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Mashutka [201]
3 years ago
10

A bag contains balls numbered 1 to 20 if one is chosen at random what is the probability that it is prime

Mathematics
1 answer:
sergey [27]3 years ago
3 0

Answer: 8/20 or 40%.

Step-by-step explanation: The prime numbers between 1 and 20 are 2, 3, 5, 7, 11, 13, 17, and 19. 8 in total, so 8/20. Divide 8 by 20 and you get 0.4 which transfers to 40%.

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Degger [83]
10/2 so 5 for 53, 10/4 so 5/2 or 2.5 for 54, and 10/3 or 3.333. For simplicity i divided everything by 10 to remove an extra zero but the answers would still be the same after you reduced
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what is most likely true about the digital grandparents of students that attend fridgemont high? the results of the survey are s
Olenka [21]
More grandparents prefer hard copy over digital copy
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3 years ago
Help me i cant figure this out
scoray [572]
McKenzie's work is correct because on step 3 she added the A and the B correctly.
8 0
3 years ago
The vertices of xyz are x (1,-4)
dexar [7]

Answer:

5. The vertices of ΔX'Y'Z' are (-3, -7), (-6, -4), (-1, -2)

6. The vertices of ΔX'Y'Z' are (6, -7), (3, -4), (8, -2)

Step-by-step explanation:

If the point (x, y) translated by T → (h, k), then its image is (x + h, y + k)

#5

In ΔXYZ

∵ X = (1, -4), Y = (-2, -1), Z = (3, 1)

∵ T → (-4, -3)

∴ h = -4 and k = -3

→ Use the rule above to find the image of the vertices of the Δ

∵ X' = (1 + -4, -4 + -3)

∴ X' = (-3, -7)

∵ Y' = (-2 + -4, -1 + -3)

∴ Y' = (-6, -4)

∵ Z' = (3 + -4, 1 + -3)

∴ Z' = (-1, -2)

∴ The vertices of ΔX'Y'Z' are (-3, -7), (-6, -4), (-1, -2)

#6

In ΔXYZ

∵ X = (1, -4), Y = (-2, -1), Z = (3, 1)

∵ T → (5, -3)

∴ h = 5 and k = -3

→ Use the rule above to find the image of the vertices of the Δ

∵ X' = (1 + 5, -4 + -3)

∴ X' = (6, -7)

∵ Y' = (-2 + 5, -1 + -3)

∴ Y' = (3, -4)

∵ Z' = (3 + 5, 1 + -3)

∴ Z' = (8, -2)

∴ The vertices of ΔX'Y'Z' are (6, -7), (3, -4), (8, -2)

6 0
3 years ago
Simplify the rational expression. Find all numbers that must be excluded from the domain of the simplified rational expression.
BaLLatris [955]

Answer:

y ≠ 9, y ≠ 3

Step-by-step explanation:

y² -12y +27 = (y - 9) (y - 3)

Denominator ≠ 0

y ≠ 9 or y ≠ 3

5 0
3 years ago
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