Find the cross-product and determine whether the proportion is true or false.
= 
A. 4 ? 16; false
B. 8 = 8; true
C. 16 = 16; true
D. 2 ? 32; false
Answer: B
Mathematics
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Solve the problem.A cyclist bikes at a constant speed for 16 miles. He then returns home at the same speed but takes a different route. His return trip takes one hour longer and is 21 miles. Find his speed.
A. 5 mph B. 7 mph C. 6 mph D. 4 mph
Mathematics
Multiply.
? 5
A. 
B. 
C. 
D. 
Mathematics
Describe the orthocentric set of a triangle.
What will be an ideal response?
Mathematics
If AB = 3 and BC = 4 in rectangle ABCD, then the length of diagonal 
is 5.
Answer the following statement true (T) or false (F)
Mathematics