Answer:
b = 11 m
l = 44 m
Step-by-step explanation:
l = 4b (length is four times width)
Perimeter = 110 m
2 * ( l + b ) = 110
2 * (4b + b ) = 110
2 * 5b = 110
b = 110 / ( 2*5) = 11
b = 11 m
l = 4b = 4 * 11 = 44 m
Equation for length:
l = 3w
l × w = 12
Substitute 3w into L.
(3w) × w = 12
4w = 12
w = 3
Substitute 3 into w to find the length.
l = 3w
l = 3×3
l = 9
The width is 3 and the length is 9.
Answer: 45.43%
Step-by-step explanation:
The square root of pi is 1.77245385091 :)
Answer:
She catered for 40 people.
Step-by-step explanation:
According to the information given, you can write an equation that indicates that 30 people multiply for its cost that is $10 plus the number of people after 30 for its cost that is $9 is equal to $390. According to this, the equation is:
10(30)+9x= 390, where
x= number of people after 30
Then, you can solve for x:
300+9x= 390
9x=390-300
9x= 90
x=90/9
x=10
The answer is that she catered for 40 people, 30 people at a cost of $10 and 10 people for a cost of $9.
