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navik [9.2K]
2 years ago
13

Which of the following is an arithmetic sequence?

Mathematics
1 answer:
zimovet [89]2 years ago
6 0

-8~~,~~\stackrel{-8+2}{-6}~~,~~\stackrel{-6+2}{-4}~~,~~\stackrel{-4+2}{-2}\qquad \begin{cases} a_1=-8\\ d = +2 \end{cases}

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Can somebody please please help me !!!! I don’t know if the answer is A,B,C,D ! Help ASAP !!!
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Answer:

pretty sure its b

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
8) Factor each sum or difference of cubes completely.<br> a. 8x3 + 27
ASHA 777 [7]

Answer:

\large\boxed{(2x+3)(4x^2-6x+9)}

Step-by-step explanation:

8=2^3\\\\8x^3=2^3x^3=(2x)^3\\\\27=3^3\\\\8x^3+27=(2x)^3+3^3\qquad\text{use}\ a^3+b^3=(a+b)(a^2-ab+b^2)\\\\=(2x+3)\bigg((2x)^2-(2x)(3)+3^2\bigg)=(2x+3)(4x^2-6x+9)

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Quick plz help asap marking brainliest for first answer as long as you include steps !!!
Akimi4 [234]

Answer:

a=2.48

c=9.52

Step-by-step explanation:

a+c=12

4a+7.5c=72.5 Given


a+c=12

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-3a-6.5c=-60.5 simplify


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a=-20.17+2.17c divide it by 3

now you would take that equation and plug it into an equation you already have since you have something to plug in for a, the easiest one to do is a+c=12

(-20.17+2.17c)+c=12 plug in the equation


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c=9.52 divide both sides by 3.17

now since you have found c, you can plug it in to you equation to solve for a now (use the ones from the second step).  I am using the equation a+c=12.

a+9.52=12 plug in the variable and solve for a


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a=2.48

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3 years ago
Eight less than a number is no more than 14
myrzilka [38]

Answer:

x - 8 ≤ 14

Step-by-step explanation:

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marishachu [46]

Answer:

x = \frac{43}{6}

Step-by-step explanation:

Given

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Multiply through by 8 ( the LCM of 4 and 8 ) to clear the fractions

6x - 40 = 3 ( add 40 to both sides )

6x = 43 ( divide both sides by 6 )

x = \frac{43}{6}

3 0
3 years ago
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