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2 years ago

Which expression is equivalent to 5(x + 9)? 5x + 9 5x + 45 x + 45 x + 9

Mathematics

1 answer:

nevsk [136]2 years ago

5 0

Answer:

5x+45

Step-by-step explanation:

It would be 5x+45 because

5*x=5x

5*9=45

5x+45

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Fred solved the equation 8(3x – 7) = -6(x + 7) + 4 as shown.

OleMash [197]

Answer: He added 4 to a negative 42 and said it was 46 but its supposed to simplify to -38. X=3/5

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2 years ago

Given a geometric sequence with a1 = 6 and r= 2/3 write an explicit formula for an the nth term of the sequence.

fomenos

the explicit formula for aₙ the nth term of the sequence will be: $a_{n}=6\times (\frac{2}{3})^{n-1}\\$

Step-by-step explanation:

The explicit formula of geometric sequence is of the form:

$a_{n}=a_{1}r^{n-1}$

where a₁ is the first term and r is the common ratio.

We are given:

a₁ = 6

r = 2/3

Putting values in the formula:

$a_{n}=a_{1}r^{r-1}\\a_{n}=6\times (\frac{2}{3})^{n-1}\\$

So, the explicit formula for aₙ the nth term of the sequence will be: $a_{n}=6\times (\frac{2}{3})^{n-1}\\$

Keywords: Explicit formula for geometric sequence

Learn more about Explicit formula for geometric sequence at:

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2 years ago

PLEASE HELP ME W THIS QUESTION

FrozenT [24]

Answer:

im fairly certain the answer is C

Step-by-step explanation:

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3 years ago

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What is the coefficient of the variable in the expression 6-4x-8x+2

Daniel [21]

I think the trick is to add the two middle terms together. (And the 2 end terms).

8 - 12x

The variable is x. The coefficient is - 12.

8 is a constant.

The coefficient always goes with a variable.

3x^2 + 2x + 5

Nothing can be combined. The leading coefficient is 3 (which goes with the greatest power of the variable x^2 in this case) and the other coefficient is 2. 5 is a constant.

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2 years ago

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ValentinkaMS [17]

(20n+3)
n = number of hours = 1
(20(1)+3) = 23
$23

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3 years ago