1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kipish [7]
3 years ago
15

What is the answer to the equation 5+2(x-1)=12

Mathematics
2 answers:
I am Lyosha [343]3 years ago
4 0
5+2(x-1)= 12
So you need to get rid of parentheses, which is that you have to distribute.
5+2x-2= 12
-5             -5    (Inverse)
2x-2= 7
    +2  +2         (Another inverse)
<u>2x</u>= <u>9
</u>2      2       (Divide)

x= 4.5
----------------------
Check
5+2(4.5-1)=12
5+2(3.5)=12
5+7=12
12=12
S_A_V [24]3 years ago
3 0
5+2(x-1)=12 \\ \\ 2 ( x - 1) = 12 - 5 \ / \ subtract \ 5 \ from \ each \ side \\ \\ 2(x - 1) = 7 \ / \ simplify \\ \\ x - 1 =  \frac{7}{2} \ / \ divide \ each \ side \ by \ 2 \\ \\ x =  \frac{7}{2}  + 1 \ / \ add \ 1 \ to \ each \ side \\ \\ x =  \frac{9}{2} \ / \ simplify \\ \\

So, the answer to this problem is x = 9/2 or x = 4.5.
You might be interested in
draw and mark a figure in which M is the midpoint of ST, SP=PT, and T is the midpoint of PQ. i don’t know how to do it!
Virty [35]
See attachment

the midpoint is the point that is in the middle of the segment

6 0
3 years ago
Read 2 more answers
Cos5xcosx-sin5xsinx=??????????????????
SVEN [57.7K]

Answer:

cos6x.

Step-by-step explanation:

We use the identity

cosAcosB - sinAsinB = cos(A+B)

so cos5xcosx - sin5xsinx = cos(5x + x)

= cos6x.

7 0
3 years ago
I need help answering this!!! I just need help on how to do it or fragments of an answer. If you give me the straight-up answer
Marizza181 [45]
First part 3x+(-5)=19 you need to remove parenthesis move the constant -5 to the right to have 3x=19+5 then add those to get 3x=24 then divide to get x=8
8 0
3 years ago
Help me solve this thing por favor i only came for the answers
NeTakaya
Druvjobftjcgtytdsrygg
6 0
3 years ago
Which expression represents rational numbers? Select all that apply
Vladimir79 [104]

Answer:

1. \sqrt{100} \sqrt{100}

2. 13.5 + \sqrt{81}

3. \sqrt{9} + \sqrt{729}

6. \frac{3}{5} + 2.5\\\frac{3+12.5}{5}\\\frac{15.5}{5}\\= 3.1

These four options are rational;


Step-by-step explanation:

1. \sqrt{100} \sqrt{100} equals to 10 * 10 = 100 which is rational

2. 13.5 + \sqrt{81} equals 13.5 + 9 = 22.5

3. \sqrt{9} + \sqrt{729} -- 3+27 = 30

6. \frac{3}{5} + 2.5\\\frac{3+12.5}{5}\\\frac{15.5}{5}\\= 3.1

Option 4 and 5 are irrational because they include  \sqrt{353}  and \sqrt{216} which are not a perfect square and their answers will be non recurring and non terminating decimal fraction.

5 0
3 years ago
Other questions:
  • 1) A population of genetically modified
    7·1 answer
  • Anyone knows the answer?
    12·2 answers
  • PLEASE HELP!! A.S.A.P!!
    11·1 answer
  • Finding an Indefinite Integral dx/x(lnx^2)^3
    15·1 answer
  • How to divide 219 by 3?
    9·1 answer
  • PLEASE HELP!!! TIMED QUESTION!!! NOT A TEST NOR QUIZ!!!!
    15·1 answer
  • 1. Last Wednesday, students could choose ham or turkey sandwiches for
    13·2 answers
  • Find the minimum value of<br> C = 6x + 7y
    9·1 answer
  • Is this true or no plz help
    6·1 answer
  • in a biology course, students spend 250 minutes in a lab and lecture each week. the lab time is 20 minutes shorter than the lect
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!