Answer:
well
Step-by-step explanation:
3 times 15 is 45
then 3 times negative x is -3x
so 45 - 3x = 2x
3 x moved to the other side turns positive
so you have
5x = 45
45÷5
x = 9
Number times landing on green) = 150 * 1/5 = 30
Number times landing on yellow = 150 * 1/5 = 30
Answer 60 times
First, find the scale factor by dividing the first building's real-life height by its model height.
Now, we'll write an equation to find the model height of the second building.
Here is an equation where 
represents the real-life height of a building, 
represents the scale factor, and 
represents the model height of the same building.
Fill in the information we already know.
Divide both sides by .
So, the model height of the second building is 
inches.
Answer:
So, this triangle PQR can be broken into two right triangles, PNQ and PNR, with legs PQ = 39, PN =15, and QN = ? and PR = 17, PN = 15, and NR =? respectively.
Let's solve for what is easier first:
Since we know that 5-15-17 is a Pythagorean triplet, we can infer that NR is 5....like I said earlier, it is a right triangle, so this guess holds true.
Here comes the interesting part:
Now, we have one part of QR, which is QN.
The other part can be solved by using the Pythagorean theorem.
It is (39^2-15^2)^(1/2)..which gives you 36, the square root of 1296, which happens to be the difference between the squares of 15 and 39.
SO, QR = QN + NR
5+36 = 41
QR = 41.
Hope this helps!
I'm not 100% sure, but I believe the answer is A. x²-5/4x+1
