Solve the problem.A collection of dimes is arranged in a triangular array with 14 coins in the base row, 13 in the next, 12 in the next, and so on with 1 dime in the last row. Find the value of the collection.
A. $10.50
B. $5.25
C. $1.05
D. $21.00
Answer: A
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Solve.A plot of land in the shape of a right triangle is formed by the intersection of three roads. A developer wants to purchase the land, which is priced at $7200 per acre. Calculate the cost of the land, given the dimensions shown in the figure. (Hint: One acre = 43,560 square feet. Round to the nearest hundred dollars.)
A. $18,200 B. $17,600 C. $17,400 D. $18,900
Given the set sketched on the number line, identify the type of interval (open, closed, half-open, open infinite, closed infinite), write the set using set-builder notation, and write the set using interval notation.
A. half-open interval; {x|2 < x ? 8}; (2, 8] B. closed interval; {x|2 ? x ? 8}; [2, 8] C. open interval; {x|2 < x < 8}; (2, 8) D. half-open interval; {x|2 ? x < 8}; [2, 8)
Solve the linear equation.8(y + 7) = 10y + 56
A. 0 B. 112 C. 56 D. -56
Use a calculator and the change-of-base formula to find the logarithm.
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Please give the answer to two decimal places.
Fill in the blank(s) with the appropriate word(s).