Provide an appropriate response.Find the radius of an arc if the length of the arc is 20.5 cm and the intercepted central angle is 3.2 radians.

A. 10.05 cm
B. 6.41 cm
C. 65.6 cm
D. 0.16 cm


Answer: B

Mathematics

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Find the intersection.-2x + 7y = -8, 2y + 2z = 6

A. x = 14t - 58, y = 4t + 6, z = -4t
B. x = 14t + , y = 4t + 3, z = -4t
C. x = 14t - , y = 4t - 3, z = 4t
D. x = 14t + , y = 4t + 3, z = -4

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Express the function in terms of x.If f(u) = u5 and u = x3 + 8, then express 5u4 ? 3x2 in terms of x alone.

A. x2(15x3 + 8)4 B. 15(x5 + 8)4 C. (15x5 + 8)4 D. 15x2(x3 + 8)4

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Graph the parabola whose equation is given.y = -x2 - 2x + 3

A.

B.

C.

D.

Mathematics

Sketch the right triangle and find the length of the side not given. If necessary, approximate the length to the nearest thousandth.leg = 8, hypotenuse = 14

A. 11.489 B. 4.69 C. 2.449 D. 16.125

Mathematics