The half-life of a certain substance is 87 days. If there is 600 kg of the substance to start with, how much is left after 430 days?
Equation: y=
Solution: y=
(round to 3 decimal places)

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

Multiplying fractions by whole number 5 x 1/3=?

Isaac wants the equation below to have no solution when the missing number is placed in the box. which number should he place in the box?