Norma ann planned a rectangular courtyard, as shown in the scale drawing below. she decides to change the width, the shorter side of the courtyard, from 45 ft to 40 ft. which expression finds the change in the scale factor? plss !

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?