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Goshia [24]
3 years ago
9

I need help with question number 1.

Mathematics
2 answers:
Luda [366]3 years ago
8 0
Answer:

30 and 6

Explanation:

Let the numbers be x and y. Then

<span>x+y=36</span>
<span>x−y=24</span>

Adding the two equations together gives

<span>2x=60</span>

<span>∴x=30</span>

Substituting this back into either of the equations gives <span>y=<span>6</span></span>

sweet-ann [11.9K]3 years ago
7 0
Sum means add.
difference means subtract.

x + y = 36
x - y = 24  Just to make it complete, I finish the problem. Add the two equations.
=======
2x = 60 Divide by 2
x = 60/2
x = 30


x + y = 36 Substitute for x
30 + y = 36 Subtract 30
y = 36 - 30
y = 6

So the solution point is (30,6)

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Dmitry_Shevchenko [17]

Answer:

Kevin's verbal score (610), although, lower than the Quantitative score (700), is comparatively/relatively a better score when compared to the gemeral performance of all people that sat for the same exams.

Step-by-step explanation:

Missing from the question

The mean score for Verbal Reasoning section was 462 with a standard deviation of 119, and the mean score for the Quantitative Reasoning was 584 with a standard deviation of 151.

To truly compare these two scores, we first need to standardize them.

The standardized score for any value is the value minus the mean then divided by the standard deviation.

For the verbal section

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z = (x - μ)/σ = (610 - 462)/119 = 1.24

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standard deviation = 151

z = (x - μ)/σ = (700 - 584)/151 = 0.77

Using the normal distribution tables

P(z < 1.24) = 0.893 = 89.3 percentile

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From the results obtained, Kevin's verbal scores of 610, although lower than the Quantitative score of 700, is 1.24 standard deviations greater than the mean, thereby putting this score in the 89.3 percentile amongst all those that sat for the same verbal section.

The quantitative score of 700 is 0.77 standard deviations greater than the mean, belonging to a percentile of 77.9 of all those that wrote that quantitative section.

Hope this Helps!!!

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3 years ago
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