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spayn [35]
3 years ago
7

The sum of two numbers is 12 and their difference is 6. What are the two numbers?

Mathematics
1 answer:
wolverine [178]3 years ago
4 0

Answer:

The two numbers are 9 and 3.

Step-by-step explanation:

x+y=12

x-y=6

---------

2x=18

x=18/2

x=9

9-y=6

y=9-6

y=3

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loris [4]

Using the proportions given in the table, it is found that the percentage of the Northlake residents surveyed that want a new dog park is:

B. About 58%.

<h3>What is a proportion?</h3>

A proportion is a fraction of a total amount, and the measures are related using a rule of three. Multiplying a proportion by 100%, a percentage is found.

Looking at the table, 25% are Northlake residents(which is 43% of the surveyed) who want a new dog park, hence the percentage is given by:

p = 25/43 x 100% = 58%.

Hence option B is correct.

More can be learned about proportions at brainly.com/question/24372153

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4 0
1 year ago
The hourly wages earned by 20 employees are shown in the first box-and-whisker plot below. The person earning $15 per hour quits
agasfer [191]

Answer:

<h2>The mean decreases, and the median remains the same.</h2>

Step-by-step explanation:

Remember that a box plot is made by the quartiles of the distribution, the maximum value and the minimum value. So, from a box plot we can deduct the range, the median and the interquartile range.

In this case, the median remains the same at $9.5 per hour. The median is indicated by the middle line of the box, and you can observe that it doesn't change.

Now, the range of the data set decreases from 7 to 3.

On the other hand, the mean must decrease, because data greater than $11 doesn't exist in the box plot number 2, and the mean is a central measure sensible to those changes.

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8 0
3 years ago
What is the volume of this object?
Nastasia [14]

Answer:

19

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7 0
2 years ago
What is 4 1/8 - 2 2/3 to the nearest whole number
NARA [144]

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Jessica invests​ $250 each quarter in an ordinary annuity with a​ 5% interest rate compounded quarterly. Determine the accumulat
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Answer:

Step-by-step explanation:

Usimg formula for calculating compound interest.

A = P(1+r/n)^nt

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r is the rate = 5%

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