Answer:
The answers would be =
A = (226.6 + 205.6 + 157.6) / 3 = 589.8 / 3 = (196.6)
B = (119.6 + 61.6 )/2 = 181.2/2 = 90.6
The answer is 3 hope this helps pls thank me
Answer:
x = 6
Step-by-step explanation:
Take f(x) = -(x+9)(x-21) and multiply it out. We get:
f(x) = -[x^2 + 9x - 21x - 189], or
f(x) = -x^2 + 12x + 189
This is a quadratic equation. The coefficients are a = -1, b = 12 and c = 189.
The equation of the axis of symmetry is x = -b/(2a), which here equals:
x = -12 / [2*(-1)], or x = 6.
Answer:
40% are girls
Step-by-step explanation:
60/150=0.4=40%
