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Inessa [10]
3 years ago
9

What is the solution to the gaming systems of linear equations 2X plus 3Y equals 13 for a 6+ 6Y equals 14

Mathematics
2 answers:
Harlamova29_29 [7]3 years ago
8 0

9514 1404 393

Answer:

  (x, y) = (-6, 8 1/3)

Step-by-step explanation:

The system of equations appears to be ...

  • 2x +3y = 13
  • 6x +6y = 14

Dividing the first equation by 2 gives ...

  3x +3y = 7

Subtracting the first equation from this, we get ...

  (3x +3y) -(2x +3y) = (7) -(13)

  x = -6

Then substituting for x in the first equation, we have ...

  2(-6) +3y = 13

  3y = 25 . . . . . . . . add 12

  y = 25/3 = 8 1/3 . . . . divide by 3

The solution is (x, y) = (-6, 8 1/3).

Artist 52 [7]3 years ago
4 0

Answer:

(9/2, 4/3) or just x = 9/2, y = 4/3. (it's the same thing)

Step-by-step explanation:

First, multiply the first equation 2x + 3y = 13 by 2, so that you get 4x + 6y = 26. Now you have the same coefficient for y. Now, subtract the second equation 6y = 8 (i simplified it first) from the first one that is doubled. After that, you would have just one equation, 4x = 18. So x = 18/4 = 9/2. Substitute x to solve for y, and you'd get 4/3.

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Work out <br> 8(m + 1) = 32<br> m=?
Nat2105 [25]

Answer:

<h2>m = 3</h2>

Step-by-step explanation:

8m + 8 = 32

<em>Subtract 8</em>

8m = 24

<em>Divide by 8</em>

m = 3

3 0
4 years ago
Read 2 more answers
Hey guys so I have a question I am not really sure about and confused so let's say we have an inequality its
Troyanec [42]

Answer:

Step-by-step explanation:

This is an easier way

-10p\left(-70\right)\left(-1\right)\\\\Simplify\\\left(-10p\right)\left(-1\right)>\left(-70\right)\left(-1\right)\\\\\mathrm{Divide\:both\:sides\:by\:}10\\\frac{10p}{10}>\frac{70}{10}\\\\Simplify\\p>7

I think this is what u meant

\frac{-10p}{-10} < \frac{-70}{-10} \\\\p > 7

4 0
3 years ago
2 Points
Over [174]

Answer:

A. Five places to the left

Step-by-step explanation:

Scientific notation is a method used so we can show a very big/small number easier. Rather than putting so many zeroes, we put the number in the format of a number multiplied by 10^x.

Before putting a number into scientific notation, you need to know which number is a significant  figures. In this question, there are two significant figure which is 39, all zeroes on the right is insignificant. We can move the decimal to convert the number into 3.9 * 10^5. Basically you need to move the decimal to the left  if the exponent positive, but move it to the right if its negative. The exponent is +5 so we move the decimal points 5 places to the left.

6 0
3 years ago
For a constant function, the y-coordinate is __________ for every pair of points selected, so the average rate of change always
sergij07 [2.7K]

In mathematics, a constant function is one defined in which a function whose output value (y) is the same for every value of the input variable (x). Therefore this means that whatever is the value for x, the value of y would always be the same. Hence we can say that the function is a straight horizontal line in a Cartesian plane.

Since the value of y does not change, and the average rate of change has the formula:

average rate of change = (y2 – y1) / (x2 – x1)

So y2 – y1 = 0 therefore average rate of change is also zero.

 

Hence to complete the sentence:

For a constant function, the y-coordinate is <u>the same</u> for every pair of points selected, so the average rate of change always has a value equal to <u>zero</u>.

4 0
3 years ago
please help !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!111 -9 2/7 - (-10 3/7) I NEED IT AS A FRACTION
mario62 [17]
8/7 exact form
or
 1 1/7 mixed number form
7 0
3 years ago
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