Find the sum.-16 + 21
A. 37
B. -37
C. 5
D. -5
Answer: C
Mathematics
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Use a calculator to find the acute angle between the planes to the nearest thousandth of a radian.9x + 2y + 4z = -7 and 4x + 7y + 5z = 8
A. 0.824 rad B. 0.746 rad C. 1.550 rad D. 1.413 rad
Mathematics
Write the indicated term of the binomial expansion.(3 - 
)6; middle term
A. -90y
B. -540y
C. -540y
D. 540y
Mathematics
Perform the indicated operations and simplify the result. Leave the answer in factored form.- 
- 
A. 
B. 
C. 
D. 
Mathematics
Provide an appropriate response.Write a system of equations that would be more easily solved using the substitution method than the elimination method. Explain why substitution would be easier than elimination.
What will be an ideal response?
Mathematics