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bonufazy [111]
4 years ago
15

Find the 43rd term of the sequence 13.1,3.1,-6.9,-16.9,

Mathematics
2 answers:
ale4655 [162]4 years ago
6 0
The best answer is -406.9
lilavasa [31]4 years ago
4 0
<span> Arithmetic sequence.
a</span>₁ = 13.1; a₂ = 3.1

d = a₂ - a₁ = 3.1 - 13.1 = -10
a₄₃ = a₁ + d(n-1) = 13.1 - 10(43-1) = 13.1 - 10 * 42 = 13.1 - 420 = -406.9

Answer: -406.9

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Sam walks at a rate of 300 ft per minute. How many inches per second does he walk? (1 foot = 12 inches)
bazaltina [42]
300/min
300/60 seconds
300 divided by 60=5
5 ft/second
5ft=60 inches
60 inches/second

Final Answer: B
6 0
3 years ago
Simplify.<br>(4x² – 3x + 2) - (2x² + 5x - 7).<br>​
DiKsa [7]

Answer: 2x² - 8x + 9

Step-by-step explanation: this is our initial equation:

(4x² – 3x + 2) - (2x² + 5x - 7)

the subtraction sign which is to the left values is multiplying to the values into the parenthesis

(-) * (2x² + 5x - 7)

so this factor change the sign to every value into the parenthesis, then we get the following equation.

-2x² - 5x + 7

after this we get this final equation

4x² – 3x + 2 - 2x² - 5x + 7

then we resolve the equation with the similar values

4x² - 2x² = 2x²

– 3x  - 5x  = - 8x

+ 2 + 7 = 9

after this we place values in one equation, and we get the form simplified

2x² - 8x + 9

and this the last equation after resolve all the problems into the parenthesis.

7 0
3 years ago
Read 2 more answers
paul asked to order snacks for an office meeting of 180 people. she decides to order desert squares which come in boxes of 24. s
alekssr [168]

Answer:

27 boxses

Step-by-step explanation:

calculations is shown in the picture

7 0
2 years ago
What is the 9th term of the following geometric sequence? 7/9,-7/3,7,-21,63 ??????
dmitriy555 [2]

Given:

The geometric sequence is:

\dfrac{7}{9},\dfrac{-7}{3},7,-21,63,...

To find:

The 9th term of the given geometric sequence.

Solution:

We have,

\dfrac{7}{9},\dfrac{-7}{3},7,-21,63,...

Here, the first term is:

a=\dfrac{7}{9}

The common ratio is:

r=\dfrac{a_2}{a_1}

r=\dfrac{\dfrac{-7}{3}}{\dfrac{7}{9}}

r=\dfrac{-7}{3}\times \dfrac{9}{7}

r=-3

The nth term of a geometric sequence is:

a_n=ar^{n-1}

Where, a is the first term and r is the common ratio.

Substitute a=\dfrac{7}{9},r=-3,n=9 to find the 9th term.

a_9=\dfrac{7}{9}(-3)^{9-1}

a_9=\dfrac{7}{9}(-3)^{8}

a_9=\dfrac{7}{9}(6561)

a_9=5103

Therefore, the 9th term of the given geometric sequence is 5103.

5 0
3 years ago
Simplify the fraction -24/6 then add -2
Mademuasel [1]

Answer:

-6

Step-by-step explanation:

-24 divided by 6 is -4, so the fraction would be simplified to -4/1, then change to a whole number and subtract 2, which equals -6.

8 0
4 years ago
Read 2 more answers
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