Step-by-step explanation:
step 1. 6.9/2.3 = 3
step 2. 10^7/10^-3 = 10^(7- -3) = 10^(7 +3) = 10^10
step 3. answer: 3 x 10^10.
Answer:
x = 10
z = 97
Step-by-step explanation:
Answer:
They cost 730 all together.
Step-by-step explanation:
One the surface area of the hall is 310m^2.
so, 310 divided by 25 is 12.4, which means they need 13 tin of paint.
The cost for it is 13*10 which is 130.
For the area of the floor, it is 40*15, which is 600m^2.
Which costs 600.
So, 600+130=730.