45 children attend preschool the number of two-year-olds is 1/2 the number of three-year-olds the number for your old is the same as the number of three-year-olds

step-by-step explanation:

a rhombus is a parallelogram enjoying his symmetry.

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)