Solve the problem.A circle with a radius r contains a triangle whose base passes through the center of the circle and whose height is r. Express the shaded area in terms of r and ? as a completely factored polynomial.
A. ?(r + 1)2
B. r2(? - 1)
C. ?(r - 1)2
D. r2(? + 1)
Answer: B
Mathematics
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Multiply.(-0.6x6)(-0.4x7)
A. 0.24x13 B. 0.24x42 C. -0.24x13 D. -0.24x42
Mathematics
Solve the equation graphically. Round to the nearest thousandth.log3
= 5
A. 5.916 B. 6.601 C. 6.583 D. 5.933
Mathematics
Find the equation of the line described, and express your answer in the specified form.Perpendicular to the line 
; passes through the point (2, 5); slope-intercept form
A. y = 7x - 19
B. y = - 7x - 19
C. y = - 
x - 
D. y = - 7x + 19
Mathematics
Factor completely. If the polynomial cannot be factored, say it is prime.x4 - 625
A. (x2 + 25)2 B. (x2 - 25)2 C. prime D. (x2 + 25)(x + 5)(x - 5)
Mathematics