Recent content by woof123

Okay here's the question: If you sell widgets for 2 dollars, you sell 300 per day. If you sell them for 4 dollars, you sell 200 per day. assume linear relat., between price (x) and # widgets sold per day (y), write linear equation relating x and y I'm thinking I plot the x,y pairs, then...

OK, I get x, meaning the sides opposite to the x angles are equal. Thanks so much

I can't figure this one out...(I may not have drawn it exactly how it was drawn in the book)

(powers of complex numb.):Find the solution of the following equation whose argument is strictly between 90​ degrees and ​​ 180​ degrees: z^6=i? I don't understand why the modulus of i is 1 and the argument of i can be 90∘ plus any multiple of 360

the volume of a sphere: V=(4/3)pi*r3 To me it looks like it is direct variation with a power function (V/r3=(4/3)*pi)but i don't think that's what they're looking for

I'm not following what justifications mean and which one is bigger or smaller... There is a drawing in this problem but here's the rest: "The scale factor from A to B is 41.6%. Justify why A is a scale drawing of B and why it's an enlargement of B. Include the scale factor in your justification"

I am a newer tutor and trying to deal with a couple issues. How do you approach students who 1)frequently make mistakes (negative signs, etc) and 2) think they understand something but didn't do well on the test of that material

sorry but i don't understand how those two expressions are equal. what happened to the 18

sorry but I don't see how factoring the numberator helps get it into the form you described.y=-(5x+18)/(x+4) I see the function is shifted left 4 (as accomplished by the denominator but I'm not understanding how the numerator gets it shifted down 4 (approx). Is the numberator you have now...

the question is: Rewrite the rational equation y=(-5x-18)/(x+4) to show how it is a transformation of y=1/x. describe transformations looks like it is shifted 4 to left, then stretched by factor of -5x-18. Is that accurate? would you elaborate beyond that?