Question

Please help me with this I tried but I am failing to find wright number question 4

Answer 1

Answer:

5, 5. 8, 8, 9

Explanation:

The five cards are:

5 _ _ _ _

Range = 4Range=4

Median = 8Median=8

Mean = 7Mean=7

Required

Complete the numbers

First, we have:

Range = 4Range=4

This is calculated as:

Range = Highest - LowestRange=Highest−Lowest

So, we have:

4= Highest - 54=Highest−5

Solve for Highest

Highest = 4 +5Highest=4+5

Highest = 9Highest=9

So, we have: 5 _ _ _ 9

Next: Median = 8Median=8

This implies that the middle number is 8

So, we have: 5 _ 8 _ 9

Mean = 7Mean=7

Mean is calculated as:

Mean = \frac{\sum x}{n}Mean=

n

∑x

Let the two missing numbers be a and b.

So, we have:

Mean = \frac{5 + a + 8 + b + 9}{5}Mean=

5

5+a+8+b+9

\frac{5 + a + 8 + b + 9}{5} = 7

5

5+a+8+b+9

=7

Multiply both sides by 5

5 + a + 8 + b + 9 = 355+a+8+b+9=35

Collect like terms

a + b = 35 - 5 - 8 - 9a+b=35−5−8−9

a + b = 13a+b=13

Since the number are ordered in ascending order.

And we have: 5 _ 8 _ 9

Then: 5 \le a \le 85≤a≤8 and 8 \le b \le 98≤b≤9

a must be between 5 and 8 (inclusive)

b must be between 8 and 9 (inclusive)

Using trial by error:

a = 5\ and\ b = 8a=5 and b=8

Because:

a + b = 13a+b=13

5 + 8 = 135+8=13

Hence, the complete list is: 5, 5. 8, 8, 9

Answer 2

Answer:

6,7,8,9

Step-by-step explanation:

b is 6 c is 7 d is 8 e I 9

this is right