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Ira Lisetskai [31]
4 years ago
12

3x-2y=13 2x+3y=-16 are these lines parallell or perpendicular or neither

Mathematics
1 answer:
Lelechka [254]4 years ago
6 0
3x - 2y = 13
-2y = -3x + 13
y = 3/2x - 13/2...slope is 3/2, y int is -13/2

2x + 3y = -16
3y = -2x - 16
y = -2/3x - 16/3...slope = -2/3, y int is -16/3

perpendicular lines will have negative reciprocal slopes. To find the negative reciprocal of a number, flip the number and change the sign.
On the 1st equation, the slope was 3/2....find its negative reciprocal.....flip it, making it 2/3....change the sign...making it -2/3. So the negative reciprocal of 3/2 is -2/3. 

So if one equation has a slope of 3/2 and another equation has a slope of -2/3, then these lines are perpendicular <==
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Problem # 35, how do you make an equation out of this, would it be x+x+2?
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Thus. .. n+n+1=29
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7 0
3 years ago
How do you do this?? <br> explain it well please!
Nesterboy [21]
First you want to combine like terms. on the first equation we can combine 2x+x=3x. So now we have 3x-3. On the right side we can combine 12+1 so we now have -x+13. Now we will take add an x to -x so it's 0 but we have to do it to the other side as well so now we have 4x-3=13. now we will add three to -3 to make it 0 but again we have to do it to the other side. Now we have 4x=16. We want to figure out what x is so we now divide 4x by 4 so we are just left with x but we need to do it to the other side so your answer is x=4
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3 years ago
If AG + GH = 10, then may GH = AG + 10?
Natali [406]
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7 0
4 years ago
I WILL GIVE U BRAINLIEST AND THANKS AND 5 STARS please help this is very important this is a big part of my grade
elena-14-01-66 [18.8K]
1. x=6
2. x=8/125
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5 0
3 years ago
a number card numbered from 1 to 30 is drawn randomly.what is the probability of getting the card having the number which is the
Kisachek [45]
<h3>Answer:    1/3</h3>

===================================================

Explanation:

A = multiples of 5 between 1 and 30

A = {5,10,15,20,25,30}

B = multiples of 6 between 1 and 30

B = {6,12,18,24,30}

There are 6 items in set A and 5 items in set B. This gives 6+5 = 11 items overall; however, notice that "30" shows up twice. So we have to subtract off 1 to account for this. This means there are 11-1 = 10 unique values that are either a multiple of 5, a multiple of 6, or a multiple of both. This is out of 30 numbers in the set {1, 2, 3, ... , 29, 30}

The probability we want is 10/30 = 1/3

6 0
2 years ago
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