What is the missing number for the equation 5x − 2.5 + 6x − 3 = (2x − 1)?

The spring the owner of a sporting good store decreases the price of winter gloves from $10 to $8 each increases the price of swimming goggles from $8 to $10 without doing the math you think the percent decrease in the price of the gloves the same as the percent increase of the goggles explain why or why not

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6