Answer:
200
Step-by-step explanation:
First, we know that 1 meter=100 centimeters, so we need to find a common measurement. Lets right it all as meters, so we dont get confused. Then we can find the total area of the floor by multiplying the too side lengths together:
400 centimeters x 200 centimeters= 80000 centimeters!
The total area of the floor is 80,000 centimeters
Now find the area of each tile:
20 centimeters x 20 centimeters= 400 centimeters
Now to find how many of those tiles can fit in that floor, we divide 80,000 by 400.
80,000/400=200
He needs 200 tiles.
Hope this helps!
Answer:
m = -4 or m = sqrt(6) or m = -sqrt(6)
Step-by-step explanation:
Solve for m:
m^3 + 4 m^2 - 6 m - 24 = 0
The left hand side factors into a product with two terms:
(m + 4) (m^2 - 6) = 0
Split into two equations:
m + 4 = 0 or m^2 - 6 = 0
Subtract 4 from both sides:
m = -4 or m^2 - 6 = 0
Add 6 to both sides:
m = -4 or m^2 = 6
Take the square root of both sides:
Answer: m = -4 or m = sqrt(6) or m = -sqrt(6)
Answer = 16 1/2
hope this helped
The answer is 81 2/5 or 81.4. You have to change 9 1/4 and 8 4/5 to decimals and then multiply.