Step-by-step explanation:
Things I notice about this problem:
- "Difference" indicates subtraction.
- "Is" means "equals".
- When a problem simply says "a number," I replace it with a variable.
It is written out like this: .
Type the expression as radicals. Y3/5
2 answers:
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Answer:
g(x)
Step-by-step explanation:
The vertex of g(x) as shwon in the graph is located in the point wich coordinates are (3.5,6.25) approximatively
We need to khow the coordinates of f(x) vertex
- Here is a way without derivating:
f(x) = -x² + 4x -5
let a be the leading factor, b the factor of x and c the constant:
- a= -1
- b= 4
- c= -5
The coordinates of a vertex are: ( , f(
) )
-b/2a = -4/ (-1*2) = 4/2 = 2
f(2)= -2²+4*2-4 = -4+4-4 = -4
obviosly f(x) has a minimum wich less than g(x)'s maximum
Answer: Holly would take 60 minutes to clean alone.
Step-by-step explanation:
Let t = Time taken by Holly to clean alone.
Given: Time taken by Mia to clean alone = 30 minutes
Time taken by Mia and holly to clean their room = 20 minutes
Then,
Hence, Holly would take 60 minutes to clean alone.