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viktelen [127]
3 years ago
9

Graph 9x-6y=1 and 2x-1.3y=21

Mathematics
1 answer:
KengaRu [80]3 years ago
7 0

Answer:

Step-by-step explanation:

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How to solve this task 4×-2+1=3×+5
just olya [345]
4x-2+1=3x+5

Subtract 3x from both sides

x-2+1=5

Same as

x-1=5

Add 1 to both sides

x=6
8 0
4 years ago
The average of three numbers is 25. The average of two of those numbers is 21. What is the value of the third number of the orig
Elza [17]

Answer:

b) 33

Step-by-step explanation:

You reverse the process of finding the second average, 21, which will help you find the original average, 25. First you multiply the second average, 21, to retrace your steps. We do this because the last thing we do when we find the average is divide. when you multiply 21 you get 42. Now you have the value of the first two numbers. Then you experiment with the numbers. To save time I'll get to the point. When you add 33 + 42 you get 75. Then you divide by 3 to get 25. You divide by three because the instructions say there was 3 numbers to start with. Hope this helps.

8 0
3 years ago
Find the argument of the complex number z=1+iv3
elena-14-01-66 [18.8K]

Given:

The complex number is:

z=1+i\sqrt{3}

To find:

The argument of the given complex number.

Solution:

If a complex number is z=x+iy, then the argument of the complex number is:

\theta=\tan^{-1}\dfrac{y}{x}

We have,

z=1+i\sqrt{3}

Here, x=1 and y=\sqrt{3}. So, the argument of the given complex number is:

\theta =\tan^{-1}\dfrac{\sqrt{3}}{1}

\theta =\tan^{-1}\sqrt{3}

\theta =\tan^{-1}\left(\tan \dfrac{\pi}{3}\right)

\theta =\dfrac{\pi}{3}

Therefore, the argument of the given complex number is \theta =\dfrac{\pi}{3}.

6 0
3 years ago
-6(7 + x) plzzzz help
adelina 88 [10]

Answer:

-6x-42

Step-by-step explanation:

Open parenthesis.

-42-6x is what you get once opened.

7 0
3 years ago
Read 2 more answers
How to figure out algebraic probles with 2 x?
Sedaia [141]
Okay Let's say 
2x + 3 = 45
      -3      -3
----------------
2x        = 42
---            ---
2               2                     x = 21 
8 0
3 years ago
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