Answer:
3rd one
Step-by-step explanation:
-7/24, because you can just do this question in reverse to figure out an answer. (3/8 - 2/3)
Answer:
Step-by-step explanation:
x²/a² - y²/b² = 1
center (0,0)
vertex (3,0), so a = 3
focus (9,0)
e = 9/a = 3
directrices: x = ±a/e = ±1
Answer:
800n+1050
Step-by-step explanation:
800(n+1)+250 = 800n+800+250 = 800n+1050.
Hope this helps!
Good luck with your test + I hope you do well on it.
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Answer:
Step-by-step explanation:
Remark
A right triangle with one other angle = 45 degrees is isosceles (two sides are equal). So the bottom line of the square is also s
Formula
s^2 + s^2 = 20^2 Add the terms on the left. Square the right.
Solution
2s^2 = 400 Divide by 2
2s^2/2 = 400/2 Simplify
s^2 = 200 Take the square root of both sides.
Answer
sqrt(s^2) = sqrt(200)
s = 14.1 or s = 10*sqrt(2)