Use your graphing calculator to find the x-intercepts of the function to the nearest tenth.f(x) = 2x2 + 8x + 7

A. -1.3, -2.7
B. -0.6, -1.4
C. 0.7, -4.7
D. -3.3, -4.7


Answer: A

Mathematics

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Use the regression formula for the data below to estimate the value of .    x 1.37 3.39 4.96 6.73 y 44.22 39.28 36.71 32.82

What will be an ideal response?

Mathematics

Find the mass of the wire that lies along the curve r and has density ?.r(t) = (10 cos t)i + (10 sin t)j + 10tk, 0 ? t ? 2?; ? = 9

A. 20? units
B. 180? units
C. 18? units
D. 1800? units

Mathematics

Solve. Write the solution set using set-builder notation and using interval notation. Graph the solution set. x + 1 < 12

A. {xx ? 11}; [11, ?)

B. {xx < 11}; (-?, 11)

C. {xx ? 11}; (-?, 11]

D. {xx > 11}; (11, ?)

Mathematics

Graph the linear equation.y = 5x

A.

B.

C.

D.

Mathematics