Multiply mentally.7 × 40

A. 47
B. 240
C. 280
D. 320

Answer: C

Mathematics

You might also like to view...

Simplify the expression. Assume that variables represent nonzero numbers.2  

A.
B.
C. x2y2
D.

View
Mathematics

Find the LCD of the rational expressions. Then rewrite each as an equivalent rational expression with the LCD.; 

A. ; 
B. ; 
C. ; 
D. ; 

View
Mathematics

Perform the requested operation or operations.f(x) = 3x + 13; g(x) = 3x - 1Find f(g(x)).

A. f(g(x)) = 9x + 16 B. f(g(x)) = 9x + 38 C. f(g(x)) = 9x + 12 D. f(g(x)) = 9x + 10

View
Mathematics

Solve the equation.x4 + 432 = 57x2

A. 9, 48
B. -48, -9, 9, 48
C. -4, -3, 3, 4
D. 3, 4

View
Mathematics