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
spin [16.1K]
3 years ago
14

Which of the two is correct? Explain why, including pointing out any mistakes that were made.

Mathematics
1 answer:
Norma-Jean [14]3 years ago
4 0
The correct way to solve this equation would be:
7=5+3(x-4)
Distribute the Brackets.
3*x=3x
3*4=12
7=5+3x-12
Add like terms.
7=-7+3x
Add 7 to both sides.
(7)+7=(-7+3x)+7
14=3x
Divide both sides by 3.
(14)/3=(3x)/3
4.6667 or 14/3 =x

Both answers are incorrect.
Some the significant mistakes:
-Didn't follow BEDMAS
-How did 7=8(x-4) turn into 78=x-4?

Hope this helps.
-Benjamin
You might be interested in
Solve for X<br> (5x-2)^2=17<br> please help me everyone.
beks73 [17]

Answer:

\frac{2}{5}±\frac{\sqrt{17}}{5}

Step-by-step explanation:

(5x-2)^2=17 \\ 5x-2=±\sqrt{17} \\ 5x = 2 ± \sqrt{17}   \\ x=\frac{2}{5}± \frac{\sqrt{17}}{5}

Don't mind the ±

5 0
3 years ago
Select Independent or Not independent for each situation. Not independent Independent a. A jar contains fifteen coins. Two coins
satela [25.4K]

Answer:

The correct answers are a. Independent; b. Independent; c. Independent;  e.  Not Independent

Step-by-step explanation:

a. A jar contains fifteen coins which. Two coins are picked randomly without replacement. Thus the second pick is not dependent on the first pick as the coins in the all same and thus the experiment is independent.

b. A number cube is rolled twice. Outcome of the first roll is independent of the outcome in the second and thus the experiment is independent.

c. A box contains number cards labeled from 1 to 10 where 2 cards are chosen randomly with replacement. Hence first draw does not effect the sample making the experiment independent.

e. There are 3 green balls and 7 red balls in a bag with 2 balls are chosen randomly without replacement. Thus one pick depends on what is drawn in the previous pick thus making it a dependent or not independent event.

4 0
3 years ago
Sarah has 2,500 pictures saved to her camera roll. She wants to free up some space on her phone. She will delete a total of 50 p
weeeeeb [17]

Answer:

x = number of days

y = number of remaining photos saved to her camera roll.

Step-by-step explanation:

Hi, to answer this question we have to write an equation:

The number of pictures saved in the camera roll (2,500) minus the amount of photos that she deletes per day (50) multiplied by the number of days (x) must be equal to the number of photos remaining.

y =2,500- 50x

The variables are x and y.

Where x is the number of days and y is the number of remaining photos.

Feel free to ask for more if needed or if you did not understand something  

5 0
3 years ago
one elvis stamp and one liberty stamp cost a total of .63. a sheet of 40 elvis stamps and 20 liberty stamps cost a total of 18.4
gregori [183]
Elvis stamps: 0.29
Liberty stamps: 0.34
6 0
3 years ago
What is an appropriate data display for the distribution of teachers by age?
sertanlavr [38]
Not really sure what exactly you are asking, but maybe a bar graph?
4 0
3 years ago
Other questions:
  • Which function has a vertex at the origin?
    10·1 answer
  • In Ben's apartment complex, residents are fined $10 per day each day the rent is late. Last month, Ben wrote the apartment compl
    14·2 answers
  • How many times greater is 1 gallon than one quart
    8·1 answer
  • One number is seven more than a second number. Twice the first is 2 less than 3 times the second. Find the numbers.
    10·1 answer
  • Is it possible to repeat an experiment, with the same number of trials in each, and get a different experimental probability for
    14·2 answers
  • The cost of a laptop computer in 2007 was $1,250. In 2009, the price
    10·1 answer
  • Factor completely 5x^2 + 20x
    7·2 answers
  • √ 25 –2√3 + √27 +2√ 9 Express in simplified radical
    13·1 answer
  • 2. The fifth term and eighth terms of a Gp are 80 and 640 respectively find
    8·1 answer
  • PLS HELP MEEE !!!!!
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!