Questions in mathematics

Questions in mathematics

[Jawaban] If eight times a number is subtracted from eleven times the number, the result is -9. Find the number.

[Jawaban] Melanie’s monthly pay is $5553.60. Each month she uses part of her pay for household expenses and donations. She deposits the rest into her savings account. How much does Melanie deposit into her savings account each month?

[Jawaban] A little more than 43 million households own dogs in the US. The rate of increase in dog ownership is 1.5% each year. Approximately how many households are expected to own dogs in 10 years if this trend continues?

[Jawaban] Daniel has 12 tennis balls. Manuel has twice as many tennis balls as Daniel. Kendra has twice as many tennis balls as Manuel. How many tennis balls do they have in all? Show work, please. Choices: A. 24 B. 36 C. 84 D. 96

[Jawaban] Three cars are parked on a driveway. They are red, blue, and green. 1. List all the different orders they could be parked in. 2. What is the probability that the green car is first?

[Jawaban] Simplify the rational expression: \[ \frac{x^2-49}{x^2+x-56} \] The choices are as follows: A. \(\frac{x-7}{x+8}\) B. \(\frac{x+7}{x+8}\) C. \(\frac{x+7}{x-8}\) D. \(\frac{x-7}{x-8}\)

[Jawaban] What is the product when calculating with Roman numerals? DD × C = ?

[Jawaban] The probability of rolling a 12 with two dice is \(\frac{1}{36}\). What is the probability of not rolling a 12?

[Jawaban] Share 18 in the ratio 2:4.

[Jawaban] The product of two consecutive numbers is 4160. What are the numbers?