Answer:
5mph time = 0.8h
8mph time = 0.5h
Step-by-step explanation:
Lets assume that 5mph time is x and 8mph time is y
Then
x + y = 1.3h
5x + 8y = 8
x = 1.3 - y
5(1.3 - y) + 8y = 8
6.5 - 5y + 8y = 8
3y = 8 - 6.5
y = 0.5
x = 1.3 - 0.5 = 0.8
Answer:
<em>The solution is too long. So, I included them in the explanation</em>
Step-by-step explanation:
This question has missing details. However, I've corrected each question before solving them
Required: Determine the inverse
1:
Replace f(x) with y
Swap y & x
Divide through by 25
Replace y with f'(x)
2.
Replace g(x) with y
Swap y & x
Add 1 to both sides
Make y the subject
3:
Replace h(x) with y
Swap y & x
Add to both sides
Multiply through by -4
Divide through by 9
4:
Replace f(x) with y
Swap y with x
Take 9th root
Replace y with f'(x)
5:
Replace f(a) with y
Swap a with y
Subtract 8
Take cube root
Replace y with f'(a)
6:
Replace g(a) with y
Swap positions of y and a
Solve using quadratic formula:
; ;
becomes
Factorize
7:
Replace f(b) with y
Swap y and b
Open Brackets
Solve using quadratic formula:
; ;
becomes
Factorize:
Replace y with f'(b)
8:
Replace h(x) with y
Swap x and y
Cross Multiply
Subtract x from both sides:
Subtract 2y from both sides
Factorize:
Make y the subject
Replace y with h'(x)
9:
Replace h(c) with y
Swap positions of y and c
Square both sides
Subtract 2 from both sides
Make y the subject
10:
Replace f(x) with y
Swap positions of x and y
Cross Multiply
Subtract y from both sides
Add x to both sides
Factorize
Make y the subject
Replace y with f'(x)
She will need 2 1/2 boxes of crackers.
Work:
1/12 times 30/1 is 30/12 which simplifies to 2 1/2.
I'm not totally sure I'm correct but I hope this helped!
Answer:
67796.61
Step-by-step explanation: