Danny is 5 years old and weighs 39.0 pounds. He is sitting on a swing when his sister Stacey pulls him and the swing back horizontally through an angle 
and then stops.
?
?
The figure below is a diagram of the situation.
?
?
This diagram would change if Stacey were to push Danny forward through the angle 
and then hold him in that position. Draw the diagram that corresponds to this new situation.
?
A. 
B. 
C. 
D. 
E. 
Answer: C
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Perform the matrix row operation and write the new matrix.
-2R1 + R2
A. 
B. 
C. 
D. 
Find the area of the circle. Use 3.14 or 
for ? as indicated.Use 3.14 for ?.
A. 103.62 yd2 B. 854.865 yd2 C. 207.24 yd2 D. 3,419.46 yd2
Write the vector v in the form v1i + v2j, given 
and the direction angle ? of v.
= 7, ? = 120°
A. - 
i + 
j
B. 
i - 
j
C. - 
i + 
j
D. 
i - 
j
Solve the problem.The formula 
represents the number of households N, in thousands, in a certain city that had a computer x years after 1990. According to the formula, in what year were there 101 thousand households with computers in this city?
A. 1993 B. 1995 C. 1996 D. 1994