Which number will make the fractions equivalent 25/35

2 answers:

7 0

$\frac{25}{35} = \frac{25:5}{35:5} = \frac{5}{7} \\ \\ \frac{25}{35} =\frac{25\cdot2}{35\cdot2}= \frac{50}{70} \\ \\ \frac{25}{35} = \frac{25\cdot4}{35\cdot4} = \frac{100}{140}\\ \\ \frac{25}{35} = \frac{25\cdot10}{35\cdot10} = \frac{250}{350}$

ikadub [295]2 years ago

4 0

You could make an equivalent fraction by multiplying both numbers by 2.

$25*2=50\\35*2=70\\ \\ \frac{50}{70}$

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water stations will be placed every 600 meters of a fifteen kilometer race. how many water stations will be needed?

Snezhnost [94]

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15km=15000 metres
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5 0

2 years ago

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The augmented matrix of a system of equations has been transformed to an equivalent matrix inâ€‹ row-echelon form. Usingâ€‹ x, y

jenyasd209 [6]

Answer: The system of equations is:

x + 2y + 2 = 4

y - 3z = 9

z = - 2

The solution is: x = -22; y = 15; z = -2;

Step-by-step explanation: ONe way of solving a system of equations is using the Gauss-Jordan Elimination.

The method consists in transforming the system into an augmented matrix, which is writing the system in form of a matrix and then into a Row Echelon Form, which satisfies the following conditions:

There is a row of all zeros at the bottom of the matrix;
The first non-zero element of any row is 1, which called leading role;
The leading row of the first row is to the right of the leading role of the previous row;

For this question, the matrix is a Row Echelon Form and is written as:

$\left[\begin{array}{ccc}1&2&2\\0&1&3\\0&0&1\end{array}\right]$ $\left[\begin{array}{ccc}4\\9\\-2\end{array}\right]$