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kipiarov [429]
3 years ago
6

Elena and Lin are trying to solve 12x+3=72x+5. Describe the change they each make to each side of the equation.

Mathematics
1 answer:
algol133 years ago
5 0

Answer:

No Solution

Step-by-step explanation:

12x + 3 = 72x + 5

subtract 12x from both sides

end up with

3 = 72x - 12x + 5

subtract 12x to 72x

3 = 60x + 5

-5 from both sides

-8 = 60x

since x is a bigger number the answer would be NO SOLUTION

12x + 3 = 72x + 5

I do not understand lins logic

x + 6 = 7x + 10

subtract 6 from both sides

x = 7x + 4

move 7x to the other side

7x = 4

divide 7

x = 0.5

Also wrong because I get how lin got that answer

My way

12x + 3 = 72x + 5

-12 x from both sides

3 = 60x + 5

+5 to other side

8 = 60x

if the x was on the other side it would make sense

but it is not so the Answer is NO SOLUTION

Hope this Helped :)

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No one is answering i posted this question 2 times, this is my 3rd time please answer.
Dahasolnce [82]

Answer:

13

Step-by-step explanation:

First, fill in 3 boxes of the table using the given information (blue numbers on the attached table)

"Of the 32 students that have a cell phone, 19 students do not have a tablet."

The top row of the table is students who have a cell phone.  Therefore, place 19 in the box in this row that is in the "no tablet" column.

"Of the 70 students that have a tablet, 57 students do not have a cell phone."

The first column of the table is students who have a tablet.  Therefore, place 57 in the box in the 2nd row of this column.

"11 students do not have a cell phone or a tablet."

Find the "no cell phone" row and the "no tablet" column and place 11 in the box that coincides.

We can calculate the blank totals using addition (shown by green numbers on the attached table)

  • Total students with no cell phone = 57 + 11 = 68
  • Total students with no tablet = 19 + 11 = 30

To calculate the number of students who have a cell phone AND a tablet:

⇒ Total students with a cell phone <em>minus</em> students with a cell phone but no tablet

⇒ 32 - 19 = 13

4 0
2 years ago
Will mark brainliest! Answer quickly please.
inn [45]
1400kg.
Force=ma
2100N= m*1.5
2100/1.5= 1400kg.
Please mark me brainliest :)
3 0
2 years ago
A black mamba snake can travel 28 ft./s how far can a black mamba travel In 60 seconds
zlopas [31]

1680 ft./60s

28 ft in a second, so multiply 28 by 60 and you get 1680.

8 0
3 years ago
Read 2 more answers
Question 1 of 10<br> Which describes the graph of y= -(x - 3)² + 2?
vfiekz [6]

which means the graph is on quadrate 2 or 3.

Straight  Line :

A straight line is an infinite-length line that does not have any curves on it. A straight line can be formed between two points also but both ends extend to infinity. A straight line is a figure formed when two points A (x1, y1) and B (x2, y2) are connected with the shortest distance between them, and the line ends are extended to infinity.

In the image shown below, a straight line between two points A and B is shown. A straight line AB is represented by: Vector AB

The lines are drawn in a slanting position or form some angle other than 0o, 90o, 180o, 270o, 360o with horizontal or vertical lines are called oblique or slanting lines.

y=  -(x - 3)² + 2.

y= - (x2+9-6x)+2

y= -x2-9+6x+2

y= -x2-7+6x

y= -x2+6x-7

-y =  x2+7x-x-7

-y= x(x+7)-1(x+7)

-y= (x+7)(x-1)

which means the graph is on quadrate 2 or 3.

straight line graph of y = -(x - 3)² + 2.4

More details : brainly.com/question/20492082

#SPJ9

6 0
1 year ago
A student was trying to find the solution to a system of equations, but they were incorrect. Their explanation is shown below.
Lady_Fox [76]

Answer:

no solution

Step-by-step explanation:

if you subtract the equations then you get 0 = 8 and this can never be true; therefore there are no solution

7 0
3 years ago
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