Simplify the expression below. (3-13)²+14/4²-5·2
1 answer:
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ok so you need to pick out a point on the live. i did (10,5). now plug the y coordinate into the y in the equation and the x into the x in the equation. your equation is now 5=m x 10. now think, what multiplied by 10 equals 5? the answer is 0.5 or 1/2. so to show work, divide 5 by 10. 0.5 or 1/2 that is the answer to your problem.
Ok, a fun hack
if f⁻¹(a)=b then f(b)=a
so if f⁻¹(7)=b then f(b)=7
to find b, find x such that f(x)=7
7=0.5(3)^x
times both sides by 2 (or divide both sides by 0.5)
14=3^x
take log₃ of both sides
if f⁻¹(a)=b then f(b)=a
so if f⁻¹(7)=b then f(b)=7
to find b, find x such that f(x)=7
7=0.5(3)^x
times both sides by 2 (or divide both sides by 0.5)
14=3^x
take log₃ of both sides