<em>If the radius of a sphere is doubled, the surface area becomes four times the original surface area.</em>
Answer:
The first one is true. 5b+15=14
Step-by-step explanation:
(b+3)/7= 2/5
After cross-multiplication:
5(b+3)=2*7
5b+15=14
Answer:
53 students on each bus
Step-by-step explanation:
506-29=477 (take out the students that went by car)
477/9 = 53 (distribute 477 students evenly in 9 buses)
Answer:
10
Step-by-step explanation:
To find the value of n we can write:
(n + n + 3 + n + 4 + n + 5 + n + 6 + n + 8 + n + 10 + n + 12 + n + 15) / 9 = 11
(9n + 63) / 9 = 11
9n + 63 = 99
9n = 36
n = 4
The median is n + 6 which is 4 + 6 = 10.
Well the 10,000 digit will be 1 and the thousand digit = 7 + 1 = 8
so the first 2 digits are 18
6 fewer than 8 = 2 so we get 182
1 fewer 10 than 1000's is 8-1 = 7 so we have 1827
and 5 fewer ones than 1000.s = 8 - 5 = 3
So our number is 18,273