Answer:
- large: 40 lbs
- small: 20 lbs
Step-by-step explanation:
A system of equations can be written for the weights of the boxes based on the relationships given in the problem statement. One equation will be for the total weight of 1 large and 1 small box; the other will be for the total weight of 70 large and 60 small boxes.
Let L and S represent the weights of Large and Small boxes, respectively. The system of equations is ...
L + S = 60 . . . . . . combined weight is 60 lbs
70L +60S = 4000 . . . . weight of boxes in the truck
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We can solve this by substituting for s in the second equation.
70L +60(60 -L) = 4000
10L = 400 . . . . . . . . . subtract 3600, simplify
L = 40
S = 60 -L = 20
A large box weighs 40 pounds; a small box weighs 20 pounds.
Answer: 16
Step-by-step explanation:
2x3x2+4
6x2+4
12+4
16!
Answer:
(x + 8)^2 + (y + 13)^2 = 13^2
Step-by-step explanation:
Write out (x - h)^2 + (y - k)^2 = r^2. Recognizing that the center is at
(h, k), with h = -8 and k = -13, and that the radius is 13, we get:
(x + 8)^2 + (y + 13)^2 = 13^2
3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8
