Use the distributive property to multiply. Then, if possible, simplify the resulting expression.3(7 + m)
A. 21m
B. 21 + m
C. 21 + 7m
D. 21 + 3m
Answer: D
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Perform the indicated operation. Give answers in rectangular form expressing real and imaginary parts to four decimal places.[5(cos 20° + i sin 20°)][4(cos 10° + i sin 10°)]
A. 17.3205 + 10.0000i B. 0.8660 + 0.5000i C. 0.5000 + 0.8660i D. 10.0000 + 17.3205i
Solve the problem.The number of students in a school in year n is estimated by the model
. About how many students are in the school in each of the first three years?
A. 102, 134, 178 B. 102, 134, 160 C. 116, 148, 192 D. 108, 134, 178
True or false? The ordered triple listed is a solution of the system.(-5, 4, -3) x + y + z = -4 x - y + 4z = -213x + y + z = -14
A. True B. False
Add.54 hours + 26 hours + 91 hours
A. 181 hours B. 161 hours C. 271 hours D. 171 hours