The formula for the area of a rectangle is a=lw, where l is the length of the rectangle and w is the width of the rectangle. the area of the cell phone screen is 7.5in squared . the width is 2.5 in. find the length of the screen

Length = 3

Step-by-step explanation:

A = lw;

7.5 = 2.5*L

Divide both sides to get L

7.5/2.5 = (2.5/2.5)*L

3 = Length

answer: b. f(x) = (x + 2)^3 (x^2 - 7x + 3)^4

step-by-step explanation:

polynomials always have as many roots as their order. this is a 4th order polynomial- hence 4 roots!

complex roots of polynomials always come in pairs. the quadratic equation has the "+/-" in that will alwaysgenerate m+ni amd m-ni, so 7-2i must be a root of this polynomial equation.

the order of the numerator and denominator are both 2. so the horizontal asymptote is y=a2/b2 =7

verticle asymptotes are the forbidden x-values. f(x) becomes undefined at x=-3 because this value will cause a zero denominator.

a graph of r(x) will have vertical asymptotes at ±1 because these values will make the denominator zero. so the domain of the function cannot include ±1.

you 're wlecome! : )

cretdit to source

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.