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musickatia [10]
3 years ago
8

Help! Find the value of x for which ABCD must be a parallelogram.

Mathematics
1 answer:
Stolb23 [73]3 years ago
5 0
3
In a parallelogram, the diagonals (the lines inside from corner to corner) bisect each other. That means the two halves of the diagonal are equal to each other.
So
-9-6x=x-30
-9-6x+6x=x-30+6x
-9=7x-30
21=7x
x=3
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Which operation properly transforms matrix I to matrix II?
Y_Kistochka [10]

Answer:

D

Step-by-step explanation:

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7 0
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PLEASE HELPPPPP!!! GIVING BRAINLIEST!!!!
lina2011 [118]

The integers that make the linear equation false are:

3, 78, and 126

We found that by evaluating the equation in all the options.

<h3>Which integers make the equation false?</h3>

Here we have the linear equation:

8m - 15 = 5m + 63

And the possible solutions are:

S: {3, 26, 78, 126}

To see which of these integers make the equation false, we can replace the value of m by the given values and see when the equation is false (the number in the left is different to the one in the right).

if m = 3

8*3 - 15 = 5*3 + 63

9 = 78    this is false.

if m = 26

8*26 - 15 = 5*26 + 63

193 = 193  this is true.

if m = 78

8*78 - 15 = 5*78 + 63

609 = 453  this is false.

if m= 126

8*126 - 15  = 5*126 + 63

993 = 693  this is false.

So the integers that make the equation false are:

3, 78, and 126.

Learn more about linear equations:

brainly.com/question/1884491

#SPJ1

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