15. multiply the following:
a. (3x − 2)(2x +1)

 6x^2 Plus x - 2

Step-by-step explanation:multiply 3x first with (2x+1)

=6x²+3x

then multiply -2 with (2x+1)

= -4x-2

then add both equations

answer =6x²-x-2

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)

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: