1) what number is 20% of 40?

2) 40% of what number is 15?

3) what percent of 75 is 27?

4) 0.2 is what percent of 16?

5) 19.6 is 24.5% of what number?

Write the name of the period that has the digits 486 in 751,486

Suppose that a mineral body formed in an ancient cataclysm-perhaps the formation of the earth itself - originally contained the uranium isotope 238U (which has a half-life of 4:51 109 years) but no lead, the end product of the radioactive decay of

Gas prices in Cook county are at $3.30 per gallon. If a market scientist predicts a 20% increase in the price of gas in the coming month, what will the price of gas be?

El entrenamiento de basquet se una situación de una institución educativa debe elegir a uno de los dos deportistas que están en la banca para que ingrese al campo en un partido decisivo durante los juegos deportivos escolares nacionales.

Is the simplified form of 2√3 - 2√3 rational? Yes No

How many cans of paint are needed to cover an area of 2,200 square units if one can of paint covers an area of 400 square units? 12 of 60

2y-3x=-27 5y+3x=6 Solve x and y

Alex ate breakfastat a restaurant. The bill came to $77.75. If she left a 20% tip, how much was the tip?

When a number is decreased by 54%, the result is 28. What is the original number to the nearest tenth?

How can I solve y=2x^2+14x-15