Answer:
e = -2
Step-by-step explanation:
Hey man, I got straight A's in math all year so here's the answer!
Good Luck! :)
Answer:
The area of the circular ripple after t second is
A =25π t²
where A is in cm².
Step-by-step explanation:
Given that,
Circular ripple that travels outward at a speed of 5 cm per second.
It means that, the radius of the circular ripple increases at a seed 5 cm/ s.
Therefore the radius of the circular ripple after t seconds is
r(t)= 5t
where r(t) is in cm.
We know ,
The area of a circular object is = π r²
The area of the circular ripple after t second is
A= π(5t)²
=25πt²
where A is in cm².
Answer:
Step-by-step explanation:
eq. of a circle is (x-h)²+(y-k)²=r²
where center=(h,k)
and radius=r
so (x+2)²+(y+5)²=4²
5 * 7/10 = 3.5 So Between 3 & 4
Answer:
4:20
Step-by-step explanation:
The answer should be 4:20
1. Total the number of CD's
2. 4:20 are country
3. Therefore out of 20 CD's there's a probability that 4 will be chosen.
Hope This Helps <3