18 less than half a number is 6

What is (28 + 7 + 6 + 3) x 1/2 show your work

Factor the polynomial expression x6 – x3 – 20

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.