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2 years ago

Twice a number, decreased by nineteen

Mathematics

2 answers:

anzhelika [568]2 years ago

5 0

2n-19 I think is the answer :3

sasho [114]2 years ago

5 0

2x-9 just as the other one said I prefer to use x as a variable when they say of a number I learned this last month it is rly easy once you get used to it

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katen-ka-za [31]

Answer:

6x=6c?

30-=ml

Step-by-step explanation:

I'm sorry if i got this wrong

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2 years ago

What are the first 5 terms of the sequence where a=1 a, a2=2 and an=1/2(a n-1•a n-2)

Sliva [168]

Answer:

$\large\boxed{a.\ 1,\ 2,\ 1,\ 1,\ \dfrac{1}{2}}$

Step-by-step explanation:

We have the recursive formula of a sequence:

$\left\{\begin{array}{ccc}a_1=1\\a_2=2\\a_n=\dfrac{1}{2}(a_{n-1}\cdot a_{n-2})\end{array}\right\\\\\text{thereofre}\\\\a_3=\dfrac{1}{2}(a_2\cdot a_1)=\dfrac{1}{2}(2\cdot1)=\dfrac{1}{2}(2)=1\\\\a_4=\dfrac{1}{2}(a_3\cdot a_2)=\dfrac{1}{2}(1\cdot2)=\dfrac{1}{2}(2)=1\\\\a_5=\dfrac{1}{2}(a_4\cdot a_3)=\dfrac{1}{2}(1\cdot1)=\dfrac{1}{2}(1)=\dfrac{1}{2}$

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2 years ago

Which inequality represents all values of x for which the product below is<br> defined

Gekata [30.6K]

Answer:

Step-by-step explanation:

D is the only option where there's always 0 or positive integers inside the radical. The square root of a negative number is imaginary.

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2 years ago

HELP giving BRAINLIEST !!!!

miss Akunina [59]

One question before I give my answer , Where did it say she stopped?

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2 years ago

Read 2 more answers

Simply (3x³ + 2x-3) - (4x³ - x² + x)

Vinvika [58]

Answer:

$\left(3x^3+2x-3\right)-\left(4x^3-x^2+x\right)=-x^3+x^2+x-3\\\mathrm{Remove\:parentheses}:\quad \left(a\right)=a\\3x^3+2x-3-\left(4x^3-x^2+x\right)\\3x^3+2x-3-4x^3+x^2-x\\-x^3+x^2+x-3$

I hope this is good enough:

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2 years ago