Answer:
The correct option is c.
Step-by-step explanation:
It is given that Judy completes a puzzle by herself, it takes her 3 hours.
The part of puzzle completed by Judy in one hour is 
.
Rate is a part of word done by a person in one unit of time.
It means the Judy's rate to complete the puzzle is .
Therefore the correct option is c.
Answer:
9a + 6b and 5c - 3d
Step-by-step explanation:
(a)
4a + 7b + 5a - b ← collect like terms
= (4a + 5a) + (7b - b)
= 9a + 6b
(b)
6c + 4d - c - 7d ← collect like terms
= (6c - c) + (4d - 7d)
= 5c - 3d
We can re-create the quadratic equation by
(x -3) * (x -2)
x^2 -5x + 6 = 0
7 to the power of 7 is : 823543!
Answer: a=14
Step-by-step explanation:
Equation: 5=1/2a-2
