Answer:
What are the variables you have to show the variables for your answer.
Answer:
f-1(x) = (x - 16)/40
B
Step-by-step explanation:
Call f(x) = y
Interchange x and y
x = (5y + 2)*8 Remove the brackets
x = 40y + 16 Subtract 16 from both sides
x - 16 = 40y Interchange the left and right sides
40y = x - 16 Divide by 40
y = (x - 16)/40
f-1(x) = (x - 16)/40
Answer:
{-1, 5/2}
Step-by-step explanation:
2x² - 3x = 5
2x² - 3x - 5 = 0
(2x - 5) (x + 1) = 0
2x - 5 = 0, therefore 2x = 5 and x = 5/2
x + 1 = 0, therefore x = -1
The sum of the two smaller sides must be greater than longest side.
A) 3+2 > 7 ..... False
B) 6+10 > 14 ... True
C) 3+2 > 5 ....False
D) 23+18 > 42 ....False
Answer is B