Solve the equation.4-x = 
A. 
B. {-2}
C. 
D. {2}
Answer: D
Mathematics
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Write an equation to describe the variation. Use k for the constant of proportionality.x varies jointly as the square of y and the square of z.
A. xy2z2 = k B. x = ky2z2 C. x = k + y2 + z2 D. x + y2 + z2 = k
Mathematics
The temperatures on a summer day satisfy the inequality below, where t is the temperature in degrees Fahrenheit. Express this range without using absolute value symbols.
?
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Evaluate the square root. If the answer is not a real number, state so.-
A. -180 B. not a real number C. -19 D. 19
Mathematics
Evaluate each function. Round your answers to four decimal places. ? sin22.3° and csc22.3° ?
A. 0.5795 and 2.8354 B. 0.3795 and 2.6354 C. 0.4795 and 2.7354 D. 0.4295 and 2.6854 E. 0.5295 and 2.7854
Mathematics