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WINSTONCH [101]
2 years ago
14

Last year, 85% of students participated in the school fundraiser. Using this data, what would be the BEST prediction of how many

of the 320 students will participate in the fundraiser this year?

Mathematics
2 answers:
SpyIntel [72]2 years ago
8 0

Answer:

C. 272

Step-by-step explanation:

Since we know 85% of the students participated last year we can assume the same amount will participate this year so to find the answer you simply do the total number of students (320) multiplied by 85% or .85 to get the best guess of how many students will participate this year.

Softa [21]2 years ago
3 0
It’s 272because you would multiply 320 by .85 and you will get 272
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to exercises 4.141 and 4.137. suppose that y is uniformly distributed on the interval (0, 1) and that a &gt; 0 is a constant. a
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The moment-generating function for y is given as eⁿᵇ - eⁿᵃ / n(b-a) and derivation of  moment-generating function of y is e-1/t

Given that,

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The moment generating function is eⁿᵇ - eⁿᵃ / n(b-a)

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Triangle X Y Z is cut by line segment C D. Line segment C D goes from side X Y to side Y Z. The length of C D is 15, the length
Marizza181 [45]

The length of DZ is 4 units ⇒ 3rd answer

Step-by-step explanation:

Triangle X Y Z is cut by line segment C D, where

  • C lies on side XY and D lies on the side YZ
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  • The length of X Z is 18
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We need to find the length of DZ

In Δ XYZ

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∵ CD // XZ

∴ m∠YCD = m∠YXZ ⇒ alternate angles

∴ m∠YDC = m∠YZX ⇒ alternate angles

In Δs YCD and YXZ

∵ m∠YCD = m∠YXZ

∵ m∠YDC = m∠YZX

∵ ∠Y is a common angle

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∴ \frac{YC}{YX}=\frac{CD}{XZ}=\frac{YD}{YZ}

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∵ YZ = YD + DZ

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Let us use the ratio of the corresponding side

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- By using cross multiplication

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∴ 100 + 5 DZ = 120

- Subtract 100 from both sides

∴ 5 DZ = 20

- Divide both sides by 5

∴ DZ = 4 units

The length of DZ is 4 units

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