Let n be the amount of time it takes william to cut the lawn. Then Shelly takes
n-2 hours. So:
1/n+1/n-2=1/3
3(n-2)+3n=n²-2n
6n-6=n²-2n
n²-8n+6=0
Using the quadratic formula, we get a positive value of 7.1623 hrs as the amount of time william takes working alone, and 5.1623 as the amount of time Shelly takes working alone
☺☺☺☺
X + y = 25
x is the smaller number.
y is the smaller number plus 9 (x + 9).
x + (x + 9) = 25
2x + 9 = 25
2x = 16
x = 8
8 + y = 25
y = 17
The numbers are 8 and 17.
Answer:
14.4 inches to the nearest tenth.
Step-by-step explanation:
The square has area x^2 where x is the length of each side so:
x^2 = 13
x = √13.
The perimeter is the distance all around the square and this is 4x so we have the answer 4 *√13
14.422 inches.
Answer:
28/12
Step-by-step explanation:
you multiply 12 times 2
then add it to 4