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slava [35]
3 years ago
12

The difference between 3 times a number x and 2 is 19. What is the value of x? ​

Mathematics
1 answer:
Lisa [10]3 years ago
7 0

Answer:

The answer is 7

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I WILL MARK YOU BRAINLYEST if you answer all of my problems !!!!!!!!!!!
Romashka [77]

First, let's convert each line to slope-intercept form to better see the slopes.

Isolate the y variable for each equation.

2x + 6y = -12

Subtract 2x from both sides.

6y = -12 - 2x

Divide both sides by 6.

y = -2 - 1/3x

Rearrange.

y = -1/3x - 2


Line b:

2y = 3x - 10

Divide both sides by 2.

y = 1.5x - 5


Line c:

3x - 2y = -4

Add 2y to both sides.

3x = -4 + 2y

Add 4 to both sides.

2y = 3x + 4

Divide both sides by 2.

y = 1.5x + 2


Now, let's compare our new equations:

Line a: y = -1/3x - 2

Line b: y = 1.5x - 5

Line c: y = 1.5x + 2

Now, the rule for parallel and perpendicular lines is as follows:

For two lines to be parallel, they must have equal slopes.

For two lines to be perpendicular, one must have the negative reciprocal of the other.

In this case, line b and c are parallel, and they have the same slope, but different y-intercepts.

However, none of the lines are perpendicular, as -1/3x is not the negative reciprocal of 1.5x, or 3/2x.

<h3><u>B and C are parallel, no perpendicular lines.</u></h3>
8 0
3 years ago
Julia has 4 gallons 2 quarts of water.Ally needs the same amount of water but only has 12 quarts.How much more water does Ally n
ozzi
Ok so what do we know :
 
4 quarts = 1 gal
Julia has 4gal and 2 quarts or 18 quarts
ally has 12 quarts

so if julia has 18 quarts and ally has 12 that means that ally needs 6 more quarts (or 1gal 2 quarts) so that she and julia can have the same amount
8 0
3 years ago
Read 2 more answers
A car travels at an average speed of 68 miles per hour. how many miles does it travel in 5 hours and 15 minutes?
blagie [28]
Distance = rate times time.  Thus,

d = (68 mph) (5.25 hrs) = 357 miles (answer)
5 0
3 years ago
it takes about me 25 minutes to make out a test for a mathamatics class. How long will it take to make out tests for all fve of
Elza [17]
150 minutes of mathmatices class
3 0
2 years ago
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Find the cardinality of the following set. A = { 12 , 14 , 16 , 18 , 20 }
madam [21]

Answer:

2

Step-by-step explanation:

Because they are using the number line: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20

6 0
2 years ago
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