Perform the indicated operations and simplify the result. Leave the answer in factored form.
? 
A.
B.
C.
D.
Answer: B
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Find the component of u along v if u = (-6,7) and v = (3,4).
Calculate the flux of the field F across the closed plane curve C.F = x2i + y2j; the curve C is the closed counterclockwise path around the triangle with vertices at
and
A. 180
B. 0
C.
D. 60
The pair of triangles is congruent. List the corresponding angles and the corresponding sides.
A. ?1 and ?6; ?2 and ?5; ?3 and ?4; and
;
and
;
and
B. ?1 and ?5; ?2 and ?6; ?3 and ?4; and
;
and
;
and
C. ?1 and ?6; ?2 and ?5; ?3 and ?4; and
;
and
;
and
D. ?1 and ?5; ?2 and ?6; ?3 and ?4; and
;
and
;
and
Solve the problem.An object is thrown upward from the top of a building with an initial velocity of 48 feet per second. The height h of the object after t seconds is given by the quadratic equation
When will the object hit the ground?
A. 5 sec B. 160 sec C. -2 sec D. 2 sec