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8_murik_8 [283]
4 years ago
11

12) Miranda wants to buy as many collectible dolls as possible, for $2.50 each. If she has $45.00 to spend, how many dolls can s

he buy? Which equation BEST represents this situation? A) 45x = 2.5 B) 2.5x = 45 C) x + 2.5 = 45 D) x + 45 = 2.5
Mathematics
1 answer:
jolli1 [7]4 years ago
4 0

Answer:

The answer would be B

2.5x = 45

(x) would be the number of dolls, multiplied by how much each doll costs ($2.50) and the product would be how much she has to spend. Hope this helps!


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<em>probability</em><em> </em><em>of </em><em>getting </em><em>a </em><em>green </em><em>ball=</em><em> </em><em>5</em><em>/</em><em>2</em><em>1</em>

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what

Step-by-step explanation:

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(2, 12)

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P(Y ≥ 15) = 0.763

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Mean =135

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sample size n  = 50

sample mean \overline x = 140

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X \sim N ( \mu \sigma)

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P(X>140) = 1 - P(X ≤ 140)

P(X>140) = 1 - P( \dfrac{X-\mu}{\sigma} \leq \dfrac{140-135}{12})

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P(X>140) = 1 - P( Z\leq0.42)

From z tables,

P(X>140) = 1 - 0.6628

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P(Y ≥ 15) = 1 - ( P(Y=0) + P(Y=1) + P(Y=2) + ... + P(Y=14) )

P(Y \geq 15) = 1 - \begin {pmatrix} ^{50}_0 \end {pmatrix} (0.3372)^0 (1-0,3372)^{50} + \begin {pmatrix} ^{50}_1 \end {pmatrix} (0.3372)^1 (1-0,3372)^{49}  + \begin {pmatrix} ^{50}_2 \end {pmatrix} (0.3372)^2 (1-0,3372)^{48} +...  + \begin {pmatrix} ^{50}_{50{ \end {pmatrix} (0.3372)^{50} (1-0,3372)^{0}

P(Y ≥ 15) = 0.763

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3 years ago
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