2 years ago

What is the value of the first term in the following arithmetic sequence? -9,-2,5,12

Mathematics

1 answer:

Soloha48 [4]2 years ago

3 0

Answer:

Step-by-step explanation:

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I dont understand this problem

Fiesta28 [93]

Answer:

D and F

Step-by-step explanation:

$x^{2}+4x+4=12$ can be rewritten as $x^{2} +4x-8=0$ .

From there you can use the quadratic formula $x=\frac{-b±\sqrt{b^{2}+4ac } }{2a}$ (ignore the A, I can‘t seem to remove it), where a=1, b=4, and c=-8.

$x=\frac{-4±\sqrt{4^{2}-4(1)(-8)} }{2(1)}$

Then you get $x=\frac{-4±\sqrt{16+32}}{2}$

Then you get $x=\frac{-4±\sqrt{48} }{2}$

So $x=-2±\frac{4\sqrt{3} }{2}$

Which means $x=-2+2\sqrt{3}$ or $-2-2\sqrt{3}$ which are choices D and F.

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1 year ago

In 1990, the population of a town was about 5,000 people. Each year for the next 10 years the population increased by about 500

kvasek [131]

The answer is.....D. 8,000.

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3 years ago

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6 5 -3 -2 -1 2 3 4 5 6 -2 -3 Equation:

Ann [662]

Answer:

y=3x+2

Step-by-step explanation:

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2 years ago

HELP NOW

Brilliant_brown [7]

Answer:

$112.75

Step-by-step explanation:

5% of 118.65=5.9

118.65-5.9=112.75

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3/5=x/11 solve for x give your answer as an improper fraction in its simplest form

Westkost [7]

I hope my answer help you in your question

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3 years ago

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