The price was marked down. If the price was reduced, we have to sum with the other value to find the original price:
![85 + 20 = \boxed {105}](https://tex.z-dn.net/?f=85%20%2B%2020%20%3D%20%5Cboxed%20%7B105%7D)
The original price was $105.
Since the rectangles are similar. The ratio of their sides will be the same.
So, we can write:
![x:18 = 4:6 \\ \\ \frac{x}{18}= \frac{4}{6} \\ \\ x = \frac{4}{6} * 18 = 12](https://tex.z-dn.net/?f=x%3A18%20%3D%204%3A6%20%5C%5C%20%20%5C%5C%20%0A%20%5Cfrac%7Bx%7D%7B18%7D%3D%20%5Cfrac%7B4%7D%7B6%7D%20%5C%5C%20%20%5C%5C%20%20%20%0Ax%20%3D%20%20%5Cfrac%7B4%7D%7B6%7D%20%20%2A%2018%20%3D%2012)
Therefore, the left side of the bigger rectangle will be 12 units in length.
Answer:
3x - 11
Step-by-step explanation:
( x - 4 ) + ( 2x − 7 )
*it's better to take away the parenthesis
x - 4 + 2x - 7
Combine like terms
( x with 2x, and -4 with -7)
3x - 11
And you cannot simplify it anymore
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Answer:
Acute Angled Triangle.
Right-Angled Triangle.
Obtuse Angled Triangle
Step-by-step explanation:
a right angle would be 90° angle
obtuse would be over 90°
acute would be smaller than 90°
hope this helps!
X^2 - 18x + 81 = 0
x^2 - 9x - 9x + 81 = 0
x(x - 9) - 9(x - 9) = 0
(x - 9)(x - 9) = 0
(x - 9)^2 = 0
x - 9 = 0
x = 9