Cora drew 2 regular triagles. each side of the first triamgle was 9 centimeters long. each side of the second triangle was 21 centimetrs long. in centimeters what was the difference between the perimeters of the two triangles

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

Joanie wrote a letter that was 1 1/4 pages long. katie wrote a letter that was 3/4 page shorter then joagies letter. how long was katies letter