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bixtya [17]
3 years ago
6

Solve the system of equation 2x-9y=14 x=-6y+7

Mathematics
2 answers:
grandymaker [24]3 years ago
8 0

x=7 and y=0 those are the answers

n200080 [17]3 years ago
5 0
You know the value of x: -6y +7
So you can replace the x in the first equation:
2*(-6y+7)-9y = 14 
distributive law
-12y+14-9y = 14
-21y+14=14
-14
-21y = 0
:(-21)
y = 0
Now you replace the y in the seccond equation with 0
x = -6*0+7
x = 7

ANSWER: x is 7 and y is 0


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(d)0.6

Step-by-step explanation:

(a)Frequency Distribution

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(b)The relative frequency distribution.

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(c)The cumulative frequency distribution.

\left|\begin{array}{c|c|c}$Waiting Time(in Minutes)&$Frequency&$Cumulative Frequency\\-----------&--&---\\0-4&4&4\\5-9&8&12\\10-14&5&17\\15-19&2&19\\20-24&1&20\\--&--&--\\Total&20\end{array}\right|

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Proportion of customers needing an oil change who wait 9 minutes or less.

=\dfrac{12}{20} \\\\=0.6

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photoshop1234 [79]

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Graph C has a negative slope, just like the equation, and the y-intercept is at the point (0,1), just like the equation states.

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2 years ago
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