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netineya [11]
3 years ago
7

What doexs this equal: 3ab-9ab+7ab

Mathematics
2 answers:
AfilCa [17]3 years ago
8 0

Answer:

I think that it equals 1ab. Because 3ab - 9ab= -6ab + 7ab= 1ab



jasenka [17]3 years ago
7 0

So, this question tests wether or not you know how to combing "like terms".


Like terms are terms (thing inbetween +or-) that have the same variables.

Since all three terms contain "ab" we can add and subtract them.


So, 3ab-9ab = -6ab

-6ab+7ab=1ab


1ab is the correct answers

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The midpoint of AB is M(1, 3). If the coordinates of A are(4,1), what are the coordinates of B?
Oxana [17]

Answer:

B(-2,5)

Step-by-step explanation:

\frac{x + 4}{2}  = 1 \\ 2 \times  \frac{x + 4}{2}  = 1 \times 2 \\ x + 4 = 2 \\ x = 2 - 4 \\ x =  - 2 \\  \frac{y + 1}{2}  = 3 \\ 2 \times  \frac{y + 1}{2}  = 3 \times 2 \\ y + 1 = 6 \\ y = 6  -  1 \\ y = 5

Hope that this is helpful.

Have a nice day.

6 0
2 years ago
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alukav5142 [94]
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7 0
3 years ago
Use completing the square to solve the equation x2 - 10x = -8.
Kay [80]

Answer:

x^2 - 10x + 25 = 17

Step-by-step explanation:

Please use " ^ " to denote exponentation:

x^2 - 10x = -8

x^2 - 10x + 25 = 17

x^2 - 10x + 25 = -8

x^2 - 10x - 25 = -33

Begin with x^2 - 10x = -8.  Here's the process for completing the square:

1.  Take half of the coefficient of x and square the result:

    (1/2)(-10) = -5, and then (-5)^2 = + 25

2.  Add this 25 to the first two terms of x^2 - 10x = -8 and also to the      constant -8:    x^2 - 10x + 25 = -8 + 25, or     x^2 - 10x + 25 = 17

3.  Match this result to one of the given possible answers.  Turns out that the given possible answer matching our result is the first one:

x^2 - 10x + 25 = 17

     

7 0
2 years ago
What’s 25 divided by 5?
Gnom [1K]
Really that’s your question :> the answer is 5
3 0
3 years ago
Read 2 more answers
Reduce 36/45 to lowest terms and write the denominator in the blank.
Firlakuza [10]

Answer:

4/5

Step-by-step explanation:

Step 1:

36/45 = 12/15

Step 2:

12/15 = 4/5

Answer:

4/5

Hope This Helps :)

5 0
3 years ago
Read 2 more answers
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