All you have to do is find the LCD of the number of hours Mark and Frank uses to paint a room.
Mark - 3
Frank - 4
So list the numbers that are a result of a number and 3 and 4
(example: 4 x 1 = 4, 3 x 3 = 9)
3 - 3, 6, 9, 12, 15
4 - 4, 8, 12, 16
The list goes on and on but what we need to get is the LCD so it means it's the least number that 3 and 4 have in common.
3 and 4 both have 12 so The LCD of 3 and 4 is 12.
Another way of finding the LCD could be multiplying the numbers together, but it's not always gonna be the least number. Remember that LCD stands for Least Common Denominator.
How many hours would it take Mark and Frank to paint the room together at their respective rates?
The answer is - 12 hours
Answer:
297 feet
Step-by-step explanation:
11 × 6 × 6 = 396
396 × 3/4= 297 ft
Answer:
V=πr2h
/3
V=πr2h
/3=π·2.52·8
/3≈52.35988
so the volume is 52.36 inches
Answer:
x+3
Step-by-step explanation:
Area of a rectangle is 
.
We know the width, W, is 
and we know the area is 
.
Inputting this in our formula above we get:
L is a an expression such that when you multiply it to 
gives you 
.
is a difference of squares and can be factored using:
.
.
So L=x-3 and W=x+3.
