Three friends share 4 packs of Expo Markers. How much of the pack will each friend receive?
1 answer:
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Hi there!
2x - 4y = 9
Begin by isolating the y variable by moving 2x to the right-hand side of the equation. (Subtract 2x from both sides):
2x - 2x - 4y = 9 - 2x
-4y = 9 - 2x
Further isolate by dividing both sides by -4:
-4y / (-4) = (9 - 2x) / (-4)
y = -9/4 - 2x/(-4)
Simplify further:
y = -9/4 + 1/2x
y = 1/2x - 9/4
The "b" value is the y-intercept, therefore:
x = 0 at y = -9/4
<u>Corrected Question</u>
Points X and Y are endpoints of a diameter of Circle W. Point Z is another point on the circle. Find the probability that XZY is a right angle.
Answer:
Probability=1
Step-by-step explanation:
<u>Theorem</u>
- If an Inscribed angle intercepts a semicircle, the angle is a right angle.
Given that X and Y are endpoints of a diameter of Circle W and point Z is on the circle's circumference.
I have prepared a diagram which is attached.
Then, XZY is an angle which intercepts a semicircle.
By the theorem above, XZY is a right angle.
Therefore, the probability that XZY is a right angle =1
