Solve the problem.How many km long is a 10,500 m race?
A. 105 km
B. 10.5 km
C. 1.05 km
D. 1,050,000 km
Answer: B
Mathematics
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Solve the problem.The sum of two angles is 162°. One angle is 21° less than twice the other. Find the angles.
A. 97° and 65° B. 59° and 97° C. 61° and 101° D. 59° and 103°
Mathematics
Find the center and the radius of the circle.x2 + y2 + 7x - 3y - 23 = 0
A. 
, r = 
, 
B. 
, r = 
C. 
, r = 
D. 
, r = 
Mathematics
Write the standard form of the equation of the circle with the given center and radius.Center (-7, 0), r = 5
A. x2 + (y - 7)2 = 5 B. (x + 7)2 + y2 = 25 C. x2 + (y + 7)2 = 5 D. (x - 7)2 + y2 = 25
Mathematics
Solve the system by elimination.
A. 
B. 
C. 
D. 
Mathematics