zpfhyyg8gv zpfhyyg8gv

06-07-2022
Mathematics

contestada

What is the solution to this system of linear equations? 3x + 4y = 11, x+4y=9

Respuesta :

erinsancia erinsancia

06-07-2022

3x+4y=11
4y=11-3x
Substituting this into x+4y=9
X+11-3x=9
-2x=9-11
-2x=-3
2x=3
X=3/2
Substituting this into x+4y=9
3/2+4y=9
4y=9-3/2
4y=18/2-3/2
4y=15/2
Y=15/2/4
Y=15/8

X=1 1/2
Y=1 7/8

Answer Link

Otras preguntas

I dont really know what to do here, ive done a which is -2 but dont know how to do b. It is not 1/2x -1.5

help please, i don’t understand this question

Help please thanks!!

Which of the following isatangent

Martin is saving money to buy a new phone that costs $1,000 by selling trees. He is using an app to manage his sales, but it keeps a fraction of each sale. His

please help me statistic and probability

Complete the text with the better conjunctive adverb. Writer Zora Neale Hurston struggled to achieve success during her lifetime, and when she died in 1960, she

whats 2+7a. 14b. 19c.88383838837

Ama bought 12 eggs at $1.10 each. If 3 of the eggs got broken and sold the remaining at $1.45 each, calculate the i. Total cost price ii. Total selling price ii

Calculate the grams of C6H6 needed to produce 25 g of CO2 Show your work