The figure below shows two half-circles at the end of the rectangle with the dimension show which is the closest to the area of the figure in square inches a. 93 b.140 c. 86 d 150

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?