Answer: It is a difference of two squares, and it factors to (3x-7)(3x+7)
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Explanation:
We can write the 9x^2 as (3x)^2 since
(3x)^2 = (3x)*(3x) = (3*3)*(x*x) = 9x^2
The 49 can be written as 7^2 because 7^2 = 7*7 = 49.
This means 9x^2 - 49 is the same as (3x)^2 - 7^2. We have a difference of two squares.
The difference of squares factoring rule is
a^2 - b^2 = (a-b)(a+b)
which we have a = 3x and b = 7 in this case
So,
a^2 - b^2 = (a-b)(a+b)
(3x)^2 - 7^2 = (3x-7)(3x+7)
9x^2 - 49 = (3x-7)(3x+7)
Side note: This is the same as (3x+7)(3x-7). We can multiply two numbers in any order.
Answer:
10 mi
Step-by-step explanation:
In this question you have to use Pythagorus Theorem. a²+b²=c²
a = 15
b = 20
So, 15²+ 20² = c²
= 225 + 400 = 625
So Ferris to Butte is 
which is 25.
So now you would do 15 + 20 to find out Wayne's distance. 35 - 25 = 10.
Hope it made sense and I didn't waffle
Answer:
It would be 11
Step-by-step explanation:
If you look at the 2 x 11 = 22
and that goes on with it on 7 and 9.
Hope this helps!!
3/11, all you have to do is add both numbers and put one of them over the sum, that will get you the probability of drawing that color.
Answer:
<h2> 110</h2>
Step-by-step explanation:
<h2> because it is between 100 & 120 </h2>
