Solve the problem.The perimeter of a triangle is 46 cm. The triangle is isosceles now, but if its base were lengthened by 7 cm and each leg were shortened by 7 cm, it would be equilateral. Find the base of the original triangle.
A. 13 cm
B. 6 cm
C. 20 cm
D. 5 cm
Answer: B
Mathematics
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Add.(4x2 - xy - y2) + (x2 + 9xy + 7y2)
A. 3x2 - 10xy - 8y2 B. 5x2 + 8xy + 6y2 C. 4x2 + 9xy + 7y2 D. 5x2 + 10xy + 8y2
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Find the first four terms of the binomial series for the given function.(1 + 6x2)3
A. 1 + 18x2 + 18x4 + x6 B. 1 + 18x2 + 54x4 + 162x6 C. 1 + 18x2 + 108x4 + 216x6 D. 1 + 18x2 + 180x4 + 1512x6
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Find the amount of each payment needed to accumulate the indicated amount in a sinking fund. Round to the nearest cent.
$6,400, money earns 8% compounded annually, 10 years
A. $384.51 B. $485.57 C. $512.51 D. $441.79
Mathematics
Solve the problem.Find the dimensions of a rectangle whose perimeter is 30 feet and whose area is 50 square feet.
A. 6 ft by 9 ft B. 5 ft by 10 ft C. 4 ft by 11 ft D. 4 ft by 9 ft
Mathematics