penningtonca
penningtonca penningtonca
  • 12-01-2022
  • Mathematics
contestada

Solve the system of linear equations by elimination.
9x+2y=39
6x+13y=−9

Respuesta :

Аноним Аноним
  • 12-01-2022

y = -3

x = 5

Explanation:

[tex]9x + 2y = 39 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: (2)\\ 6x + 13y = - 9 \: \: \: \: \: \: \: \: \: \: \: \: ( - 3) \\ \\ 18x + 4y = 78 \\ - 18x - 39y = 27 \\ \\ - 35y = 105 \\ y = \frac{105}{ - 35} \\ y = - 3 \\ \\ \\ 9x + 2y = 39 \\ 9x + 2( - 3) = 39 \\ 9x - 6 = 39 \\ 9x = 39 + 6 \\ 9x = 45 \\ x = \frac{45}{9} \\ x = 5[/tex]

Answer Link

Otras preguntas

Question is 15 points
Kevin went fishing and is using a scatterplot to analyze the relationship between the weight of each of the fish he caught in pounds and in kilograms. He uses t
ANSWER PLZ QUICK AND FAST
Alfred is practicing typing. The first time he tested himself, he could type 26 words per minute. After practicing for a week, he could type 28 words per minute
I need help with 72-75, Thank you! Explain.
which of the followimg statement is false
What determines the direction a Power Water Craft will travel?
The standard deviation of a population is known to be 7.8. If the sample size is 85, what is the standard error of the mean? a. 0.22 b. 0.85 c. 1.047 d. 6.0
What type of government did Anti-Federalists favor?
A positive integer is twice another. The difference of the reciprocals of the two positive integers is 1/8. Find the two integers