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katen-ka-za [31]
3 years ago
14

If the function f is given by f(x)=2x2−4, then which of the following represents the value of c such that f(c)=28?

Mathematics
1 answer:
Zigmanuir [339]3 years ago
4 0
I believe the answer is C. 4
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Bob has a recipe for salad dressing. The recipe says to mix 14 c lemon juice, 18 c mustard, and 14 c vinegar. How much lemon jui
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Answer:

He needs 56c  of lemon juice to make 4 salad dressings.

Step-by-step explanation:

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5 0
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
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Step-by-step explanation:

Let the IQ of the educated adults be X then;

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This is a sampling question with sample size, n =200

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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

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3 0
3 years ago
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