4. C and D both are correct
12. H
11. B
A = L * W
A = 400
L = 4W
400 = 4W * W
400 = 4W^2
400/4 = W^2
100 = W^2
sqrt 100 = W
10 = W.....width is 10 cm
L = 4W
L = 4(10)
L = 40...length is 40 cm
P = 2(L + W)
P = 2(10 + 40)
P = 2(50)
P = 100 <=== perimeter is 100 cm
Answer:
4 + 2.5c = 16
Step-by-step explanation:
Let c = number of candy bars
All soda cost $4.00
Each candy bar costs $2.50, so c number of candy bars cost 2.5c.
The total cost is the sum of the costs of the soda and candy bars.
Total cost is 4 + 2.5c
To write the equation we set the total cost expression above equal to the given total cost.
4 + 2.5c = 16
y-int: 140
slope: -4
to find the slope u gotta use the (y2-y1)/(x2-x1) formula
120-140 = -20
5-0 = 5
-20/5 = -4
