Em uma urna ha 17 bolas verdes e 9 bolas vermelha 6 bolas pretas e 5 bolas cinzas. Qual e o numero de bolas que devemos sacar nessa urna para termos certeza de que obtemos pelo menos 13 bolas da mesma cor

If a piece of wood with a length of five feet is cut into six equal pieces, what is the length of each piece?

One cold night the temperature was 0 degrees at 8 p. m. The temperature dropped at a constant rate from 8 p. m. to midnight. At midnight the temperature was - 16.8. What was the temperature at 9 p. m.?

kyle drew a map of his neighbohood he used a scale in which 1 cm equal 2 miles what distance on kyle map should represent the 1.5 miles between his house and the nearest grocery store

A country's population in 1994 was 140 million. In 1998 it was 146 million. Estimate the population in 2011 using the exponential growth formula. Round your answer to the nearest million

The bird population on an island is declining at a rate of 2.2% per year. The population was 3500 in the year 2016. Which answer is the best prediction of the population in the year 2022? a) 2730 b) 3063 c) 3132 d) 3423

Thomas earns x dollars each week walking his neighbor's dog. He also earns $10 allowance each week. Which expression represents the amount of money Thomas has earned after 4 weeks? Select each correct answer.

Suppose the skaters complete one lap around a park that has the shape of a regular pentagon what is the sum of the angles through which they turn

A class consists of 12 students (six boys and six girls) and one teacher. In how many ways can the students sit in a circle?

This equation shows how a sapling's height depends on its age. h = 3a The variable A represents the age of the sapling in years, and the variable h represents the height of the sapling in inches.

Simplify the expression - 4x2 (3x - 7)