Use properties of exponents to simplify the expression. First, express the answer in exponential form. Then, evaluate the expression.23 ? 22

A. 25; 12
B. 5 ? 2; 10
C. 25; 32
D. 26; 64

Answer: C

Mathematics

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One of the values r (radius), d (diameter), V (volume), or S(surface area) is given for a particular sphere. Find the indicated value. Leave ? in your answer.S = 196? m2; r = ?

A. 49 m B. 7 m C. 7? m D. 14 m

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Mathematics

Find the value of the variable that satisfies the equation.x - 3 = 1

A. x = 4 B. x = 8 C. x = -8 D. x = -4

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Mathematics

Solve the problem.Let T(x, y) = 16x2 - 2xy + 16y2 be the temperature at the point (x, y) on the ellipse   0 ? t ? 2?. Find the minimum and maximum temperatures, Tmin and Tmax, respectively, on the ellipse.

A. Tmin = 496; Tmax = 528
B. Tmin = 240; Tmax = 272
C. Tmin = 0; Tmax = 32
D. Tmin = ; Tmax = 

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Mathematics

Write the rational expression in lowest terms.

A. x - 2 B. x - 4 C. x + 2 D. x + 4

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Mathematics