How many photons with 10 ev are required to produce 20 joules of energy?

The double stem-and-leaf plot, where the stem is in the middle and the leaves are on the other side, shows the high temperatures for two cities in the same week. Use the measures of variation to describe the data in the stem-and-leaf plot.

Square root of 40 to the hundredths

The pH of a particular solution is given by pH = - log (x-2), where x represents the concentration of the hydrogen ions in the solution, in moles per liter.

If john spent 100 dollars more than peter, how much did both spend?

What is equevilint to b/a?

The given expression represents the area. Find the side length of the square. 64r^2-144r+81

The area of a rectangle is 44 m² The width is 3 2/3m

Olivia is organizing a bake sale, and their goal is to raise at least $500. So far they have raise $210.

what setting should be used when doing sum and difference identities with a calculator degrees or radians

If a circumference is 18.84 what is the area rounded to the nearest hundredth