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Zigmanuir [339]
4 years ago
13

The graph of y = square root of 9 - x end square root - 5 is shown below. What are the x-intercept and the y-intercept, and for

what values of x is the function defined?
answers:
x-Intercept: (−16, 0), y-intercept: (0, −2), x ≥ 9
x-Intercept: (−16, 0), y-intercept: (0, −2), x ≤ 9
x-Intercept: (−16, 0), y-intercept: (0, −2), x ≥ −5
x-Intercept: (0, −2), y-intercept: (−16, 0), x ≥ −2

Mathematics
1 answer:
luda_lava [24]4 years ago
8 0

Answer:

x-intercept: (-16,0), y-intercept: (0,-2), x ≤ 9

Step-by-step explanation:

See the graph in the attachment.

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A study of long-distance phone calls made from General Electric Corporate Headquarters in Fairfield, Connecticut, revealed the l
lesya692 [45]

Answer:

The probability that a call last between 4.2 and 4.9 minutes is 0.4599

Step-by-step explanation:

Let X be the length in minutes of a random phone call. X is a normal distribution with mean λ=4.2 and standard deviation σ=0.4. We want to know P(4.2 < X < 4.9). In order to make computations, we will use W, the standarization of X, given by the following formula

W = \frac{X-\mu}{\sigma} = \frac{X-4.2}{0.4}

We will use \phi , the cummulative distribution function of W. The values of \phi are well known and the can be found in the attached file

P(4.2 < X < 4.9) = P(\frac{4.2-4.2}{0.4} < \frac{X-4.2}{0.4} < \frac{4.9-4.2}{0.4}) = P(0 < W < 1.75) = \\ \phi(1.75) - \phi(0) = 0.9599-0.5 = 0.4599

We conclude that the probability that a call last between 4.2 and 4.9 minutes is 0.4599

Download pdf
7 0
3 years ago
The cosst of 4 1 /4 kg of sugar is £68 .find the coast o 1 kg​
ankoles [38]

Step-by-step explanation:

<em>Hi</em><em>,</em><em> </em><em>there</em><em>!</em><em>!</em>

<em>Here</em><em> </em><em>according</em><em> </em><em>to the</em><em> </em><em>question</em><em> </em><em>we</em><em> </em><em>must</em><em> </em><em>find</em><em> </em><em>the</em><em> </em><em>cost</em><em> </em><em>of</em><em> </em><em>1</em><em> </em><em>kg</em><em> </em><em>sugar</em><em>.</em>

<em>Given</em><em> </em><em>that</em><em>:</em>

<em>1</em><em>7</em><em>/</em><em>4</em><em> </em><em>kg</em><em> </em><em>of</em><em> </em><em>sugar</em><em> </em><em>cost</em><em> </em><em>£</em><em>6</em><em>8</em><em>.</em>

<em>then</em><em> </em><em>1</em><em> </em><em>kg</em><em> </em><em>sugar</em><em> </em><em>costs</em><em>,</em>

<em>=</em><em>\frac{68}{ \frac{17}{4} }</em>

<em>after</em><em> </em><em>reciprocal</em><em> </em><em>we</em><em> </em><em>get</em><em>,</em>

<em>=</em><em> </em><em>£</em><em>6</em><em>8</em><em>×</em><em>4</em><em>/</em><em>1</em><em>7</em>

<em>=</em><em>£</em><em>1</em><em>6</em>

<em>The</em><em> </em><em>answer</em><em> </em><em>would </em><em>come</em><em> </em><em>£</em><em>1</em><em>6</em><em>.</em>

<em>Therefore</em><em>, </em><em> </em><em>The</em><em> </em><em>cost</em><em> </em><em>of</em><em> </em><em>1</em><em> </em><em>kg</em><em> </em><em>sugar</em><em> </em><em>is</em><em> </em><em>£</em><em>.</em><em> </em><em>1</em><em>6</em><em>.</em>

<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>

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Answer:

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Step-by-step explanation:

That would be -1(x - 4)^2.

= -(x^2 - 8x + 16)

= -x^2 + 8x - 16.

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Answer:

12

Step-by-step explanation:

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The answer is:
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