Solve the problem.Anne and Nancy use a metal alloy that is 25.74% copper to make jewelry. How many ounces of a 21% alloy must be mixed with a 30% alloy to form 150 ounces of the desired alloy?
A. 71 ounces
B. 84 ounces
C. 73 ounces
D. 79 ounces
Answer: A
Mathematics
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Solve the problem.The perimeter of a triangle is 62 cm. The triangle is isosceles now, but if its base were lengthened by 2 cm and each leg were shortened by 2 cm, it would be equilateral. Find the base of the original triangle.
A. 18 cm B. 22 cm C. 17 cm D. 20 cm
Mathematics
Write the number in words.24,807
A. Two hundred forty-eight thousand, seven B. Two million, forty-eight thousand, seven C. Two thousand, four hundred eighty-seven D. Twenty-four thousand, eight hundred seven
Mathematics
Simplify the expression.
A. 2?y? - 8 B. ?2y - 8? C. 2y - 8 D. -2y + 8
Mathematics
Convert as indicated.57.8 mm to decimeters
A. 0.578 dm B. 578 dm C. 5780 dm D. 5.78 dm
Mathematics