put a variable that we can sub in any number we want.
hope this made sense!
Answer:
m ∠A =90°, m ∠B =60°, and m ∠C =30°
Step-by-step explanation:
If a > b> c you know the the side opposite ∠ A is the longest side and the side opposite ∠C is the shortest side.
side BC is the longest side, side AB is the shortest side, and side AC measure is the second longest side.
Draw the Δ ABC and label the longest side, shortest side, and the middle side. Now the longest side is opposite the biggest angle, the shortest side is opposite the smallest angle.
m ∠A =90°, m ∠B =60°, and m ∠C =30°
