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Alenkasestr [34]
3 years ago
10

Please check my work:

Mathematics
1 answer:
11Alexandr11 [23.1K]3 years ago
8 0

Answer:

1) C (5,-11)

2)A and C

3)B

4)A

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Explain why the expression 9x^3+1/2x^2+3x^-1 is not a polynomial
Nastasia [14]

Answer:

The given expression can't be expressed in polynomial form. Hence, it is not a polynomial.

Step-by-step explanation:

P(x,n) is a polynomial of nth degree if it is of the form,

P(x,n) = a_{0} + a_{1}x + a_{2}x^{2} + a_{3}x^{3} + ......... +a_{n}x^{n}

where n is a finite positive integer and n ∈ N

and 'a_{i}'s are fixed but otherwise arbitrary constants ∀  i = 0(1)n .

Now, the given expression is,

9x^{3} + \frac {1}{2x^{2}} + 3x^{-1}

which  doesn't fit in the above form. Hence, it is not a polynomial.

4 0
4 years ago
Find the 79th term of the following arithmetic sequence. 5,11, 17, 23...
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Answer:

the answer is 479.

Step-by-step explanation:

to make it simpler, pretend you start from 1. 1,7,so on. multiply six by 79, to get 474. but because you are starting from 5 and not 1, you have to add 5 on.

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4 0
3 years ago
Read 2 more answers
What is 42/70 x 20/22
rusak2 [61]

Answer:

6/11 or 0.545

6 0
3 years ago
You want to save for a brand-new car. You put the $5,000 your Grandma gave you when you graduated in an account that pays 6% int
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Answer:

6,744.25

Step-by-step explanation:

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3 years ago
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Rag the operation signs to make the equation true. An operation may be used once. More than once, or not at all × returned to ch
-BARSIC- [3]

Answer:

12/(7-4) + 5 * 3 = 19

Step-by-step explanation:

Given

Untrue Expression: 12 ( 7 − 4 ) + 5 3 = 19

Signs: +−×÷

Required

Use the given signs to make the equation true.

To solve this, the trial and error method will be adopted.

The trial and error method involves trying series of sign combinations in the given expression; whichever works is the right answer.

So, after few attempts the following makes the equation true

12/(7-4) + 5 * 3 = 19

To check if it's true or not; we simply expand the expression on the left hand side. This gives

12/3 + 5 * 3 = 19

4 + 5 * 3 = 19

4 + 15 = 19

19 = 19.

Hence, the sign combinations used in 12/(7-4) + 5 * 3 = 19 is correct.

3 0
3 years ago
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