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DanielleElmas [232]

3 years ago

15

N - 4 = 3n + 6 what number does n represent?

2 answers:

pav-90 [236]3 years ago

7 0

Answer:

n = -5

Step-by-step explanation:

n - 4 = 3n + 6

n = 3n + 10

-2n = 10

n = -5

Bogdan [553]3 years ago

6 0

Answer:

-5

Step-by-step explanation:

Lets start by combining some common terms. -4 can be brought over to the right as +4 and 3n can be brought to the left as -3n to make the statement -3n +n = 6+4

Simplifying that, we get -2n = 10

Dividing 10 by -2, we get n = -5

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Damm [24]

Answer:

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Step-by-step explanation:

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3 years ago

Choose the correct algebraic expression to represent: 7 less than n

mariarad [96]

Answer

n-7

Step-by-step explanation:

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3 years ago

What function is increasing? will give brainlist !

Wewaii [24]

Answer:

Option B.

Step-by-step explanation:

Option A.

f(x) = $(0.5)^{x}$

Derivative of the given function,

f'(x) = $\frac{d}{dx}(0.5)^x$

= $(0.5)^x[\text{ln}(0.5)]$

= $-(0.693)(0.5)^{x}$

Since derivative of the function is negative, the given function is decreasing.

Option B. f(x) = $5^x$

f'(x) = $\frac{d}{dx}(5)^x$

= $(5)^x[\text{ln}(5)]$

= $1.609(5)^x$

Since derivative is positive, given function is increasing.

Option C. f(x) = $(\frac{1}{5})^x$

f'(x) = $\frac{d}{dx}(\frac{1}{5})^x$

= $\frac{d}{dx}(5)^{(-x)}$

= $-5^{-x}.\text{ln}(5)$

Since derivative is negative, given function is decreasing.

Option D. f(x) = $(\frac{1}{15})^x$

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= $-2.708(15)^{-x}$

Since derivative is negative, given function is decreasing.

Option (B) is the answer.

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3 years ago

Suppose that a family wants to start a college fund for their child. If they can get a rate of 5.5% , compounded monthly,

chubhunter [2.5K]

The monthly deposit should be $81.38.

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The formula to determine the monthly deposit is:

Future value / annuity factor

Annuity factor = {[(1+r)^n] - 1} / r

Where:

r = interest rate = 5.5 / 12 = 0.4583%
n = 20 x 12 = 240

35,450 / [(1.004583)^240 - 1] / 0.004583 = $81.38

To learn more about how to determine the value of an annuity, please check: brainly.com/question/24108530

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2 years ago

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vodka [1.7K]

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Step-by-step explanation:

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3 years ago