F(x)=25x^7-x^6-5x^4+x-49

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

One line passes through (-7,-4) and (5,4) . another line passes through the point (-4,6) and (6,-9)

If 1.4% of the mass of a human body is calcium, how many kilograms of calcium are there in a 165-pound man? 1.0 kg ca 5.1 kg ca 1.0 x 102 kg ca 5.1 x 102 kg ca