Using the given formula T = LS
And given the time is 3 minutes (3 x 60 = 180 seconds)and the speed is 4-1/2 inches per second:
180 = L x 4-1/2
Solve for L by dividing both sides by 4-1/2:
L = 180 / 4-1/2
L = 40
The length should be 40 inches.
X= 55 degrees ...........
Forks :
20 x 12 = 240
Spoons:
10 x 12 = 120
Knives :
5 x 10 = 50
Paper plates :
175
Total :
175 + 50 + 120 + 240 = 585
585 picnic items were donated
Length of the outer frame: 4+2x
width of the outer frame: 3+2x
area of the outframe: (4+2x)(3+2x)=15
expand the equation: 12+8x+6x+12x^2=15
combine like terms: 4x^2+14x-3=0
