7. what is the interquartile range for the data set? 37, 4, 53, 79, 25,48, 78, 65, 5, 6, 42, 61. 8. what is the standard deviation for the data set? 112, 149, 112, 148, 139, 121, 116, 134,148 express your answer as a decimal to the nearest tenth.

Interquartile Range: 47.5

standard deviation for the data set? 112, 149, 112, 148, 139, 121, 116, 134,148

Express your answer as a decimal to the nearest tenth=15.9

answer: (-8,4) are the coordinates of a

step-by-step explanation:

let the side of square abcd is x .

thus the area of square abcd is .

now, by the diagram area of triangle ead= 1/2 × ea × ad = 1/2 × ea × x

( because ad is the side of square)

and, according to the question,

the areas of square abcd and right ead are equal.

⇒

⇒ea=2x

thus, ea: ab=2: 1

therefore, point a divides line segment eb into the ratio 2: 1.

⇒ by sectional formula coordinates of a are,

=

=

=(-8, 4)

thus the coordinates of a are (-8,4)