Answer:
30
Step-by-step explanation:
because if x is 5 then 6(5)
and 6x5=30
How much part can sally paint in an hour ?
a ÷ 7 = a/7
And what about Steve ?
a ÷ 9 = a/9
Where, a is the total area of the room.
So, let the time taken by both of them to paint the room together be 't'
So,
t(a/7 + a/9) = a
t(9a/63 + 7a/63) = a
t(16a/63) = a
t = 63/16 ≈ 4 hr
Answer:
C) 
Step-by-step explanation:
The formula for area is
A=pi * radius ^2
If the diameter is 40, the radius is 20
Therefore
Answer:
I believe it is 3/4
Step-by-step explanation:
I dont know I just think it is
Median is just the value that is neither the highest nor the lowest compared with the other values in the set
Mean is just the average of the numbers which is found out by adding up all the numbers then dividing the sum by the number of values in the set
