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suter [353]
4 years ago
5

"If the average cholesterol level is 194 with a standard deviation of 15, what percentage of children have a cholesterol level l

ower than 199? Answers are rounded to the nearest whole percent."
Mathematics
1 answer:
avanturin [10]4 years ago
7 0

Answer:

63%

Step-by-step explanation:

Given the following :

Average cholesterol level or mean (m) = 194

Standard deviation (sd) = 15

what percentage of children have a cholesterol level lower than 199?

P(X < 199)

Assume a normal distribution :

Find the z-score :

Z = (score - mean) / standard deviation

Score = 199

Z = (199 - 194) / 15

Z = 5 / 15

Z - score = 0.3333

P(Z < 0.33) :

Using the z - table ; 0.33 = 0.6293

P(Z < 0.33) = 0.6293

0.6293 * 100% = 62.93%

= 63% (nearest whole percent)

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Identify the vertical asymptotes of f(x) = quantity x minus 4 over quantity x squared plus 13 x plus 36
choli [55]
Expression: f(x) = [x - 4] / [x^2 + 13x + 36].

The vertical asympotes is f(a) when the denominator of f(x) is zero and at least one side limit when you approach to a is infinite or negative infinite.

The we have to factor the polynomial in the denominator to identify the roots and the limit of the function when x approachs to the roots.

x^2 + 13x + 36 = (x + 9)(x +4) => roots are x = -9 and x = -4

Now you can write the expresion as: f(x) = [x - 4] / [ (x +4)(x+9) ]

Find the limits when x approachs to each root.

Limit of f(x) when x approachs to - 4 by the right is  negative infinite and limit when x approach - 4 by the left is infinite, then x = - 4 is a vertical asymptote.

Limit of f(x) when x approachs to - 9 by the left is  negative infinite and limit when x approach - 9 by the right is infinite, then x = - 9 is a vertical asymptote.

Answer: x = -9 and x = -4 are the two asymptotes.

5 0
4 years ago
Read 2 more answers
Determine if the given function is a linear transformation. t(x1, x2, x3) = (−2x2, 6x3)
Zepler [3.9K]
T:\mathbb R^3\to\mathbb R^2 will be linear if for any \mathbf x,\mathbf y\in\mathbb R^3 and constants a,b\in\mathbb R, we have

T(a\mathbf x+b\mathbf y)=aT(\mathbf x)+bT(\mathbf y)

Let \mathbf x=(x_1,x_2,x_3) and \mathbf y=(y_1,y_2,y_3), and let a,b be any two scalars. Then

a\mathbf x+b\mathbf y=(ax_1+by_1,ax_2+by_2,ax_3+by_3)

By definition of T, we have

T(a\mathbf x+b\mathbf y)=(-2ax_2-2by_2,6ax_3+6by_3)
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3 years ago
Which number is equal to 7/10
GrogVix [38]

Answer:14/20

Step-by-step explanation:

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Step-by-step explanation:

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Here only the third option is satisfying this condition.

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Henceforth, the correct answer is the third option.

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Answer:

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Step-by-step explanation:

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