What number belongs in the blank space below in the rececive formula? ?

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

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?