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MaRussiya [10]
3 years ago
8

Which reason is incorrect?

Mathematics
2 answers:
Tanzania [10]3 years ago
8 0
The last one is incorrect. The correct answer is division. They divided 9 on both sides.
AleksAgata [21]3 years ago
7 0
The SUBTRACTION is incorrect. you’re suppose to do the opposite and add 6 to 12 and get 18. then you do 18/9 and get 2!
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How many dots will figure n have? Explain how you know this.
LenKa [72]
N = ((n-1) + 4) + 4, to my understanding. 
although your answers seem right written in the columns, but your method of applying numbers to equation seems incorrect in 'expand' column. for example, answer for 3 should be something like this...
3   21   17+4
4   25    21+4
hope it helps.
5 0
3 years ago
Read 2 more answers
-8x = 140<br><br> Solve for x
Alekssandra [29.7K]

Answer:

<h2><em><u>x = -17.5</u></em></h2>

Explanation:

-8x = 140

  • Divide both sides by -8

-8x / -8 = 140 / -8

x = ⁻³⁵⁄₂

  • Simplify

x = -17.5

6 0
3 years ago
Read 2 more answers
C is clicked but I'm not sure if that is the answer I just clicked one. I need the answer to both.
elena-14-01-66 [18.8K]

Answer:

I believe that B is the correct answer!

Step-by-step explanation:

The (x+5) can cancel

Then in the numerator (x^2-25) can be factored into (x-5)(x+5) through difference of squares.

Then in the denominator the (x-5)^2 can be stretched out to (x-5)(x-5)

Lastly the (x-5) on the top and bottom will cancel resulting in result B

I hope this helped!

3 0
3 years ago
Read 2 more answers
G
Blababa [14]

9514 1404 393

Answer:

  see below

Step-by-step explanation:

The y-coordinates of the points are the same, so the distance between those points will be the difference of the x-coordinates. The first number line shows those x-coordinates plotted properly. It can be used to find the difference between them.

4 0
3 years ago
How do you solve the compound inequality?
NikAS [45]

Step-by-step explanation:

To solve a compound inequality, first separate it into two inequalities. Determine whether the answer should be a union of sets ("or") or an intersection of sets ("and"). Then, solve both inequalities and graph.

Hopes this helps.

6 0
3 years ago
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