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
Oksi-84 [34.3K]
3 years ago
11

The work of a student trying to solve the equation 4(2x − 1) = 11 + 3x + 5 is shown below: Step 1: 4(2x − 1) = 11 + 3x + 5 Step

2: 8x − 4 = 16 + 3x Step 3: 8x + 3x = 16 − 4 Step 4: 11x = 24 Step 5: x = 2.18 In which step did the student first make an error and what is the correct step?
Mathematics
2 answers:
pantera1 [17]3 years ago
6 0
The answer is Step 3: 8x − 3x = 16 + 4, because you have to subtract 3x not add.
<span />
neonofarm [45]3 years ago
3 0
In step three the prblem was incorrect. this is because you have to add four from both sides leading to 8x=20+3x then you have to subtract 3x which is 5x=20. divinding both sides by 5 is:

X=4 
You might be interested in
Eight expressions are given below. Determine whether each expression is equivalent to 5^10 or not equivalent to 5^10.
KengaRu [80]

Answer:

See Explanation

Step-by-step explanation:

The question is incomplete, as the 8 expressions are not given.

The general explanation is as follows

As complex as an expression may seem, you have to simplify each expression until it cannot be further simplified.

Then you categorize each result, depending on if it equals 5^{10} or not

Take for instance:

5^5 * 5^5

Using law of indices:

5^5 * 5^5 = 5^{5+5

5^5 * 5^5 = 5^{10 ---- equivalent

\frac{5^5 + 5^5}{2 * 5^{-5}}

Factorize the numerator

\frac{5^5 + 5^5}{2 * 5^{-5}} = \frac{5^5(1  + 1)}{2 * 5^{-5}}

\frac{5^5 + 5^5}{2 * 5^{-5}} = \frac{5^5 * 2}{2 * 5^{-5}}

Cancel out 2

\frac{5^5 + 5^5}{2 * 5^{-5}} = \frac{5^5}{5^{-5}}

Apply law of indices

\frac{5^5 + 5^5}{2 * 5^{-5}} = 5^{5--5}

\frac{5^5 + 5^5}{2 * 5^{-5}} = 5^{5+5}

\frac{5^5 + 5^5}{2 * 5^{-5}} = 5^{10 ---equivalent

125 * 78125

Express as exponent

125 * 78125  = 5^3 * 5^7

Apply law of indices

125 * 78125  = 5^{3+7

125 * 78125  = 5^{10 ---- equivalent

5^3 + 5^7

Solve exponents

5^3 + 5^7 = 125 + 78125

5^3 + 5^7 = 78250 ---- not equivalent

4 0
3 years ago
Solve the system using multiplication for the linear combination method.
kipiarov [429]
6x-3y=3
-2x+6y=14.
First step is multiply the top equation by 2, so you have
12x-6y=6
-2x+6y=14
-6y and +6y cancel each other out, so if you simplify, you have
10x=20, which is then solved by dividing each side by 10, and getting x=2.

Now plug x=2 into one of the equations (I chose the first)
6(2)-3y=3
12-3y=3
-3y=-9, divide each side by -3 and get y=3.
so your point is (2,3)
7 0
3 years ago
Can some one help meeee
Strike441 [17]

Answer:

With what? there is nothing here

Step-by-step explanation:

6 0
3 years ago
HELPPPPPPPP PLEASSEEE
Nata [24]
Starting with the parent function f(x) = √x, Marilyn replaces x with x + k, where k is positive, to form a new function, g(x). The result will be that her graph will translate horizontally k units to the left.
5 0
3 years ago
a sports tournament has 8 teams. each team has n players. using n, write an expression for the total numbers of players in the t
erastova [34]

Answer:

8n.

Step-by-step explanation:

You would be multiplying the amount of teams by the number of members to find the total members, hence 8 times n.

5 0
3 years ago
Other questions:
  • 60 POINTS PLZ ANSWER FAST!!!!!!!!!!!!!!!!!!!!!!!!!!
    12·2 answers
  • The general term of an arithmetic sequence is tn = 32 + 3n, where n ∈N and n ≥ 1. The sequence is
    5·1 answer
  • John had a total of $150. He purchased a DVD box set which costs $50 as well as a
    10·1 answer
  • Select the correct answer.
    11·1 answer
  • Match the image with its name. If points are shown, be sure to identify the image with the points.
    5·1 answer
  • What is the value of -12 ? –13 –12 12 13
    13·1 answer
  • The sweatshirt you purchased was on sale for $29.25, having been marked 35% off. What was the original price?
    13·2 answers
  • On your bike, you can travel 6 miles per hour. Which variable is independent?
    12·2 answers
  • 5. What is the range? Explain. (1 point)
    13·1 answer
  • |−9| − |−5| i hate next gen but help pls
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!