If a=2.b=4c=-1d=3 the problem if -3/4+1/2(ac+bd)

Need asap. solve for the following inequality

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.

Tom is buying topsoil for the flower bed shown below. one bag of topsoil covers 15 square meters. how many bags of topsoil does tom need to cover his flower bed?