Evaluate the following: −3 − (−8).
1 answer:
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Work shown above! Shaded region is the enclosed area
1. The shape of the distribution is: B. skewed left.
2. he five-number summary is: 0, 14, 17, 18, 20.
<h3>What is Left-skewed Distribution?</h3>If the data distribution that is represented by a box plot is left-skew (negatively skewed), the median will appear closer to the third quartile (Q3) of the box plot. The median is at the point where a vertical line divides the box into two.
Part 1: The box plot shows that the median is close to the third quartile, therefore, the shape of the distribution is described as: B. skewed left.
Part 2: The five-number summary include:
Min. value = 0
Q1 = 14
Median = 17
Q3 = 18
Max. value = 20.
Learn more about left-skewed distribution on:
#SPJ1
Answer:
10
Step-by-step explanation:
Here it's given that the area of the shaded region is 48 u² and we need to find out the value of x .
The given figure is made up of two rectangles where the smaller one is inscribed into the bigger one .
- The area of shaded region will be equal to the difference of the areas of the two rectangles , that is equal to 48 u² .
- The area of rectangle is length × breadth .
- The dimensions of bigger rectangle is (x+3)(x-4) and that of smaller one is 3 × x .
So that ,
ar(bigger) - ar(smaller) = 48
[ (x+3) (x-4)] - 3(x) = 48
[ x² - 4x +3x -12 - 3x ] = 48
x² -4x -12 -48 = 0
x² - 4x - 60 = 0
x² - 10x + 4x - 60 = 0
x( x -10) +4(x -10) = 0
(x +4)(x-10) = 0
x = -4,10
- Since sides can't be negative ,
x = 10