Again here we're using like terms
a) -2x² + 12x² = 10x² (they have the same term that's why I grouped them together)
-4x + 2x = -2x
13 - 25 = -12
So the final answer is 10x² - 2x -12
b) 7x² - (-7x²) = 7x² + 7x² or 14x²
4x - (-3x) = 4x + 3x or 7x
-26 - 15 = -41
The final answer to this one is 14x² + 7x - 41
When using the Law of Sines the ambiguous case can result.
Source:
http://www.1728.org/trigtut2.htm
Scroll to the middle of the page.
Answer:
280
Step-by-step explanation:
<u>Change percentage into decimal:</u>
80% = 0.80
<u>Find 80% of 350:</u>
350 x 0.80 = 280
Assuming he spends all the $24 on renting DVD's we can simply divide the money he has available with the price of each DVD in order to know how many he can buy.
$24/$4 = 6
Jack can rent a maximum of 6 DVD's
