Answer:
4.24
Step-by-step explanation:
Answer:
Fred = 31
Natalie = 15
Step-by-step explanation:
We have Natalie and Fred's whos age are unknown, we know that when added, their ages equal 46. While when multiplied with Natalie's age 4 times, their ages is 91.
Create two systems :
F = Fred
N = Natalie
F + N = 46
4N + F = 91
We can change the first equation to Natalie's age alone :
N = 46 - F
Now substitute this into the second equation :
4(46 - F) + F = 91
Distribute :
184 - 4F + F = 91
Subtract 184 from both sides :
-4F + F = -93
Add like terms :
-3F = -93
Divide -3 from both sides :
F = 31
Therefore, Fred is 31 years old. Now replace his age in the first equation :
31 + N = 46
46 - 31
15
Therefore, Natalie is 15 years old.
Answer:
There would be 21 adults on the bus.
7:5
21:15
Answer:
10 minutes
Step-by-step explanation:
It is the y-intercept in the equation y=mx +b for this problem which happens to be y=6x+10
Answer:
r=10.0
(10.0267614148)
Step-by-step explanation:
So circumference=2πr
63=2πr
lets divide both sides by π
20.0535228296=2r
lets divide both sides by 2, you should have your answer
r=10.0267614148, but since we are rounding to the nearest tenth it should be r=10.0
hope i could help :)
