Answer:

Step-by-step explanation:
The equation of a circle with center (h,k) and radius r is given by the formula;

Given (h,k)=(0,0) and r=4, we substitute the values to obtain;

The required equation is

To complete the square you must split the b term in half, then square that answer.
6 is the b term, half of 6 is 3, 3 squared is 9. You will add 9 to both sides of x^2 + 6x = 15
x^2 + 6x + 9 = 24
Answer:
392.00
Step-by-step explanation:
I'm pretty sure you just multiply the 46m x 2 and 150 x 2 both = the length of the whole track. and then add the two together
3.23 x 10^12...basically, u start at the decimal and count 12 spaces to the right
3.230000000000...now remove the decimal 3,230,000,000,000
Answer: Ric will get $4.50 back in change
Step-by-step explanation: $1.25 each cover times 4 covers is $5. 2/5 of 1.25 is .50. add $5 and $.50 is $5.50. if he pays with a ten, subtract, and he will get $4.50. hope this helpedd❤️