there are 5 more girls than boys in a class if 2 boys join the class, the ratio of girls to boys Will be 5:4 find the (i) number of girls in the class. (ii) find the total number of pupils in the class. (iii) find the probability of selecting a boy as the class prefect​

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

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

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