what does this mean 405 (8) in math?

Solve the equation below: ln x - ln 5 = - 1

Simplify the expression. 7a-5 b3

Dennis spent $5 less on lunch than he spent on dinner. Dennis spent at most $12 on dinner. Write and solve an inequality to find how much Dennis spent on lunch.

Is a percent a number?

How do you recognize if a binomial is a difference of perfect squares?

Explain how do you know that in * 6,273 = 6,273 the? will be 1

Classify the polynomial 3x^5 by degree

Which system has no solution? A. y = - 3x + 8 6x + 2y = - 4.5 B. y = 9x + 6.25 - 18 + 2y = 12.5 C. y = 4.5x - 5 - 3x + 2y = 6 D. y = 3x + 9 x = 8y = 12.3

mr. brown wants to withdraw 1,000 from his bank in ten dollar bills. how many ten dollar bills should he receive

In a survey of 364 children aged 19-36 months, it was found that 91 liked to eat potato chips. If a child is selected at random, find the probability that he/she does not like to eat potato chips