Existe alguna fraccion entre 2/5 y 3/5? r explica tu respuesta​

For the function, f(x) = -5x 2, find f(-4).

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π