18. On Monday, Mr Tan earned a total of $1260 from the sale of some toys. On the next day, he earned a total of $1736 from the sale of the similar toys. How many such toys were sold on both days?​

Asap i need it now choose all the answers that apply. sex-linked disorders affect males more than females affect females more than males can be carried by females, without being expressed are always expressed in males are caused by genes carried on the x and y chromosomes

Simplify (4x^2 - 8xy + 2y^2) - (9x^2 - 4xy - 7y^2) a. -5x^2 + 4xy + 9y^2 b. -5x^2 - 4xy + 9y^2 c. -5x^2 + 12xy + 4y^2 d. -5x^2 - 4xy - 5y^2

Which of the following circles have their centers in the third quadrant? check all that apply.