Decide whether each sequence is arithmetic, geometric, or neither. 3, 12, 48, 192,...
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9,-18, 27, -36,... [Select]
375, -75, 15, -3,...
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y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead

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)

320ft

step-by-step explanation:

120 divided by 3 equals 40

40 times 4=160

160 times 2=320