Answer:
x = 0, π/4, π, 7π/4
Step-by-step explanation:
sin(2x) = √2 sin x
Use double angle formula.
2 sin x cos x = √2 sin x
Move everything to one side.
2 sin x cos x − √2 sin x = 0
Factor.
sin x (2 cos x − √2) = 0
Solve.
sin x = 0, cos x = ½√2
x = 0, π/4, π, 7π/4
Answer:
a = -1, h = 2, k = 3
Step-by-step explanation:
(h,k) : (2,3)
f(x)=a|x-h|+k pass (0,1)
1 = a|0-2|+3 = 2a + 3
2a = -2
a = -1
Answer:
If 6 apples cost $1.98 then 20 apples cost
Step-by-step explanation:
First you want to find the unit rate so divide both numbers
so the answer is 3
A^2 + b^2 = c^2.......a and b r the legs and c is the hypotenuse
8^2 + b^2 = 14^2
64 + b^2 = 196
b^2 = 196 - 64
b^2 = 132.....take square root of both sides, eliminating the ^2
b = square root 132
b = 11.49 rounds to 11.5 <==