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Elena-2011 [213]
3 years ago
13

What's the solution of x+2/5= 12 ?

Mathematics
2 answers:
Feliz [49]3 years ago
8 0

Answer:

11 3/5

Step-by-step explanation:

x+2/5=12

First, you subtract 2/5 from both sides, so the equation becomes:

x=11 3/5

Therefore, x equals 11 3/5

valkas [14]3 years ago
4 0

Answer:

i got x=62/5 =12.400

Step-by-step explanation:

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Which of these trends represents an inverse variation?
BaLLatris [955]

I think it is the first one could be wrong tho

8 0
3 years ago
The temperature falls from 3 degrees Celsius to -4 degrees celcius what is the the difference in these temperatures
STatiana [176]

Answer:

7

Step-by-step explanation:

3 - -4=7

6 0
3 years ago
Find all solutions of the given system of equations (If the system is infinite many solution, express your answer in terms of x)
lisov135 [29]

Answer:

(a) The system of the equations \left \{ {2x-3y\:=3} \atop {4x-6y\:=3}} \right. has no solution.

(b) The system of the equations \left \{ {4x-6y\:=10} \atop {16x-24y\:=40}} \right. has many solutions y=\frac{2x}{3}-\frac{5}{3}

Step-by-step explanation:

(a) To find the solutions of the following system of equations \left \{ {2x-3y\:=3} \atop {4x-6y\:=3}} \right. you must:

Multiply 2x-3y=3 by 2:

\begin{bmatrix}4x-6y=6\\ 4x-6y=3\end{bmatrix}

Subtract the equations

4x-6y=3\\-\\4x-6y=6\\------\\0=-3

0 = -3 is false, therefore the system of the equations has no solution.

(b) To find the solutions of the system \left \{ {4x-6y\:=10} \atop {16x-24y\:=40}} \right. you must:

Isolate x for 4x-6y=10

x=\frac{5+3y}{2}

Substitute x=\frac{5+3y}{2} into the second equation

16\cdot \frac{5+3y}{2}-24y=40\\8\left(3y+5\right)-24y=40\\24y+40-24y=40\\40=40

The system has many solutions.

Isolate y for 4x-6y=10

y=\frac{2x}{3}-\frac{5}{3}

3 0
3 years ago
Ricardo ran 160 minutes last week at the park. If he runs 15% more this week, how many
Ilia_Sergeevich [38]

Answer:

4356

Step-by-step explanation:

<u><em>Don't be a baka</em></u>

<u />

8 0
3 years ago
What is the result of subtracting the second equation from the first?
dusya [7]

Answer: 11x-8y=-9

Step-by-step explanation:

For this exercise you need to remember:

1) The mulitplication of signs:

(+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-

2) By definition, like terms contain the same variables with the same exponent.

Then knowing this, and given the equations:

8x - 4y = -4 and -3x+ 4y = 5

You must subtract the like terms, which means that you must subtract the numerical coefficients of each term.

Then, you get the result is:

8x - 4y = -4\\-3x+ 4y = 5\\...............................................\\8x-(-3x)-4y-4y=-4-5\\8x+3x-8y=-9\\11x-8y=-9

5 0
3 years ago
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