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3 years ago

15

At a currency exchange rate, 3 U.S dollars can be exchanged for 5 Japanese Yin. How many U.S dollars will you receive for 1 Japa

nese Yin?

1 answer:

adelina 88 [10]3 years ago

4 0

0.6 yin. Have a goodnight!!

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An incoming MBA student took placement exams in economics and mathematics. In economics, she scored 81 and in math 88. The over

HACTEHA [7]

Answer:

An incoming MBA student do better in Mathematics exam.

Step-by-step explanation:

We are given that an incoming MBA student took placement exams in economics and mathematics. In economics, she scored 81 and in math 88.

The overall results on the economics exam had a mean of 74 and a standard deviation of 7, while the mean math score was 69, with a standard deviation of 10.

And we have to find that in which exam did she do better.

<em>Firstly, Let X = results on the economics exam</em>

<em>So, X ~ N(</em> $\mu=74,\sigma^{2} = 7^{2}$ <em>)</em>

<em>Also, let Y = results on the mathematics exam</em>

<em>So, Y ~ N(</em> $\mu=69,\sigma^{2} = 10^{2}$ <em>)</em>

For finding in which exam did she do better, we will find the z score for both the exams of MBA student because the higher the z score, the better is the student performance in that exam.

The z-score probability distribution is given by;

Z = $\frac{X-\mu}{\sigma}$ ~ N(0,1)

where, $\mu$ = mean score for respective exams

$\sigma$ = standard deviation

<u>The z-score of Economics exam is calculated as</u><u>;</u>

Since we are given that the student score 81 in economics exam,

So, z-score = $\frac{81-74}{7}$ = 1 {where $\mu=74$ and $\sigma =7$ }

<u>The z-score of Mathematics exam is calculated as;</u>

Since we are given that the student score 88 in mathematics exam,

So, z-score = $\frac{88-69}{10}$ = 1.9 {where $\mu=69$ and $\sigma =10$ }

AS we can clearly see that the z score of Mathematics exam is higher than that of Economics exam, so the student do better in Mathematics exam.

5 0

3 years ago

Derivative of sqrt(x^2-5) times sin x

Molodets [167]

This involve the compound and the product rule.
product is f`g+fg`
compound is f`(g(x)) * g`(x)

compound is used to derive the sqrt so in this case the compound of the sqrt is the f`

im tired of typing so heres a photo.

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3 years ago

Find the mode of the data.<br> 41, 38, 37, 34, 37, 43, 37, 39, 41, 37

77julia77 [94]

Answer:

Step-by-step explanation:

37

8 0

3 years ago

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The graph shows the rate at which the depth of the water in a pond is changing over time. On a coordinate plane, a graph titled

lawyer [7]

Answer:

Step-by-step explanation:

The key to solving this question is to find the distance bwtween the two points given

distance=y2-y1/x2-x1

(2,4)(4,8)

2=x1,4=y1

4=x2

8=y2

8-4/4-2

4/2=2

The depth of the water is increasing by 2 ft each minute

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3 years ago

Question 14(Multiple Choice Worth 5 points)

ddd [48]

Answer:

Find all polar coordinates of point P where P = (5 , -pi+%2F6 ).

There are two sets of possibilities.

(1) Same (positive) magnitude and an angle that is the same as the given angle, or differs from the given angle by an even multiple of pi:

P = (5, -pi%2F6%2B2n%2Api )

(2) Opposite (negative) magnitude and an angle that differs from the given angle by an odd multiple of pi:

(-5, -pi%2F6%2B%282n%2B1%29pi)

answer is: (5,-pi%2F6+%2B+2n%2Api) or (-5, -pi%2F6%2B%282n%2B1%29pi)

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3 years ago

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