Prob ( guessing right) = 0.25 . Get 1 point.
Prob( guessing wrong) = 0.75. Lose 0.5 points.
Expected value = 1(0.25) + (-0.5)(0.75)
= -0.125 answer
Y = x - 7 ---------- (1)
5x + 2y = 7 ------ (2)
Sub (1) into (2):
5x + 2(x -7) = 7
5x + 2x - 14 = 7
7x - 14 = 7
7x = 7 + 14
7x = 21
x = 3 ----- -sub into (1)
y = x - 7
y = 3 - 7
y = -4
Ans: x = 3, y = -4
It's an expression which <span>shows that two quantities are not equal.</span>
<span>67 and 24/100 but if you want to simplify it is 67 and 6/25</span>
Answer:
417/2921
Step-by-step explanation:
6/23-15/127
- First, we have to figure out the lcm which is 2921.
- Multiply the denominators so make them 2921.
(127) 6/23 - 15/127(23)
762/2921 - 345/2921
- Subtract the numerators.
417/2921
