Estimate the sum as indicated. Then answer the question.Estimate the following sum by first rounding to the nearest ten. Does the estimate give you reason to doubt the stated sum?
A. Estimate: 200 ; yes
B. Estimate: 210 ; yes
C. Estimate: 210 ; no
D. Estimate: 200 ; no
Answer: A
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In a right triangle, find the length of the side not given. Let c represent the length of the hypotenuse. Give an answer to the nearest tenth if necessary.b = 20 cm, c = 25 cm
A. a = 5 cm B. a = 45 cm C. a = 15 cm D. a = 225 cm
Evaluate the radical expressions or indicate that the root is not a real number.
A. 64 B. -4 C. 4 D. not a real number
Find a rectangular equation for the plane curve defined by the parametric equations.x = t3 + 1, y = t3 - 15; -2 ? t ? 2
A. y = x3; for x in -3 ? x ? 1 B. y = - x2; for x in -4 ? x ? 4 C. y = - x - 16; for x in -7 ? x ? 9 D. y = x - 16; for x in -7 ? x ? 9
Use the Binomial Theorem to expand the binomial and express the result in simplified form.(2x - 1)5
A. 32x5 - 16x4 + 8x3 - 4x2 + 2x - 1 B. 32x5 + 10x4 - 40x3 - 40x2 + 10x - 1 C. 32x5 - 80x4 + 80x3 - 40x2 + 10x - 1 D. (4x2 - 4x + 1)5