Answer:
The combined mean can be calculated by plugging in our numbers into the formula given: [(57*82)+(23*63)/(57+23)]=76.5
PEMDAS
f(9)=2x81-3*3
f(9) = 162 - 9
f(9) = 153
a
Step-by-step explanation:
80
720/P = 9/1
Cross multiply.
9P = 720
P = 720/9
P = 80
f(2) = 12
f(x = −x^2 + x + 14
Plug in:
f(x) = −2^2 + 2 + 14
Solve:
f(x) = -4 + 2 + 14
f(x) = -2 + 14
f(x) = 12
Hope this helped.
