Two different isosceles triangle with perimeter for 4a+b

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market