8. name the property of addition that the following equation shows. 345 + (452 + 254) = (345 + 452) = 254

The regular price of a child's entry ticket to a water park is $6 less than that for an adult's. The park offers half off all entry tickets during the off-peak season.

If 400 bricks measuring 81" by 31" are required to build a wall 42 ft. high, how long is the wall? feet.

What is the future value of $1,740 in 16 years assuming an interest rate of 6.75 percent compounded semiannually?

Consider the numbers 3/10 and 4/13 compare the numbers find a rational number between the two given numbers

What is the value of n? N/3-5=13

Suppose $x$,$y$, and $z$ form a geometric sequence. if you know that $x+y+z=18$ and $x^2+y^2+z^2=612$, find the value of $y$.

A manager checked production records and found that a worker produced 160 units while working 40 hours. In the previous week, the same worker produced 138 units while working 36 hours.

What is a balanced equation using numbers 9,7,2,1,6?

Part of the population of 10,800 hawks at a national park are building a nest. A random sample of 72 hawks shows that 12 of them are building a nest. Estimate the number of hawks building a nest in the population.

Olivia has $220 to buy presents for her 3 sisters and 2 nephews. She wants to spend $10 more on each sister than she spends on each nephew.