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olya-2409 [2.1K]
3 years ago
5

What is the interquartile for this set of data? 11,19,35,42,60,72,80,85,88

Mathematics
1 answer:
exis [7]3 years ago
4 0

Answer:

55.5

Step-by-step explanation:

find the median - in this case it's 60

then group the upper and lower halves of the data:

(11, 19, 35, 42) 60 (72, 80, 85, 88)

now we find the medians of those sets:

35 + 19/2 = 54/2 =27

80 + 85/2 = 165/2 = 82.5

then subtract those two medians to find the interquartile:

82.5 - 27 = 55.5

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A college parking lot is 140 ft long and 90 ft wide. The college wants to increase the area of the lot by 29% by adding strips o
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The initial dimenssions of the park lot are:

length: 140 ft
width: 90 ft

initial area: 140 * 90 = 12,600 ft^2

Area increased 29% = 12,600 * 1.29 = 16,254 ft^2

width of the strips: x

New length: 140 + x

New width: 90 + x

New area: (140+x)(90+x) = 16,254

Solution of the equation:

12600 + 230x + x^2 = 16254

=> x^2 + 230x - 3654 = 0

Use the quadratic formula.

x = {-230 +/- √[ 230^2 - 4*1*(-3654) ]} / 2 =

x = 14.92

The other solution is negative so it is discarded.

Answer: 15 ft


 
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4 years ago
Select the items the crusaders brought back with them from the East.
gulaghasi [49]

Answer:Jewels, WOOL, SILK


Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
What is tje answer 3m - m
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5 0
3 years ago
Find the complex zeros of <br><img src="https://tex.z-dn.net/?f=%20f%28x%29%20%3D%20%7Bx%7D%5E%7B3%20%7D%20%20-%2013%20%7Bx%7D%5
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6 0
3 years ago
Simplify: 10 • 12 + - 15 divided by 5 + 2 (9-4)
Ket [755]
Alright. So the problem is

10*12+-15/5+2(9-4)

Lets break down what we can for now

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