To find a percentage increase of 15%, you can multiply the original value by 1.15.
To find a percentage increase of 20%, you can multiply the original value by 1.2.
117.7 * 1.15 = 135.355
So if she orders 15% extra tile, she will order around about 135.355 square feet.
117.2 * 1.2 = 141.24
And if she orders 20% extra tile, she will order around about 141.24 square feet.
Any number between those two values will be the amount of tile she might order.
Basically expand
use FOIL (a way to remember distributive property)
first outer inner last
that is th eorder to multiply them
First: x times 2x=2x²
Outer: x tmes 9=9x
Inner: -8 times 2=-16x
last: -8 times 9=-72
add them
2x²+9x-16x-72
2x²-7x-72
Answer:
20.25
Step-by-step explanation:
i think its asking for the long side
the pythagorean theorem states that in a right triangle a^2+b^2=c^2
a is 19
b is 7
c is the long side
19^2= 361
6^2= 49
361+49=410
410 =c^2
square root of 410 = ~20.25
You can multiply the number by itself that’s what it means