Find the sum or difference. Write the answer in standard form.3i + (-9 - i)
A. 9 - 2i
B. -9 + 2i
C. 9 - 4i
D. -9 + 4i
Answer: B
Mathematics
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Provide an appropriate response. Find the standard deviation for the scores:21 32 28 25 23 30 26 28 27 28
A. 3.06 B. 26.8 C. 10.4 D. 3.22
Mathematics
Solve the equation.2r + 2 = 20
A. 16 B. 20 C. 8 D. 9
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.
A. 2x
B. x
C. 2x
D. 2x
Mathematics
Fill in the digits for the given place values in the following whole number.3,845,184hundred thousands tens
A. Hundred thousands 8, tens 8 B. Hundred thousands 8, tens 5 C. Hundred thousands 3, tens 8 D. Hundred thousands 4, tens 1
Mathematics