State the phrase as a mathematical expression. Use x to represent the variable.Two times a number
A. 2 + x
B. 
C. 2x
D. 2 - x
Answer: C
Mathematics
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Solve the system of equations.x - y + 4z = -5-2x + 2y - 8z = -2x + 4y + z = 10
A. {(0, 3, -2)} B. {(-2, 3, 0)} C. ? D. {(-2, 0, 3)}
Mathematics
Complete the sketch so that it has the indicated symmetry.Complete the sketch so that it has line symmetry about l.
What will be an ideal response?
Mathematics
Provide an appropriate response.The life expectancy (in years) of a keyboard is distributed exponentially with k = 
. If the keyboard's warranty lasts 2 years, what is the probability that a keyboard will break down after the warranty expires?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Determine if the given function y = f(x) is a solution of the accompanying differential equation.y' + y = e2xy = 5e- x + 
e2x
A. Yes B. No
Mathematics