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natima [27]
3 years ago
11

HELP ASAPP PLEASE!!!!!!!!!!!!!!

Mathematics
2 answers:
mario62 [17]3 years ago
5 0
I believe that 1 and 3 are the correct answers
zmey [24]3 years ago
4 0

Answer:

I & III

Step-by-step explanation:

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Find the area of the triangle.<br> If necessary, round your answer to the nearest hundredth.
valkas [14]
Hello, I hope this makes sense, thanks

6 0
2 years ago
How is 1/x + 2 - 4/2x +1 equivalent to - 2x + 7 / (x + 2)(2x + 1)
DanielleElmas [232]

We have,


\frac{1}{x + 2}  -  \frac{4}{2x + 1}  \\

Since the denominator isn't same we cannot directly perform any arithmetic operation on the terms, in order to be able to do that we must make the denominator same,

It's like the way we have,
\frac{2}{3}  +  \frac{4}{9}   \\

You know you cannot just add the terms and write the answer as,
\frac{8}{12}  \\
It completely wrong.

each of the terms have different values when when added doesn't gives 8/12.

Let me prove that to you by converting them into decimal values,

so
\frac{2}{3}  = 0.67 \\  \\ and \\  \\  \frac{4}{9}  = 0.43
Adding these two gives, 1.1

and
The result we had earlier equates to,
\frac{8}{12}  =  \frac{4}{3}  = 1.33 \\

You see the results are not equal.

So there must be something wrong.

And the wrong this here was not making the denominators equal,
To do that you basically multiply 2/3 with a 3/3 which may look stange at first but it does gives you same denominator as 4/9 in the form of 6/9.

Now you can add the numerators up and leave the denominator as it is which will give 10/9 = 1.1

Back to you question to show that the terms sperated by = are equal we must show one is identical to another.


Let's do this using the Right hand side,

\frac{( - 2x + 7)}{(x + 2)(2x + 1)}  \\  \\  =  \frac{(2x + 1) -4 (x + 2)}{(x + 2)(2x + 1)}  \\  \\  =    \frac{(2x + 1)}{(x + 2)(2x + 1)}  -  \frac{4(x + 2)}{(x + 2)(2x + 1)}  \\  \\  \frac{1}{x + 2}  -  \frac{4}{2x + 1}




Now this value is clearly equal to the the one on the left hand side of "=" .


3 0
3 years ago
Find the constant of proportionality k in the equation y = 24x
Alekssandra [29.7K]

Answer:

The value of k is 24

Step-by-step explanation:

y = 24x

The equation for a direct variation is

y = kx

The constant of proportionality is k

y = 24x

The value of k is 24

6 0
3 years ago
What is the slope of the line that passes through the points (-10, -4)(−10,−4) and (10, -29) ?(10,−29)? Write your answer in sim
irga5000 [103]

Answer:

The answer is -1.25

Hope that helps. x

Step-by-step explanation:

3 0
3 years ago
What is the answer to<br><br> 6x–2x+8=20
11111nata11111 [884]

Answer:

x = 3

Step-by-step explanation:

First, simplify by subtracting 2x from 6x:

6x - 2x + 8 = 20

4x + 8 = 20

Then, solve for x:

4x + 8 = 20

4x = 12

x = 3

So, the answer is x = 3

5 0
3 years ago
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