Answer: 10.2
Step-by-step explanation:
Area of a circle is
A= pixr^2
327= 3.14r^2
Divide by 3.14
= 104.14
Get the sq rat of 104.14
= 10.2
Answer: 15.7 minutes
Step-by-step explanation:
Let x be the time in the beginning (in minutes).
Given: The track team is trying to reduce their time for a relay race.
First they reduce their time by 2.1 minutes.
Then they are able to reduce that time by 10
If their final time is 3.96 minutes, then
x-t1-t2= 3.6
x= 3.6+ t1+ t2
x= 3.6+ 2.1+ 10
x= 15.7
Hence, their beginning time was 15.7 minutes.
Answer:
Quadratic Formula x = [-b +- Sq root (b^2 - 4ac)] / 2a
In this example a= 2 b= -6 c= 5
x = [- - 6 +- Sq root ((-6^2) - 4 *2*5)] / 2*2
x = [6 +-sq root (36 -40)] / 4
x = 6 +- 2i / 4
x1 = 1.5 + .5i
x2 = 1.5 -.5i
Step-by-step explanation:
Answer:
77 000 000
* Christina 's estimate is more reasonable
Step-by-step explanation:
67 828 215 + 8 679 682 = 76 507 897
when we round off it , 77 000 000 is the most suitable answer
I think it’s 2 hours and 35 minutes.
