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2 years ago

What is the value of 3x +2 when x = 5

Mathematics

2 answers:

Vesna [10]2 years ago

7 0

Step-by-step explanation:

<h2>hope it helps you have a nice day</h2>

Bingel [31]2 years ago

5 0

Answer:

Step-by-step explanation:

Always put questions like these with an equal sign

3x + 2 = ?

plug in x value (x = 5)

3(5) + 2 = ?

solve

15 + 2 = ?

answer

17 = ?

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Help please:Suppose that x and y inversely, and x=10 when y=8 write the function that models the inverse variation

jarptica [38.1K]

SOLUTION

From the question, we are told that y varies inversely as x

This is mathematically written as

$\begin{gathered} y\propto\frac{1}{x} \\ \propto\text{ is a sign of proportionality } \end{gathered}$

Now, we will remove the proportionality sign and replace it with equal to sign =

If we do this, we will intoduce a constant k

$\begin{gathered} y\propto\frac{1}{x} \\ y=k\times\frac{1}{x} \\ y=\frac{k}{x} \end{gathered}$

So we have the formula

$y=\frac{k}{x}$

We will substitute the values of x for 10 and y for 8 into the formula to get k, we have

$\begin{gathered} y=\frac{k}{x} \\ 8=\frac{k}{10} \\ k=8\times10 \\ k=80 \end{gathered}$

Now, we will substitute k for 80 back into the formula to get the inverse function, we have

$\begin{gathered} y=\frac{k}{x} \\ y=\frac{80}{x} \end{gathered}$

Hence the answer is option C

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1 year ago

Penny's garden has alength of 16ft. and the width is 5 ft. with a rectangular fountain in the middle that measures 5 ft by 9 ft.

lilavasa [31]

First we need the whole garden:

16 x 5 = 80

Now we need to fountain:

5 x 9 = 45

Now to find our answer:

80 - 45 = 35

So our answer is B. 35ft²

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2 years ago

Consider the equation 4+2(5x-8) = ax +b.

vlada-n [284]

Answer:

a = 10, b = -12

Step-by-step explanation:

4+2(5x-8) = ax +b

4 + 10x - 16 = ax + b

10x - 12 = ax + b

Infinitely many solutions when:

a = 10

b = -12

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3 years ago

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Westkost [7]

Answer:

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Step-by-step explanation:

r = term2/term1 = 8/9

8/9 < 1 so convergent

Sum = 9/(1 - 8/9)

= 9/(1/9) = 81

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2 years ago

The average rate of a printer is 4 seconds per page. At this rate, how many pages will be

Ludmilka [50]

60 divided by 4 is 15 15 multiplied by 3 is 45 pages

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2 years ago

What is the value of 3x +2 when x = 5​

What is the value of 3x +2 when x = 5