Answer:
24 minutes.
Step-by-step explanation:
Let D represent the distance from school to home and T represent time.
We have been given that your brother takes 40 minutes to get to school.
You take 30 minutes to get to school.
Your brother left 4 minutes before you did, so distance traveled by him would be:
You speed: 
You will catch your brother, when both distances would be same:
Cross multiply:
Use distributive property:
Switch sides:
Therefore, it will take you 24 minutes to catch up your brother.
Answer:
C /2pi = r
Step-by-step explanation:
The circumference of a circle is given by
C = 2 * pi*r
We want to solve for r
Divide each side by 2 pi
C / 2pi = 2*pi*r / 2pi
C /2pi = r
You move the decimal point forward until it reaches the one so it looks like this:
1.4 x 10⁵
the exponent, 5, just tells you how many spaces the decimal point moved.
Answer:
No
Step-by-step explanation:
No, because supplementary angles add up to 180 degrees, and these two do not.
The prefix in the word "regroup" is "re" and it means "again". Separate the words like this (re)read to find the "prefix"
Just think when your teacher ask you to reread the book or the problem.It should come to mind as "Read again"
Good Luck!
