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VladimirAG [237]
3 years ago
9

4 1/4 + 1 2/3 equals​

Mathematics
1 answer:
oee [108]3 years ago
3 0

Answer:

5.91666666667

Step-by-step explanation:

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scores for a qualification exam are nromally distibuted, with a mean of 80 and a standard deviation of 10. to be qualfiied for a
Nesterboy [21]

Lowest score earned to be qualified for an interview is 92.82

X : Marks scored in interview

X ~ N(80,100)

Here we need to find x such that P(X > x) = 0.10

using standard normal table,

we get P( z > 1.282) = 0.10

It's always easy to use Standard normal distribution to solve questions of normal distribution because standard normal is special case of normal distribution with mean 0 and standard deviation 1.

To convert x (which follows Normal distribution) to standard normal use: \frac{x-\mu}{\sigma} \sim N(0,1)

so, z = 1.282 = \frac{x-\mu}{\sigma}

<em>hence,</em>

<em> </em>x = 1.282 * \sigma + \mu \\x = 1.282 * 10+_80 \\x = 92.82 \\

Hence Lowest score earned to be qualified for an interview is 92.82

To learn more about Normal Distribution visit:

brainly.com/question/4079902

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5 0
2 years ago
What is the domain of the following parabola?
yanalaym [24]

First we have to understand what the domain is. In a nutshell the domain is the set of all x values that are represented in any given graph. In this case we do not have a graph but we have the vertex. The x value is 2, therefore: x ≥ 2.


I hope this helps, Regards.




3 0
4 years ago
What does Sin mean in geometry
Darya [45]

Answer:

in mathematics, the sine is a trigonometric function of an angle.

Step-by-step explanation:

The sine of an acute angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse).

Fixed point: 0

Critical point: kπ + π/2

Inflection point: kπ                                                                                                             hope this helps you :)

4 0
4 years ago
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8×105 is how many times as great as 8×10-1?
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Find the exact value using trigonometric identities

840, 79
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4 years ago
PLS HELP!!!! Pointtssss!! The temperature during a very cold day is
grin007 [14]

The type of polynomial that would best model the data is a <em>cubic</em> polynomial. (Correct choice: D)

<h3>What kind of polynomial does fit best to a set of points?</h3>

In this question we must find a kind of polynomial whose form offers the <em>best</em> approximation to the <em>point</em> set, that is, the least polynomial whose mean square error is reasonable.

In a graphing tool we notice that the <em>least</em> polynomial must be a <em>cubic</em> polynomial, as there is no enough symmetry between (10, 9.37) and (14, 8.79), and the points (6, 3.88), (8, 6.48) and (10, 9.37) exhibits a <em>pseudo-linear</em> behavior.

The type of polynomial that would best model the data is a <em>cubic</em> polynomial. (Correct choice: D)

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6 0
2 years ago
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