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3 years ago

Which which phrase is a description of 4n+9

Mathematics

1 answer:

Strike441 [17]3 years ago

8 0

Answer:

For example, if N represents a number, then N + 9 is the number that is 9 greater than N.

So if N represents the number 3, then N + 9 is the number 12.

If N represents the number 7, then N + 9 is the number 16.

Here are 2 important terms for you to understand: Algebraic Expression and Algebraic Equation.

In the previous example, N + 9 is called an algebraic expression because N can represent any number.

If we write it this way: N + 9 = 12, we are writing an algebraic equation.

In an equation, N represents a specific number, not any number.

N + 9 = 12 means N is a number which, when added to 9, must give the answer 12.

So N can only be the number 3 because only 3 + 9 is equal to 12.

Step-by-step explanation:

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Pls help me if you can I really need help

mafiozo [28]

Answer:

y = 1/10x

Step-by-step explanation:

We see that it intersects points (60,6), (120,12), and (0,0)

y = mx + b

m = 6/60 = 1/10

b = 0

y = 1/10x

8 0

3 years ago

What is the number sentence for "1 less than N is the sum of Z and 2"?

s344n2d4d5 [400]

$\rule{50}{1}\large\textsf{\textbf{\underline{Question:-}}}\rule{50}{1}$

What is the number sentence for "1 less than n is the sum of z and 2?"

$\rule{50}{1}\large\blue\textsf{\textbf{\underline{Answer and how to solve:-}}}\rule{50}{1}$

❖ First, Notice it says "1 less than n". This expression indicates that

we subtract 1 from n, which looks as follows:-

$\Large\textit{n-1}$

❖ Now, It also says "the sum of z and 2". This indicates that we add z and

2:-

$\Large\textit{z+2}$

❖ Now, Combine these two little expressions into one equation:-

$\implies\sf{n-1=z+2}$

<h3>Good luck with your studies.</h3>

#TogetherWeGoFar

$\rule{300}{1}$

6 0

2 years ago

An item cost 50 is marked up 20% off.Sales tax for the item is 8%.What is the final price including tax?

Alex787 [66]

$64.80 50+20%+8% tax then you get 64.80

5 0

4 years ago

Can someone please help me

salantis [7]

Using Pythagorean theorem

$\\ \sf\longmapsto P^2=H^2-B^2$

$\\ \sf\longmapsto P^2=6^2-5^2$

$\\ \sf\longmapsto P^2=36-25$

$\\ \sf\longmapsto P^2=11$

$\\ \sf\longmapsto P=3.2$

4 0

2 years ago

Read 2 more answers

Correct answer get the BRAINLIEST ANSWER!

OLga [1]

Here is how I completed the problem:

I started by creating a ratio:

$\frac{x}{0.18} + \frac{360}{0.10} = \frac{x+360}{0.15}$

Where 'x' is the desired amount of the 18% solution of sulfuric acid.

From here, I solved for 'x':

 $\frac{0.10x}{0.018} + \frac{360(0.18)}{0.018} = \frac{x+360}{0.15}$
$\frac{0.10x}{0.018} + \frac{64.8}{0.018} = \frac{x+360}{0.15}$
$\frac{0.10x+64.8}{0.018} = \frac{x+360}{0.15}$
$0.15(0.10x+64.8) = 0.018(x+360)$
$0.015x+9.72 = 0.018x+6.48$
$0.003x = 3.24$
$x = 1080$

∴You will need to add 1080ml of 18% Sulfuric Acid in order to obtain a 15% solution.

8 0

3 years ago