Answer:
=
Step-by-step explanation:
This triangle is the same as a right triangle rotated around.
Pythagorean Theorem applies to this (because it's a right triangle)



x=10.39
The answer is 3km as there is 9 secs between it and distance = time/3 and 9/3 =3 so distance =3
Answer:
y=mx+b
Step-by-step explanation:
The new mixture has a total volume of 5 L + 9 L = 14 L.
70% of the 5 L alcohol solution is alcohol, so that it contributed 3.5 L of alcohol to the mixture. The pure water contributed no alcohol. So in the mixture, the concentration of alcohol is
3.5 L / 14 L = 0.25, or 25%
Answer: 18w^2 - 6w + 4
Explanation:
(4 + 7w^2) - (6w - 11w^2)
= 4 + 7w^2 - 6w + 11w^2
= 18w^2 - 6w + 4