Which best describes the relationship between the lines with equations x + 8y = -1 and – 8x + y = -1? A. same line
B. perpendicular
C. parallel
D. neither perpendicular nor parallel

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How many different ways can you make change for $.50 using only nickels,dimes, and quarters?

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?