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

Answer:
640
Step-by-step explanation:
In order of operations, do exponents before multiplying.
8 squared= 64
64 x 10=640
81 servings. I found this by making a ratio:
24 c 108 c
------- = -------
18 ser x
I then cross multiplied to get the equation: 24x=1,944. I solved this equation to find x, the number of servings in 108 cups, which was 81.
I remember doing this back in elementary school. I had a hard time with it too!
Answer:
heyyy
Step-by-step explanation:
heyyyy im just here to help in getting them pts because im smart like that :)
I think its like you divide 64 by 4. This will tell you how many sets of the 4 yards you have which is important to know since each 4 yards equals 7 inches. 64 divided by 4 is 16. Then multiple 16 by 7 since there's 16 sets of 4 and each set is 7 inches. This will come to a total of 112 inches.
I hope this helps, sorry if its wrong I haven't done this in a while, but I'm pretty sure its correct