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3 years ago

Select each expression that is equivalent to 3(n+6).

2 answers:

5 0

Just set each expression equal to 3(n+6). If you get the same answer on both sides (x=x) then that expression is equivalent! :)

Sophie [7]3 years ago

5 0

Answer:

n=-6

Step-by-step explanation:

Equate the equation to zero

3(n+6)=0

Open the bracket

3n+18=0

Substrate 18 from both sides

3n=-18

Divide both sides by 3

n=-6

Therefore the answer to that given equation is -6

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Answer:

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3 years ago

Which expression is equivalent to (7x−5)−(3x−2)?

Alchen [17]

Answer:

D. 4x-3

Step-by-step explanation:

First you subtract the 7x and 3x to get 4x.

Then you subtract the -5 and the -2 to get -3

Therfore, your answer is D

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3 years ago

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3 years ago

What is the 50th term of the arithmetic sequence 3, 7, 11, 15, ... ?

zysi [14]

Answer:

B. 199

Step-by-step explanation:

We are given an Arithmetic sequence : 3, 7, 11, 15, ...

We are supposed to find the 50th term .

So, first consider the formula of nth term in Arithmetic mean:

$a_{n} = a+(n-1)*d$

where

a is first term of sequence

n is term position

d is common difference

$a_{n}$ = the term you are supposed to find

Now,

a = 3 ( first term )

n = 50 th term ( given )

d = 7-3 = 11-7 = 4(common difference

Substitute these value in the formula given above

⇒ $a_{50} = 3+(50-1)*4$

⇒ $a_{50} = 3+(49)*4$

⇒ $a_{50} = 3+196$

⇒ $a_{50} = 199$

Hence ,The 50th term of given arithmetic sequence is 199

So, OPTION B is correct .

5 0

3 years ago

Pls help plss any mods pls

Ierofanga [76]

Answer:

adbe

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers