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faust18 [17]
3 years ago
10

Four minus 2X equals 16

Mathematics
2 answers:
olchik [2.2K]3 years ago
6 0

Answer:

-6

Step-by-step explanation:

4-2x=16

-4       -4

--------------

 -2x=12

/////////////

-2      -2

-----------

x=-6

marta [7]3 years ago
4 0
X=-6
4-2x=16
-4. -4
-2x=16
—— —-
-2. -2
x=-6
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matrenka [14]
The commission is 5% on everything she sells
If she sold $1650.00
First you have to find her commission
100%=1650
5%=x
100•x=1650•5
100•x=8250
—— ———
100 100
x=82.5(this is her commission)
Now you have to add $82.5 to total she earns in the week.
$400.00+ $82.5 = $482.5
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3 years ago
A movie theater charges $10 for adults and $6 for seniors. On a particular day when 357 people paid in admission, the total rece
olganol [36]

Answer:

Step-by-step explanation:

Determine the types of tickets involved.

There are student tickets and adult tickets.

Create a table to organize the information.

Type  

Number

   

Value ($)

   

Total Value ($)

 

Student    

6

 

Adult    

9

 

1

,

506

 

Step 2. Identify what you are looking for.

We are looking for the number of student and adult tickets.

Step 3. Name. Represent the number of each type of ticket using variables.

We know the number of adult tickets sold was  

5

 less than three times the number of student tickets sold.

Let  

s

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Then  

3

s

−

5

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Multiply the number times the value to get the total value of each type of ticket.

Type  

Number

   

Value ($)

   

Total Value ($)

 

Student  

s

   

6

   

6

s

 

Adult  

3

s

−

5

   

9

   

9

(

3

s

−

5

)

 

1

,

506

 

Step 4. Translate: Write the equation by adding the total values of each type of ticket.

6

s

+

9

(

3

s

−

5

)

=

1506

 

Step 5. Solve the equation.

6

s

+

27

s

−

45

=

1506

33

s

−

45

=

1506

33

s

=

1551

s

=

47

students

 

Substitute to find the number of adults.

3

s

−

5

=

 number of adults

3

(

47

)

−

5

=

136

 adults

Step 6. Check. There were  

47

 student tickets at  

$6

 each and  

136

 adult tickets at  

$9

 each. Is the total value  

$1506

?

 We find the total value of each type of ticket by multiplying the number of tickets times its value; we then add to get the total value of all the tickets sold.

47

⋅

6

=

282

136

⋅

9

=

1224

_____

 

1506

✓

 

Step 7. Answer the question. They sold  

47

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136

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5 0
3 years ago
Mhanifa please help! This is already late and I need it done ASAP!
Debora [2.8K]

Answer:

Given all right triangles

<u>Use Pythagorean to find the missing side:</u>

  • a² + b² = c², where c- hypotenuse

=1=

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  • x = √45
  • x = 6.7

=2=

  • x² = 12² + 5² = 169
  • x = √169
  • x = 13

=3=

  • x² = 2² + 5² = 29
  • x = √29
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3 years ago
How much water should be added to 3 gallons of pure alchohol in order to obtain a solution that is 15% alchohol?
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say we're going to add "x" gallons of water, now how many gallons of alcohol is in pure water? well 0%, and 0% of "x" is (0/100) * x = 0.

the 3 gallons we know are 100% alcohol, how many gallons of alcohol is in it?  well (100/100) * 3 = 3.

the resulting mix will have x + 3 gallons total and it's going to be 15% alcohol, how many gallons of alcohol is that? (15/100) * (x+3).

now, the amount of alcohol never increased, so the original 3 gallons of only alcohol will remain even after the water has been added, so.

\begin{array}{lcccl} &\stackrel{solution}{quantity}&\stackrel{\textit{\% of }}{amount}&\stackrel{\textit{gallons of }}{amount}\\ \cline{2-4}&\\ \textit{pure water}&x&0.00&0\\ \textit{pure alcohol}&3&1.00&3\\ \cline{2-4}&\\ mixture&x+3&0.15&0.15(x+3) \end{array} \begin{array}{llll} \\[3em] \leftarrow \textit{this amount}\\\\ \leftarrow \textit{must be equal to this one} \end{array} \\\\\\ 3 = 0.15(x+3)\implies 3=0.15x+0.45\implies 2.55=0.15x \\\\\\ \cfrac{2.55}{0.15}=x\implies 17=x

5 0
2 years ago
The managers at an electronics store want to sell all 1,536 computers in the store’s warehouse in 48 days. How many computers do
elena-14-01-66 [18.8K]
1,536 divided by 48 = 32.....Please mark the brainliest...
5 0
3 years ago
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