Recall the double/half angle formulas:
We're given , and since is between π/2 and π, we expect to be negative. So from the Pythagorean identity, we find
Also, we know will fall between π/4 and π/2, so both and will be positive. Then we find
and it follows that
It is a little blurry but you should be able to see it.
Answer:
if your dividing its 4 pounds
Step-by-step explanation:
Answer:
She needs 112 ounces of Solution A and 48 ounces of Solution B.
Step-by-step explanation:
If a is the ounces of Solution A, and b is the ounces of Solution B, then:
a + b = 160
0.45a + 0.95b = 0.60(160)
Solve the system of equations. Using substitution:
0.45a + 0.95(160 − a) = 0.60(160)
0.45a + 152 − 0.95a = 96
56 = 0.5a
a = 112
b = 48
She needs 112 ounces of Solution A and 48 ounces of Solution B.
Length x width equals area of rectangle. 301/2÷61/2=5
the width of the rectangle equals 5 inches.