Simplify the expression. Assume that all variables are positive when they appear.(
+ 
)(
- 
)
A. 8 - z
B. 8 - 2
C. 8 - 2
D. 8z
Answer: A
Mathematics
You might also like to view...
Graph the function.Graph the lower branch of the hyperbola y2 - 4x2 = 1.
A. 
B. 
C. 
D. 
Mathematics
Let x represent the number. Write the English phrase as an algebraic expression.The sum of twice a number and 30
A. 2 + x + 30 B. 60 + x C. 2x + 30 D. 2(x + 30)
Mathematics
Determine whether f(x) represents a polynomial function.f(x) = 7x5 + 7x2 - 10
A. No B. Yes
Mathematics
Solve the problem.The formula 
models the safe maximum speed, v, in miles per hour, at which a car can travel on a curved road with radius of curvature, r, in feet. A highway crew measures the radius of curvature at an exit ramp as 810 feet. What is the maximum safe speed?
A. 81 mph B. 50 mph C. 42 mph D. 45 mph
Mathematics