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s344n2d4d5 [400]
3 years ago
5

The difference of two numbers is 4. Their sum is 18. Find the numbers.

Mathematics
2 answers:
Travka [436]3 years ago
7 0

Answer:

11 and 7

Step-by-step explanation:

Let these two numbers be x and y where x is greater than y.

We can write two equations from the given information:

x - y = 4

and

x + y = 18

If we add them together, the y's cancel out:

x - y = 4

x + y = 18

2x = 22

x = 11

y is 4 less than x, meaning it is 7.

The two numbers are 11 and 7

babymother [125]3 years ago
6 0

Answer:

7 and 11

Step-by-step explanation:

Hope this helps!!!!

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Step-by-step explanation:

When you have an unknown population parameter you can use a sample to delimit an interval in which this parameter is, the interval is called confidence interval and the confidence level is the probability of the parameter being inside the interval. The confidence interval is represented by a pair of numbers, in this case, the pair is (52.8%, 75.0%) and the confidence level is 95%, with that level you can say that you're confident that the mean admission rate is between  (52.8%, 75.0%).

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