Answer:
A) 7 is the greatest common factor of the expression.
B) factoring the expression we get
Step-by-step explanation:
We are given the expression:
Part A: What is the greatest common factor of the expression?
We need to find the greatest common factor of the expression.
The expression is divisible by 7
So, 7 is the greatest common factor of the expression.
Part B: Factor the expression
We need to factor the expression:
Taking 7 common:
So, factoring the expression we get
Answer:
4hrs
car b started at 10am
at 10am car a is already at (40×2hrs)=80m
11am:
a- 80+40=120m
b-0+ 60=60m
12am:
a-120+40=160m
b-60+60=120m
1pm:
a-160+40=200m
b-120+60=180m
2pm:
a-200+40=240m
b-180+60=240m
car B caught up with car A at 2pm
so from 10am to 2pm= 4 hrs
The Pythagorean theorem tells you the other leg is
... √(c² - a²) = √(4.2² -2.9²) = √9.23 ≈ 3.038 ≈ 3.0
_____
There is insufficient information to do anything with forces.
Answer:
5 or 6
Step-by-step explanation:
So I did it in a different way than shown in rsm classes. I said that the speed was x-2 and x.
then I said the distance was 6 and 15. If the time taken was 1 hour more, then we can come up with this equation:
Since the time is 6/x-2 or 15/x
15/x-6/x-2=1
multiply everything to get a common denominator then cancel it out to get
(15x-30)-6x=x^2-2x
11x-30=x^2
x^2-11x+30=0
(x-5)(x-6) is factored form.
so x=5 or x=6. this means that the speed of the boat is either 5km/h or 6 km/h