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Alex_Xolod [135]
3 years ago
15

What is 3х + 9 = -12???????

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

Answer:

x=-7

Step-by-step explanation:

castortr0y [4]3 years ago
4 0

Answer:

x=-7

Step-by-step explanation:

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Express a^6n/a^3n with positive exponents
Nat2105 [25]
I hope this helps you





a^6n-3n



a^3n
7 0
3 years ago
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TIMED QUESTION NEED HELP FASTWhat values of b satisfy 3(2b + 3)2 = 36?
egoroff_w [7]

Answer:

\frac{-3+ 2\sqrt{3}}{2}\textrm{ and }\frac{-3- 2\sqrt{3}}{2}

Step-by-step explanation:

3(2b+3)^{2}=36\\\frac{3(2b+3)^{2}}{3}=\frac{36}{3}\\(2b+3)^{2}=12

Taking square root both sides, we get

\sqrt{(2b+3)^{2}}=\pm \sqrt{12}\\2b+3=\pm \sqrt{4\times 3}\\2b+3=\pm 2\sqrt{3}\\2b+3-3=\pm 2\sqrt{3}-3\\2b=-3\pm 2\sqrt{3}\\b=\frac{-3\pm 2\sqrt{3}}{2}\\b=\frac{-3+ 2\sqrt{3}}{2}\textrm{ or }b=\frac{-3- 2\sqrt{3}}{2}

Therefore, the values of b are:

\frac{-3+ 2\sqrt{3}}{2}\textrm{ and }\frac{-3- 2\sqrt{3}}{2}

5 0
3 years ago
Read 2 more answers
Mike travels 13 miles per 2 hours on his bike.
LiRa [457]

Answer:

It took Markus half an hour to drive home from work.  He averaged 34 miles per hour.  How far does Markus live from his work?

Solution

We are given that it takes 1/2 an hour for the trip.  This is a time:

       t  =  1/2

We are given that he averages 34 miles per hour.  This is a rate:

       r  =  34

We are asked how few he has traveled.  This is a distance.  We use the d=rt equation:

       d  =  rt

           =  (34)(1/2)

           =  17

Markus lives 17 miles from work.

Now try one by yourself.  If you want to see the answer, put your mouse on the yellow rectangle and the answer will appear.

Exercise 1

The current along the beach is moving towards the south at 1.5 miles per hour.  If a piece of debris is placed into the water, how far will the current take it in 6 hours?

Step-by-step explanation:

4 0
3 years ago
I need help pls I don’t understand it
Montano1993 [528]
12x12 + 12x12 = 288 = root of 288= 16.97
7 0
3 years ago
A classmate is 22 years younger than your instructor. Write an equation that will determine your classmate’s age (y) if given yo
Dima020 [189]

Hey there, we are given quite a lot of information in this problem. First of all, let's make an equation.


y = x - 22

where y = student's age

where x = instructor's age

this equation is correct because x(instructor) - 22 will yield the student's age (y).


If the instructor were 44 years old, the student would be 22 years old.

y = 44 - 22

y = 22


If the instructor were 66 years old, the student would be 44 years old.

y = 66 - 22

y = 44

3 0
3 years ago
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