Solve the formula for the stated variable.C = 2?r; solve for r
A. r = 
B. r = 
C. r = 2C?
D. r = 
Answer: A
Mathematics
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Decide whether the figure is convex or concave.
A. Concave B. Convex
Mathematics
Add or subtract as indicated.
+ 1
A. - 
B. 
C. - 
D. 
Mathematics
Looking at the curve in the graph below, you can draw the following conclusions:
a. RD and rd are equal.
b. Vf has no effect on If.
c. If decreases as Vf increases.
d. The resistance decreases as Vf increases.
e. The resistance increases as Vf increases.
Mathematics
Solve the problem, using 3.14 for ?. Round to nearest tenth unless instructed differently.Find the area of the circular racetrack.(Use 3.14 for ?. Round to the nearest foot.) r = 80 ft R = 150 ft
A. 50,554 ft2 B. 70,650 ft2 C. 20,096 ft2 D. 61,544 ft2
Mathematics