Solve the problem.A painter can finish painting a house in 5 hours. Her assistant takes 7 hours to finish the same job. How long would it take them to complete the job if they were working together? (Round your answer to the nearest tenth, if necessary.)
A. 2.9 hr
B. 4 hr
C. 6 hr
D. 3.4 hr
Answer: A
Mathematics
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Suppose 100 people counted the number of cars passing an intersection in one hour. Due to error, not all people get the same value. The mean is 75 and the standard deviation is 1. Use the sketch to find how many people report the following. 
More than 74 cars
A. 16 people B. 34 people C. 50 people D. 84 people
Mathematics
Find the center and the radius of the circle.x2 + y2 - 3x + 3y - 118 = 0
A. 
, r = 
B. 
, r = - 
, 
C. 
, r = 
D. 
, r = 
Mathematics
Clear fractions and solve.
- 
- 
= 0
A. 6
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Find the complement of a 59° angle.
A. 121° B. 301° C. 211° D. 31°
Mathematics