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lozanna [386]
3 years ago
13

Determine the solution of the system. Show your work. Y = 5x – 9 Y = 2x + 6

Mathematics
2 answers:
Alborosie3 years ago
6 0

The solution is (x, y) = (5, 16). My "work" is to make use of a graphing calculator.



_____

You can subtract the second equation from the first. This gives

... 0 = 3x -15

Then, divide by 3 and add 5.

... 0 = x - 5

... 5 = x


Substitute this value into either equation to find y.

... y = 2x +6

... y = 2·5 +6

... y = 16


The strategy to subtract the second equation from the first is based on the observation that both equations give expressions for y, and the x-coefficient in the first equation is the larger of the two x-coefficients. Thus, the subtraction we chose will eliminate y and give an x-term with a positive coefficient.

snow_tiger [21]3 years ago
5 0
Both define y, so they are equivalent.

5x-9=2x+6
3x-9=6
3x=15
x=5

Then plug in x into any of the equations
y=2(5)+6
y=10+6
y=16

Final answer: (5,16)
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<span><u><em>Answer:</em></u>
9

<u><em>Explanation:</em></u>
To get the fraction of a number, you will simply multiply the fraction by the given number.

For the given, we want to find </span>\frac{1}{5}<span> of 45.
<u><em>This can be computed as follows:</em></u>
</span>\frac{1}{5} of 45 = \frac{1}{5}<span> * 45

= </span>\frac{1*45}{5}

= \frac{45}{5}

<span>= 9

Therefore, </span>\frac{1}{5}<span> of 45 is 9

Hope this helps :)</span>
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3 years ago
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6 0
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A А<br> С<br> B.<br> ZABC is bisected by BD. If m DBC = 65°,<br> then m ZABC = [?]°<br> Enter
andrew11 [14]

Answer:

m∠ABC = 130°

Step-by-step explanation:

BD is the angle bisector of angle ABC .

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4 0
3 years ago
if the denominator of 2/3 is increased by number and the numerator is doubled the result is 1 find the number
Sophie [7]
2/3
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numerator is doubled so 2(2)= 4
in order for it to be a whole (or 1) then it would have to be 4/4
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Nostrana [21]

Answer:

c and w is the right answer

Step-by-step explanation:

alternate angle

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