You are given a prescription for a hundred ml of a 15% hydrochloric acid solution the pharmacy carries 90% hydrochloric solution how many mls of the concentration of solutions are needed to fill this prescription

If q represents the quantity of solution needed, you require

... 0.90q = 0.15×(100 mL)

... q = (0.15/0.90)×(100 mL)

... q ≈ 16.7 mL

You actually need 16 2/3 mL of concentrated solution.

pls refer ro the top for answer

the height of the surface increases from the center out to the sides of the road.

step-by-step explanation:

as we move out we move away from the x-axis.

and as mentioned in the problem statement that height of a road increases when we move away from the center x.

hence proved that 3rd option

the height of the surface increases from the center out to the sides of the road.

is the correct option.