A lamppost is 15 feet high and casts a 23-foot shadow at noon. At the same time, a cell-phone tower next to the lamppost casts a 82-foot shadow. Which proportion can be used to find the height, H, of the cell-phone tower?
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Mathematics
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Find the location of the indicated absolute extremum for the function.Maximum
A. x = -4
B. x = 
C. No maximum
D. x = 0
Mathematics
Multiply and simplify.
A. 
B. 
C. 
D. 
Mathematics
Translate the problem to a system of equations and then solve.Mrs. Boyd has a desk full of quarters and nickels. If she has a total of 13 coins with a total face value of $1.85, how many of the coins are nickels?
A. 9 nickels B. 11 nickels C. 7 nickels D. 6 nickels
Mathematics
Write an equivalent expression. Use an associative law.(9s)t
A. 9(st) B. (s9)t C. 9s + 9t D. t(9s)
Mathematics