Answer:
Step-by-step explanation:
a
The square root of 20 = 4.47 so a for sure.
But the root of 20 is also -4.48 so that means that 2 and 3 are added to the list
Now what to do about - 8
(- 8)^2 = 64
The square root of 64 = +/- 8
It's kind of slippery but it depends on how you see the problem. It is a bit ambiguous.
I would eliminate - 8 but your instructor may not. Argue that it should not be included, but don't take the argument on forever. Let it go.
a for sure.
b and c I think so.
-8 is iffy.
Answer a
Answer:
A car travels 75 km in 1 hour; we say that the speed of the car is 75 kilometers per hour, so 75 km/hr.
The answer is: 
The explanation is shown below:
1. You have the following expression given in the exercise above:

2. By applying the distributive property, you obtain:

3. Now, you must factor

in the numerator and

in the denominator:
4. Simplify:
Answer:
Step-by-step explanation:
1+2=3
3/2
1.5 AKA your answer
:)