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
Alborosie
3 years ago
14

If 1/x + 1/3x equals 4 then what is x

Mathematics
1 answer:
Vikki [24]3 years ago
3 0

Answer:

\huge\boxed{x=\dfrac{1}{3}}

Step-by-step explanation:

\dfrac{1}{x}+\dfrac{1}{3x}=4\\\\\text{Domain:}\ x\neq0\\\\\text{find LCD}=3x\\\\\dfrac{1\cdot3}{x\cdot3}+\dfrac{1}{3x}=4\\\\\dfrac{3}{3x}+\dfrac{1}{3x}=4\\\\\dfrac{3+1}{3x}=4\\\\\dfrac{4}{3x}=\dfrac{4}{1}\qquad\text{cross multiply}\\\\(3x)(4)=(4)(1)\\\\12x=4\qquad\text{divide both sides by 12}\\\\\dfrac{12x}{12}=\dfrac{4}{12}\\\\x=\dfrac{4:4}{12:4}\\\\x=\dfrac{1}{3}\in D

You might be interested in
What is 12% of (3/4) of 1.8? Express as a decimal.
Crank

PLease note that in mathematics, "of" means multiplication. Thus, 12% of (3/4) of 1.8 can be rewritten as (\frac{12}{100}) \times \frac{3}{4}\times  1.8

Thus we have: 0.12 \times 0.75 \times  1.8

Now, 0.12 \times 0.75 \times  1.8=0.162

Therefore, 12% of (3/4) of 1.8 expressed as a decimal is 0.162.

Therefore, 0.162 is the correct answer.

5 0
4 years ago
Read 2 more answers
A pitcher contains 4.32 pints of lemon syrup. 12.6 pints of water are added to the syrup to make lemonade. How much lemonade is
cricket20 [7]
A pitcher contains 4.32 pints of lemon syrup. 12.6 pints of water are added to the syrup to make lemonade. How much lemonade is made ?

Answer:
19.92 pints of lemonade are made.
Hope I helped!
3 0
3 years ago
Read 2 more answers
State whether the quantity described is a parameter or a statistic and give the correct notation. Average household income for a
kogti [31]

Answer:

b) statistic.

Step-by-step explanation:

In applied statistical work we rarely have the opportunity to measure entire populations, instead we make inferences about the populations from samples drawn, ideally randomly from the population. We usually want to know averages from whole populations, but use the average from a sample as our best guess at the population average. The unknown population average is called a parameter. The known sample average is called a statistic.

As a matter of convention, most statistical texts use greek symbols for population parameters and the English or Arabic letters for sample statistics. For example, a sample mean is often denoted as x-bar . Population means are denoted with the lower-case greek letter mu μ .

4 0
4 years ago
Round 7,883 to nearest thousand
Stels [109]

Answer:

8,000

Step-by-step explanation:

the nearest thousand is 8,000 as it is past 7,500.

6 0
3 years ago
Read 2 more answers
A quiz has 5 questions with answers that are either true or false. How many different combinations of answers are
ArbitrLikvidat [17]
There would be 32 possible combinations.
4 0
3 years ago
Other questions:
  • PLEASE HELP I REALLY NEED THIS
    13·1 answer
  • What is 7/4 as a mixed number?
    10·2 answers
  • 1/3x^2-5=7 what is x
    10·1 answer
  • Find the nth term of the quadratic sequence
    10·2 answers
  • Greta is taking a road trip from Cincinnati to San Francisco. On the first day, she drove 650 miles in 10 hours. On the second d
    10·1 answer
  • Alicia says that 6 ÷ 2 + 5 is the same as 5 + 6 ÷ 2. Is Alicia correct or incorrect? Explain.
    9·2 answers
  • - Karen went to a big sale to shop for clothes for school. She bought a shirt for $15.25,
    11·1 answer
  • Plz help will mark brainliest plz!!
    13·1 answer
  • ADE and ABC are similar which best explains why the slope of the line between points a and D is the same as the slope between po
    13·1 answer
  • 7 8/6 = 9.3?<br><br><br><br> Please explain your answer
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!