thejusticeleaf
23.01.2021 •
Mathematics
the function f is defined by f(x)=150/x-z where z is a constant. find z if the value of f at x=1/5 is equal to 250
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Ответ:
x = -1
Step-by-step explanation:
f(
) = 120, therefore we can create this equation:
120 = 150 ÷ (
- z)
cross-multiply to get: 24 - 120z = 150
-120z = 126
z = -1
Ответ:
8/5
Step-by-step explanation:
To find the slope given two points
m = (y2-y1)/(x2-x1)
= (4- -4)/(1 - -4)
= (4+4)/(1+4)
=8/5