Simplify by combining like terms.-9x + (-3x)
A. 12x
B. 6x
C. -12x
D. -6x
Answer: C
Mathematics
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Use a calculator to approximate the square root. Round to three decimal places.
A. 70.000 B. 8.364 C. 8.367 D. 8.372
Mathematics
Perform the operation and simplify, or solve the equation for the variable.
= 
+ 
A. -3
B. 3
C. 
D. no solution
Mathematics
Simplify by first converting to rational exponents. Assume that all variables represent positive real numbers.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.A child throws a ball with a speed of 9 feet per second at an angle of 39° with the horizontal. Express the vector described in terms of i and j. If exact values are not possible, round components to the nearest thousandth.
A. -6.994i + 5.664j B. 5.664i + 6.994j C. 6.994i + 5.664j D. 5.664i - 6.994j
Mathematics