Solve.The sum of the squares of the digits of a positive two-digit number is 20, and the tens digit is 2 more than the units digit. Find the number.
A. 42
B. 24
C. 35
D. 53
Answer: A
Mathematics
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Solve the equation for the indicated variable.
= b for x
A. 
B. 
C. b + a
D. ab
Mathematics
Solve the problem.A runner is competing in an 8-mile race. As the runner passes each miles marker (M), a steward records the time elapsed in minutes (t) since the beginning of the race, as shown in the table. What is the runner's average speed over the first 3 miles? Round your answer to four decimal places.
A. 0.0862 miles/min B. 0.0649 miles/min C. 14.3266 miles/min D. 0.0698 miles/min
Mathematics
Use the Trapezoidal Rule with n = 4 steps to estimate the integral.
A. 
B. 
C. 
D. 
Mathematics
Solve.At his dairy farm, Jerry has 25 Holstein cows and 26 Jersey cows. Write the ratio of Holsteins to Jerseys as a fraction in simplest form.
A. 
B. 
C. 
D. 
Mathematics