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tigry1 [53]
2 years ago
12

Kara uses 3 1/2 cups of flour to make 2 dozen cookies. How many cups of flour will she need to make 60 cookies?

Mathematics
1 answer:
satela [25.4K]2 years ago
6 0

Answer:

15 3/4

Step-by-step explanation:

Take 60 divided by 12 and hit equal the answer will be 5. then divide 3 1/2 by 2 which equals 1.75 then add 3.5 plus 3.5 plus 1.75 which equals 15 3/4

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natka813 [3]
We have that
<span> 5x/7=22
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3 years ago
In a large population of college-educated adults, the mean IQ is 118 with a standard deviation of 20. Suppose 200 adults from th
cricket20 [7]

Answer: 0.0793

Step-by-step explanation:

Let the IQ of the educated adults be X then;

Assume X follows a normal distribution with mean 118 and standard deviation of 20.

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P(X > 120) = 1 - P(X < 120)

Standardize the mean IQ using the sampling formula : Z = (X - μ) / σ/sqrt n

Where;  X = sample mean IQ; μ =population mean IQ; σ = population standard deviation and n = sample size

Therefore, P(X>120) = 1 - P(Z < (120 - 118)/20/sqrt 200)

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The P(Z<1.41) can then be obtained from the Z tables and the value is 0.9207

Thus; P(X< 120) = 1 - 0.9207

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3 0
3 years ago
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