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
Lilit [14]
3 years ago
7

3 (2x-4)=2 (x+4) solve the following problem

Mathematics
2 answers:
ratelena [41]3 years ago
7 0
3(2x-4)=2(x+4)
6x-12=2x+8
6x-2x=8+12
4x=20
x=20/4
x=5
xxTIMURxx [149]3 years ago
5 0
Simplify the equation to
6x-12=2x+8
Subtract 2x from both sides
4x-12=8
Add 12 to both sides
4x=20
Divide both sides by 4
x=5
You might be interested in
I need help asap :):)):):
Ksju [112]

Answer:

$43.20

Step-by-step explanation:

Subtract the tax to find the actual sale price then multiply by 4. 12-1.20=10.80.... 10.80*4=43.30

7 0
3 years ago
Read 2 more answers
WILL GIVE BRAINLIST IF ANSWER IS CORRECT!
ella [17]

Answer: its is square pyramid or D

Step-by-step explanation:

5 0
3 years ago
Jared can ran 4 miles in 1/2 hour. What is his average speed in miles per hour? (how many miles can he run in 1 hour)
evablogger [386]

Answer: His average speed is 8 miles an hour

Step-by-step explanation: First, two halves make a whole, so we simply multiply how many miles he ran in half an hour by 2!

4 x 2 = 8

Hope this helps :)

4 0
3 years ago
Random sample size of 81 are taken from an infinite population whose mean and standard deviation are 200 and 18, respectively. T
Ugo [173]

Answer:

the  mean and standard error of the mean are 200 and 2 respectively.

Step-by-step explanation:

Given that ;

the sample size n = 81

population mean μ = 200

standard deviation of the infinite population σ = 18

A population  is the whole set of values, or individuals you are interested in, from an experimental study.

The value of population characteristics such as the  Population mean (μ), standard deviation (σ) are said to be known as the population distribution.

From the given information above;

The sample size is large and hence based on the central limit theorem the mean of all the means is same as the population mean 200.

i.e

\mu = \bar \mu_x = 200

∴ The mean = 200

and the standard error of the mean can be determined via the relation:

\mathbf{standard \ error \ of \ mean = \dfrac{\sigma}{\sqrt {n}}}

\mathbf{standard \ error \ of \ mean = \dfrac{18}{\sqrt {81}}}

\mathbf{standard \ error \ of \ mean = \dfrac{18}{9}}

\mathbf{standard \ error \ of \ mean =2}

Therefore ; the  mean and standard error of the mean are 200 and 2 respectively.

6 0
3 years ago
What is the solution to the following system 4x+3y-z=-6
Aliun [14]

Solve equation [2] for the variable  y  
 

<span> [2] y = 6x + 3z - 12 </span>

// Plug this in for variable  y  in equation [1]

<span><span>  [1] 4x + 3•(6x+3z-12) - z = -6 </span><span>  [1] 22x + 8z = 30 </span></span>

// Plug this in for variable  y  in equation [3]

<span><span>  [3] 8x + 2•(6x+3z-12) + 4z = 6 </span><span>  [3] 20x + 10z = 30 </span></span>

// Solve equation [3] for the variable  z  
 

<span> [3] 10z = -20x + 30 [3] z = -2x + 3</span>

// Plug this in for variable  z  in equation [1]

<span><span>  [1] 22x + 8•(-2x+3) = 30 </span><span>  [1] 6x = 6 </span></span>

// Solve equation [1] for the variable  x  

<span><span>  [1] 6x = 6</span>  <span>  [1] x = 1</span> </span>

// By now we know this much :

<span><span>  x = 1</span> <span>  y = 6x+3z-12</span> <span>  z = -2x+3</span></span>

<span>// Use the  x  value to solve for  z  
</span>

<span>   z = -2(1)+3 = 1 </span>

<span>// Use the  x  and  z  values to solve for  y  
</span><span><span>  y = </span>6(1)+3(1)-12 = -3 </span>

Solution :<span><span> {x,y,z} = {1,-3,1}</span> </span>
3 0
3 years ago
Other questions:
  • A circular plate has circumference of 37.7cm . Calculate the diameter of the plate
    13·2 answers
  • The interior angle of a triangle measues 75, (5w+25), And (2w+10)
    11·2 answers
  • If 9 - 6x = 45 find the value of x - 4
    14·2 answers
  • Give the simple formula for the nth term of the following arithmetic sequence. Your answer will be of the form an + b.
    10·1 answer
  • 200/40+15 = ??<br><br><br>helpp mee ^^ ​
    12·2 answers
  • Help me i don’t remember how to do this
    6·1 answer
  • Determine the slope of the line that passes through the given points. Complete your work in the space provided.
    6·1 answer
  • 4. Find the exact volume of the cylinder. Use alt+227 or pi for pi as needed. . 1<br> 16<br> 21
    8·1 answer
  • Find the area. Use 3.14 for the value of pi . Round your answer to the nearest tenth.
    6·2 answers
  • How many rational numbers lie between any two fractions?<br>​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!