Here are the scores that Jenna has received on her seven quizzes:
16, 13, 20, 16, 12, 17, 18
What is the standard deviation rounded to the
nearest tenth?

eww xbox also eww dayz

step-by-step explanation:

just for that im not answering

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)

96 cm is the answer.