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pantera1 [17]
3 years ago
15

What is the mean, median, interquartile range, and standard deviation of 20, 20, 28, 28, 30, 30, 30, 36, 36, 40, 40

Mathematics
1 answer:
Kazeer [188]3 years ago
4 0
Median is 30 range is 20 and that's all I'm gonna do sorry I have my own math hope I helped
You might be interested in
Two mixed numbers with different denominators to get 4 1/3
nalin [4]

Answer:

1 2/3 and 2 4/6

7 0
2 years ago
Identify the percent of change as an increase or a decrease. 4/5 to 3/5
vovikov84 [41]

Answer:

Decrease

Step-by-step explanation:

So, I encourage you to grab a calculator and see for yourself

Put in the function: 4/5 into a standard calculator. You will see that it will come out to .8

Put in the function: 3/5 into a standard calculator. You will see that it will come out to .6

.6 is less than .8, just as 3/5 is less than 4/5.

Another analogy that can be used is seeing the fraction as a real-life object.

Let's say that you make two pies. You cut the pie evenly into five slices. You set them on the table and leave them for whoever wants to eat them. You see that Pie 1 has two slices missing (3/5) and that Pie 2 has one slice missing. (4/5)

3 out of 5 slices are left of Pie 1.

4 out of 5 slices are left of Pie 2.

Pie 1 has less than Pie 2 does.

Hope this has helped!

6 0
3 years ago
You and a friend both work two different jobs. the system of linear equations represents the total earnings for x hours worked a
levacccp [35]
Me :           4 x + 8 y   =  64
My friend:  8 x + 16 y = 128
A ) 4 * 4 + 8 y = 64
     16 + 8 y = 64
     8 y = 64 - 16
     8 y = 48
     y = 48 : 8
     y = 6 ( me and my friend work 6 hours at the second job )
B )  The number of hours we each work at the first job are also the same.
5 0
3 years ago
Mike wants to buy a scooter worth R10000 but cannot afford so he opts for the hire purchase agreement which requires a 13% depos
nlexa [21]

Answer: I think the answer is A

Step-by-step explanation:

6 0
2 years ago
What is the value of x?
rodikova [14]
1) expand the brackets 
6(-3 - x) - 2x = 14
-18 - 6x - 2x = 14
simplify
-18 - 8x = 14
then add 18 to both sides to get the x's on there own
-8x = 32
then divide by -8
x = 32/-8
x = -4

2) multiply everything by 7x
2 + (6 x 7x) + ( 17x × 7x) = 18 x 7x
2 + 42x + 119x^2 = 126x
put everything on one side
119x^2 - 84x + 2 = 0
then use quadratic equation to solve

x = 0.024671849 or 0.6812105039

 
6 0
3 years ago
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