Find an equation for the ellipse described.Foci at (±3, 0); x-intercepts are ±4
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: A
Mathematics
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Provide an appropriate response.Evaluate 
= by first converting it to a derivative at a particular x-value.
A. - 
B. 
C. - 
D. - 
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Find the tangential and normal components of the acceleration.r(t) = (t - 7)i + (ln(sec t) - 8)j + 8k, -?/2 < t < ?/2
A. a = (cos t)T + (cos t)N B. a = (csc t)T + (sec t)N C. a = (sec2 t)T + (cos t)N D. a = (sec t tan t)T + (sec t)N
Mathematics
Solve the problem.Sean has $111 in his savings account. After he withdraws $81, what will his balance be?
A. -$30 B. -$192 C. $30 D. $192
Mathematics
Determine the slope, if it exists, of the graph of the given linear equation.y = -4.7x + 3
A. m = -4.7 B. m = -3 C. m = 4.7 D. m = 3
Mathematics