Which property of real numbers is shown below?

3 + ((-5) + 6) = (3 + (-5)) + 6

Joelle would like to tip her hairdresser 20%. If her haircut costs $38.00, which expression should she use to find the tip amount?

Solve the problem using the formula below: Interest = 2yc / m (n+1) Given a note for $1,000, with 24 equal monthly payments, and a 7.5% true annual interest rate is charged. What is the principal plus interest payment?

Joanna has 45 postcards in her postcard collection, which is 180% of the number of postcards Kyle has. How many postcards does kyle have?

A student is attempting to solve a multi-step equation. Sample mathematical work is shown below. Which statement best applies to the sample mathematical work? Given the equation 35x - 10 = 5, I must solve for x.

Determine whether the underlined numerical value is a parameter or a statistic. explain your reasoning. upper a survey of 42 out of hundreds in a dining hall showed that modifying 40.5 % with underline enjoyed their meal.

The time required to complete a job varies inversely with the number of people working if it took 5 painters 3 days to paint a house, how long would it take 1 painter?

A rectangular swimming pool has an area of (70x+10) square feet. Find possible dimensions of the pool.

If the store purchases a product at a wholesale cost of $1.65, and it is sold at $2.20, what is the gross profit percentage? (formula: gross profit percentage = [ (retail - cost) divided by retail] x 100)

You select a card at random from the cards that make up the word replacement without replacing the card, you choose a second card. find the probability of choosing a vowel.

jake hase a mac 11 and want to go on a shooting with 8 magazines and 25 bullets in each magazine, how many bullets are in the mac 11? and how many people can he end if he missed 90 shots because he is a mobile kid?