I suggest reading them over and over again to remember them. I know it sounds annoying, but trust me, it'll pay off.
Answer:
B. h=2A/(b1+b2) . . . . parentheses are needed
Step-by-step explanation:
Multiply the equation by the inverse of the coefficient of h. That coefficient is (b1 +b2)/2, so its inverse is 2/(b1 +b2). Parentheses are needed.
... 2A/(b1 +b2) = h
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<em>Comment on the answer choices</em>
As written, <em>none of them are correct</em>. The denominator can only be written without parentheses if the division bar is horizontal, and so serves also as a grouping symbol.
Answer:
7 and 1/4 or 7.25
Step-by-step explanation:
28/4 = 7
1/4 = 0.25
7 + 0.25 = 7.25
Answer:
Step-by-step explanation:
To find the inverse of a function f (x) follow the steps below:
1) Make y = f (x)
2) Solve for the variable x
3) Exchange the variable x with the variable y
4) Make 
Finally, the inverse of the function f (x) is:
