A value of sinh x or cosh x is given. Use the definitions and the identity 
to find the value of the other indicated hyperbolic function.cosh x = 
, x < 0, sech x =
A. 
B. - 
C. - 
D. 
Answer: A
Mathematics
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Solve the system of equations by the substitution method.
A. {(-1, 9)} B. {(9, 1)} C. {(1, 9)} D. ?
Mathematics
Factor the trinomial completely. If the polynomial cannot be factored, write "prime."7y4 + 91y3 + 252y2
A. 7y2(y + 4)(y + 9) B. 7y(y2 + 4y)(y + 9) C. 7(y2 + 4)(y2 + 9) D. y2(y + 4)(7y + 63)
Mathematics
Write as a proportion.If 76 pounds of potatoes is enough to feed 190 children, then 84 pounds should be the right amount for 210 children.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Mathematics
Draw the angle.
A. 
B. 
C. 
D. 
Mathematics