Solve the problem.On a sunny day, a tree and its shadow form the sides of a right triangle. If the hypotenuse is 
long and the tree is 28 meters tall, how long is the shadow?
A. 21 m
B. 45 m
C. 63 m
D. 49 m
Answer: A
Mathematics
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Simplify. Assume variables represent nonnegative values.
A. 3x2
B. 3x
C. 3xy
D. 3xy2
Mathematics
Provide an appropriate response.Explain how (p + q)2 differs from p2 + q2 by expanding (p + q)2.
What will be an ideal response?
Mathematics
The sum of measures of the angles of a polygon is 900°. How many sides does it have?
(a) 7 (b) 8 (c) 9 (d) 10
Mathematics
Determine whether the vectors 
and 
are equivalent.A(9, 9), B(11, 17), C(9, 4), and D(11, 12)
A. Equivalent B. Not equivalent
Mathematics