salima3oma
salima3oma
01-02-2017
Mathematics
contestada
{2x+5y=26} {3x+4y=26}
Respuesta :
texaschic101
texaschic101
01-02-2017
2x + 5y = 26....multiply by 3
3x + 4y = 26...multiply by -2
------------------
6x + 15y = 78 (result of multiplying by 3)
-6x - 8y = - 52 (result of multiplying by -2)
-----------------add
7y = 26
y = 26/7 (or 3 5/7)
2x + 5y = 26
2x + 5(26/7) = 26
2x + 130/7 = 26
2x = 26 - 130/7
2x = 182/7 - 130/7
2x = 52/7
x = 52/7 * 1/2
x = 52/14 which reduces to 26/7 (or 1 5/7)
solution is : (26/7, 26/7)
Answer Link
VER TODAS LAS RESPUESTAS ( 42+ )
Otras preguntas
Find the slope of the regression line. Shots on goal 22, 25, 28, 29, 33 Points scored 5, 7, 7, 9,8 A -0.561 B 0.283 C. 0.631 D. 0.794
• perception: organization, identification and interpretation of sensory information in order to represent and understand the presented formation or environment
Poems (poetry) by Emily Dickinson Much Madness Is Divinest Sense Much Madness is divinest Sense We Grow Accustomed to the Dark.. what do you think the title of
Correct the errors and fill in the blanks by completing the square.
how to solve if 5a=6 and 7b=8, 35ab= (please explain, i need explaination)
Discuss the difference between the following terms: control group, independent variable, and dependent variable. Please don’t search up the answer.
Help I have no clue what are the answers I tried 30 times!
100cl 1kl which is greater
Alexis and her sister bought school supplies. Alexis bought 5 spiral notebooks and 6 book covers for $27. Her sister bought 4 spiral notebooks and 2 book covers
a woman walks due west on the deck of a ship at 3 mi/h. the ship is moving north at a speed of 18 mi/h. find the speed and direction of the woman relative to th
