9514 1404 393
Answer:
3 6/7
Step-by-step explanation:
The nearest perfect squares are ...
3² = 9
4² = 16
Then an approximation of the root can be arrived at by linear interpolation.
√15 ≈ 3 +(15 -9)/(16 -9) = 3 6/7 . . . . . where 16 and 9 are the nearest squares
30 is the answer because 37.5 square minus 22.5 square gives you 900. Then, you find the square root of 900, which is 30.
Vol of small ball = 4/3 pi (2.5)^3
Vol of larger on = 4/3 pi (6.5)^3
Difference = 4//3pi(6.5^3-2.5^3)
= 4/3 pi (259)
= 1085.0
no it is not correct. 18 divided by the sum of 3 and 3 equals 18 ÷ (3+3)
"sum of 3 and 3 " means 3+3 therefore 8/(3x3) = 8/9 and is completely different from the equation desired to be represented.
Step-by-step explanation:
x²+y²−8x−2y=48
the radius => √[(8/2)² + (2/2)² +48] =
√(16+1+48) =√65
the center => (8/2, 2/2)
=> (4, 1)