If u + t = 5 and u-t=2, what is the value of
(u – t)(u² - 12) ?

0.5

Step-by-step explanation:

You know that u-t is 2, so it'll be 2( -12)

Now, system of equations to solve for u.  if u+t=5, this means t=5-u, you can plug it in into u-t=2, so u-(5-u)=2. Now you know that u is 3.5, so do the calculations.

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney