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
sammy [17]
3 years ago
10

Mr. Pham wrote the equation below on the board. 18 - 7x = -20.5 What is the value of x?

Mathematics
2 answers:
slavikrds [6]3 years ago
7 0
Use the arithmetic operations to get the variable x on one side of the equation and everything else on the opposite side.

If something is being is being done to a variable, we undo that operation by using the inverse of that operation.

For example, if 10 is being added to x, we use the inverse of addition or subtraction.

18 - 7x = -20.5

We variable x is being multiplied by 7 and is subtracting 18. We need to undo all those operations.

18 - 7x = -20.5
-7x = -38.5

Now the variable is only being multiplied by -7. Reverse the operation.

-7x = -38.5
x = 5.5

So, x is equal to 5.5.
aivan3 [116]3 years ago
5 0

Answer: The answer should be D(x=5 1/2)

Step-by-step explanation:

Trust me I did the equation and work.

You might be interested in
Helppp meeeee with question 1 or can the all pleaseeee !!!
Liula [17]

Answer:

1. 2c+9=m

Step-by-step explanation:

6 0
3 years ago
Please anyone made my friend please and talk with me​
nadezda [96]

Answer:

ok I will talk with you

how are you

7 0
2 years ago
Read 2 more answers
How would I solve this equation for mass (m)?
zaharov [31]
Simple...

you have: F= \frac{G m^{2} }{ d^{2} }

You want to find m-->>>

1.)Isolate m

d^{2} *F= \frac{G m^{2} }{ d^{2} } * d^{2}

Leaving you with...

F*d^{2}=G m^{2}

Keep isolating m-->>>

F* d^{2} =G m^{2}

\frac{F* d^{2} }{G} = \frac{G m^{2} }{G}

Square root to solve what just m is-->>>

\sqrt{ \frac{F* d^{2} }{G} } = \sqrt{ m^{2} }

=\sqrt{ \frac{F* d^{2} }{G}  } =m

That is how you solve for m...

Thus, your answer.
7 0
3 years ago
answer you were looking for? Tap for more options... − ( − 6 ) ± √ − 6 2 − 4 ( − 2 ) ( 1 ) 2 ( − 2 ) - ( - 6 ) ± - 6 2 - 4 ( - 2
PSYCHO15rus [73]

Answer:

cos

( 390 ) − 4 cot ( − 45 ) sin ( 330 )

Step-by-step explanation:

7 0
2 years ago
How much greater is 684 grams to 29,510 centigrams
yulyashka [42]
29.510 centigrams are 0.29510 grams
--> 684-0.29510=683.7049grams
5 0
3 years ago
Read 2 more answers
Other questions:
  • Which describes the intersection of planes A and B?<br> line CD<br> line ED<br> point C<br> point D
    14·2 answers
  • Find the probability is selecting a day that start with the letter s
    9·2 answers
  • What is the expansion of the following fraction?
    15·2 answers
  • Evaluate tan45/sin30 . In your final answer, include all calculations.
    14·1 answer
  • Exercise 2.1.47 Prove that ifA^-1 exists and AX=0 then X =0.
    6·1 answer
  • Part A: The area of a square is (9x2 − 12x + 4) square units. Determine the length of each side of the square by factoring the a
    14·1 answer
  • Match the two numbers with their least common multiple (LCM). (6 points)
    10·1 answer
  • Sara needs 1/3 of a yard of ribbon to make a bow. She has 10 yards of ribbon. How many bows can she make?
    7·1 answer
  • Divide $2604 into a ratio of 2:1.
    5·1 answer
  • Please help me worth 30 points!!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!