Step-by-step explanation:
x²/(x²-9) + 1/(x-3) = 1/(4x-12)
4x² + 4(x+3) = 1
4x² + 4x + 11 = 0
Since the discriminant is negative, there are no real solutions.
Answer:
22.5 miles per hour
Step-by-step explanation:
<u>Given system of equations</u>
5(s-w)=900
4(s+w)=900
<u />
<u>Set equations equal to each other</u>
5(s-w)=4(s+w)
5s-5w=4s+4w
s-5w=4w
s=9w
<u>Solve for w using the substitution s=9w</u>
4(s+w)=900
4(9w+w)=900
4(10w)=900
40w=900
w=22.5
Therefore, the speed of the wind is 22.5 miles per hour
Answer:
4
Step-by-step explanation:
t = d/r
t = 280/70
t = 4 hours
Hi!
We can solve this by setting up a proportion

Solve for x by cross multiplying.
19 x 60 = 1140
1140/38 = 30
You can type
30 words in 60 secondsHope this helps! :)
Answer:
12.87 12.1 12.07 12.07
Step-by-step explanation: