Approximate the square root. Round to the nearest tenth, if needed.
A. 2664.5
B. 73
C. 78
D. 730
Answer: B
Mathematics
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Find the principal unit normal vector N for the curve r(t).r(t) = (2 + t)i + (3 + ln(cos t))k, -?/2 < t < ?/2
A. N = (-cos t)i - (ln(cos t))k B. N = (cos t)i + (sin t)k C. N = (-sin t)i - (cos t)k D. N = (-cos t)i - (tan t)k
Mathematics
Solve the problem.Richard's team wants to plant 1197 trees in 7 months. How many trees per month do they need to plant?
A. 342 trees B. 171 trees C. 181 trees D. 178 trees
Mathematics
Perform the indicated operations. Simplify when necessary.(-7 + 17) + (-7 + 23)
A. -6 B. 26 C. -20 D. 54
Mathematics
Solve.
- 
= 
A. -4
B. 4
C. 5
D. 
Mathematics