Which expression is equivalent to 45 divided by (2 - x)

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Two corresponding sides of two similar triangles are 3cm and 5cm. the area of the first triangle is 12cm^2. what is the area of the second triangle?

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36