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
Anettt [7]
3 years ago
12

Solve the equation below, and check the solution. 0.3x = 9 The solution set is { }

Mathematics
1 answer:
exis [7]3 years ago
7 0

Answer:

  {30}

Step-by-step explanation:

The solution set can be written a couple of ways:

<u>Roster</u>: lists the elements of the set:

  x = {30}

<u>Set builder notation</u>: defines the elements of the set according to some rule or rules

  {x : x = 30}

The latter form can have variations that define the domain of x on the left, such as

  \{x\in\mathbb{Z}:x=30\}

This is pronounced, "x is an element of the set of integers such that x is equal to 30." This sort of notation is more commonly used when the set is specified by an inequality or a functional relationship. You may see the colon (:) replaced by a vertical bar (|).

_____

<em>Comment on the above notations</em>

I don't like the notation x = {30} because the solution to the equation is a value, not a set of values. I prefer to write it as x ∈ {30}. "x is an element of the set containing 30." The "is an element of" symbol (∈) is not always available, so the equal sign is often used instead.

You might be interested in
In what base is the sum of 8 and 5 equal to 14?
LuckyWell [14K]
Nothing. It would have to be 5 and 8 to be 13... Not 14 and it would be math. :)
4 0
3 years ago
FREE BRAINLY!!! PLEASE HELP
balandron [24]
Answer:

x-intercept = (8,0)

y-intercept = (0,20)
5 0
2 years ago
Read 2 more answers
Write a linear function f with the values f (-1)=-8 and f (0)=-3​
chubhunter [2.5K]

Answer:

f(x)=5x-3

Hope this helps ;)

8 0
3 years ago
Gina is hiking from the top of the mountain in 24 minutes she walks down
liberstina [14]

nooooooooooooooooooooooooo

6 0
3 years ago
Jessica made 124 cookies. She put the cookies into three boxes, A, B and C.
Oxana [17]

There are 78 cookies in box C, 26 cookies in box B and 10 cookies in box A.

let the number of cookies in first box be represented mathematically as   B-16

the number of cookies in second box be represented as B

the number of cookies in third box be represented as 3B

Since there are 124 cookies we can make an equation  such that it becomes

B-16 +B +3B =124

Solving for B, we have

5B -16 =124

5B =124 +16

5B =130

B=130/5

B=26

Therefore Box A contains B-16 =26-16 =10 cookies

Box C contains 3B =3 X 26=78 cookies

See similar question here: brainly.com/question/23505776

7 0
2 years ago
Other questions:
  • ZA and ZB are complementary angles. If mZA = (7x + 23)° and
    13·1 answer
  • How many feet are in 144 inches?<br> Please show work!!!!!
    6·1 answer
  • 3(5z-7)-2(9z-11)=4(8z-13)-17 solve the equation <br>​
    8·1 answer
  • The average cost of an item is defined as the total cost to produce divided by the number produced. A shoe company that pays $24
    7·1 answer
  • Devin ran 6 over 10 miles on Thursday.He ran 1.5 miles on Saturday. How many total miles didi he run
    6·1 answer
  • The monthly cost of driving a car depends on the number of miles driven. Lynn found that in May her driving cost was $380 for 48
    13·1 answer
  • Jayvon drives his boat at a constant speed, described by the question d=25t, where d represents the distance, in miles, that the
    10·1 answer
  • 6(5x - 3) + 2 = 14 what's the answer?
    10·1 answer
  • I need to know how to describe the parts of the expression (3x-2)
    9·2 answers
  • Match the vocabulary to the proper definition.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!