Marissa gives her friends a clue to the number she was thinking of. She told them that when her number is tripled and added to 9, the result is 48. What is the number she is thinking of? A. 39
B. 13
C. 11
D. 3

answer: 88

step-by-step explanation:

55% are girls and 45% are boys : ) hope this

step-by-step explanation:

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)