Answer:
30
Step-by-step explanation:
Answer:
If you expand that, it comes out to 200000000, or in scientific notation, 2.0 × 10⁸.
Step-by-step explanation:
Starting with:
(7 × 10⁵) × (3 × 10²)
Since everything is multiplied, we can drop the brackets:
= 7 × 10⁵ × 3 × 10²
Now we can multiply seven by three, and both powers of ten:
= 20 × 10⁷
We can expand this now as
200000000
or in proper scientific notation:
2.0 × 10⁸
As given, let Jim's rate = x
Let Pete's rate =y
Jim completed half the floor in 12 hours so it's
= 12x
Pete completed the other half of the floor in 10 hours so its
=10y
As floor area is equal so,
.............(1)
Now, given is that Pete can lay 25 more tiles per hour than Jim, this gives=
...... (2)
Putting the value of y from equation (2) in equation (1) , we get

So, the equation is : 
If you want to solve it, it becomes:



Hence, Jim can lay 125 tiles and Pete can lay 25 more so 125+25=150 tiles.
The answer is A because an octagon has 8 sides and if each side is 4 feet you would multiply 4 times 8 and get 32.