Three times a first number minus a second number equals negative forty. the first number plus twice the second number equals negative four a. define variables and formulate a system of linear equations from this situation. b. what are the numbers

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

Select the correct answer. employee earnings per month($) 1 1,200 2 2,600 3 1,800 4 1,450 5 3,500 6 2,800 7 12,500 8 3,200 which measure of spread is best for the data in the table? a. range b. quartiles c. interquartile range d. mean absolute deviation