9514 1404 393
Answer:
-4, 0
Step-by-step explanation:
The denominator is x^2+4x. This is zero when ...
x^2 +4x = 0
x(x +4) = 0
The zero product rule tells you the product is zero when the factors are zero.
x = 0
x +4 = 0 ⇒ x = -4
The denominator is zero for x=0 and x=-4.
Answer: 28.26
Step-by-step explanation:
What your looking for is called the annulus (or the difference of two concentric circles). You can find the annulus by subtracting the area of the inner circle from the area of the outer circle. Volume of a circle= πr²
You are given the diameter in these problems, so you need radius.
For the first circle (8 in one) :
8/2=4 r=4
A=3.14(4)²
A=50.24
For the second one (10 in one) :
10/2=5 r=5
A=3.14(5)²
A=78.5
To find the measure of the annulus, you subtract those numbers, getting 28.26
Using basic distance = speed x time, and rearranging it for speed as the subject...
Answer:
48 + y = c
Step-by-step explanation:
C = cookies
Comment:
I hope this helped you. :)
Sorry if I got it wrong.
Answer:
4.6 miles
Step-by-step explanation:
-Since we are given 2 sides and an included angle, we use the Cosine Rule to calculate the distance between the two towns.
-69° is the angle corresponding to the the distance between the two towns;
Hence, the distance between the towns is 4.6 miles
