Chemists measure the acidity of an aqueous solution using pH. The pH is pH=-log-10[H^+] where pH is a measure of hydrogen ion concentration [H^+] measured in moles of hydrogen per liter of a solution. Find the pH of a solution if [H^+]=5.5x10^-12.

After an earthquake, 1/4 of all claims were paid within a month. Of the remaining claims not paid 4/5 of them were paid within the second month. What fraction of claims were paid in the second month?

Express 8.15 as a mixed number.

The sales tax in Ontario is 13%. Janis pays a total of $32.77 for a fishing pole. Find the cost of the fishing pole before sales tax.

A water slide is a straight ramp 25 m long that starts from the top of a tower. If the angle the slide forms with the top of the tower is 33°, determine the height of the tower. Round your answer to the nearest meter. a. 30 m c. 24 m b. 25 m d. 21 m

The length of a rectangle is twice the width. The perimeter is 90 inches. What is the rectangle's area? You write the equation 2w + 2w + w + w = 90 for the word problem. You solve and get 15. What is the answer to the problem? A) The area is 450 in2.

What is the best estimate for the length of a baseball bat? A. 24 inches B. 3.5 feet C. 200 centimeters D. 3 meters

How to graph a standard form equation

A trap for insects is in the shape of a triangular prism the area of the base is 3.5 in.² and the height of the prism is 5 inches what is the volume of the trap

In a bowl, there are 3 peaches, 2 apples, 6 lemons, and 4 plums. If 1 piece of fruit is to be selected at random, what is the probability it will be a lemon?

How many 1 3/4 foot pieces of ribbon can be cut form piece of ribbon that is 36 feet long