Evaluate the expression.
+ 120.2 ÷ 8(2.1 - 6.8)
Round to the nearest hundredth if necessary.
A. -72.05
B. -65.55
C. -69.04
D. -70.55
Answer: D
Mathematics
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If r(t) is the position vector of a particle in the plane at time t, find the indicated vector.r(t) = (7 ln(4t))i + (6t3)jFind the acceleration vector.
A. a(t) = 
i + 18tj
B. a(t) = - 
i + 36tj
C. a(t) = - 
t-2i + 36tj
D. a(t) = 
t-2i + 36tj
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Use the sum/difference identities to simplify the expression. Do not use a calculator.cos 
cos 
+ sin 
sin 
A. 
B. 
C. - 1
D. 
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This frequency table gives the distribution of ages of 100 people in a small town.
How many people are:10 years of age or older but less than 40 years of age
A. 24 B. 65 C. 51 D. 11
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Find a polynomial with the given zeros.
?
?
A. ?
B. ?
C. ?
D. ?
E. none of these
Mathematics