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
Vika [28.1K]
3 years ago
11

Describe and correct the error a student made when solving the equation 7=-4(x+7)-3+2x. What is the correct solution?

Mathematics
1 answer:
olga55 [171]3 years ago
5 0

Answer:

7=-4(x+7)-3+2x

BODMAS

7=-4x-28-3+2x

7=-2x-31

7+31=-2x

x=38/2

x= -19

You might be interested in
How many vertices does a sphere have?
Vinvika [58]
Hello, a sphere has zero vertices.
5 0
3 years ago
What is the mean for 87,93,86,90,84
lys-0071 [83]
Mean, or average, is solved by adding all the numbers and dividing by the number of numbers. The answer is 88. 
4 0
3 years ago
Read 2 more answers
Suppose that there are two types of tickets to a show: advance and same-day. Advance tickets cost $30 and same-day tickets cost
Tju [1.3M]

The advance tickets were 35 in number and the same day ticket will be 30 in number.

<h3>What will be the number of tickets?</h3>

To find out the number of the tickets sold we will give some notations so the notations are as follows:-

A= Cost of advance tickets=$30

S= cost of same-day ticket-=15

N_A= Number of the advance tickets

N_S=Number of same-day tickets.

The equations made by the given data will be:-

30N_A+15N_S=1500\\\\\\N_A+N_S=65

By solving the above equations:-

N_S=30\ \ \ \ \  \ N_A=35

Hence the advance tickets were 35 in number and the same day ticket will be 30 in number.

To know more about linear equations follow

brainly.com/question/14323743

#SPJ1

7 0
2 years ago
What is 20% of 180<br>please i realy need to answer this​
blagie [28]

Answer:

36

20 percent * 180 =

(20:100)* 180 =

(20* 180):100 =

3600:100 = 36

Now we have: 20 percent of 180 = 36

Question: What is 20 percent of 180?

Percentage solution with steps:

Step 1: Our output value is 180.

Step 2: We represent the unknown value with $x$.

Step 3: From step 1 above,$180=100\%$.

Step 4: Similarly, $x=20\%$.

Step 5: This results in a pair of simple equations:

$180=100\%(1)$.

$x=20\%(2)$.

Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both

equations have the same unit (%); we have

$\frac{180}{x}=\frac{100\%}{20\%}$

Step 7: Again, the reciprocal of both sides gives

Step-by-step explanation:

Hope it is helpful.....

3 0
3 years ago
If there are 7 bolts in a widget and 6 widgets in an appliance, how many bolts are in 20 appliances?
sweet [91]
A single appliance has 6 widgets, and a widget has 7 bolts. Therefore, you need to multiply 6 by 7 to find the number of bolts in a single appliance.

6 x 7 = 42

Now that you know the number of bolts in an appliance, you can find the number of bolts in 20 appliances by multiplying 42 by 20.

42 x 20 = 840

Hence, there are 840 bolts in 20 appliances.

5 0
3 years ago
Other questions:
  • What would be the total cost of Annabel renting the surfboard for 6 hours
    15·2 answers
  • 2. Peter, Jeff, and John, each perform subtraction incorrectly as follows:
    13·1 answer
  • And the options are:
    12·2 answers
  • Rewrite the rational exponent as a radical
    5·1 answer
  • Please help me with this math question
    7·1 answer
  • Karina needs a total of $45 to buy her mother a birthday present. She has saved 20% of the amount so far. How much has she saved
    10·1 answer
  • 2x° 4xº<br><br><br> Find the value of x.​
    9·1 answer
  • Find the value of X and prove the following​
    13·2 answers
  • Urgent!!!! please help just dont know if it is the use of words or what
    8·1 answer
  • 2x - 12 = 2(x-10)-87
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!