elliesmith16 elliesmith16
  • 08-02-2021
  • Mathematics
contestada

solve the following simultaneous equations using an algebraic method.

5x + 3y = 11
2x - 7y = 29


will be grateful!

Respuesta :

chloenataliewong chloenataliewong
  • 08-02-2021
y = -3
x = 4

5x + 3y = 11 [1]
2x - 7y = 29. [2]

[1]*2
10x +6y = 22 [3]

[2]*5
10x - 35y = 145. [4]

[4]-[3]
-41y = 123
y = -3
sub y into 5x +3y = 11

Answer Link

Otras preguntas

Please help and show your work
A pre-paid cell phone company charges $12.95 as a monthly access fee and .16 cents per minute of calling time. Express the monthly cost C in terms of minutes o
Tickets for a show are $70 for adults and $50 for children. For one evening performance, a total of 300 tickets were sold and the receipts totaled $17,200. how
For each value of x, determine whether it is a solution to 16 <_2x. Is it a solution? x Yes No 8 12 5 10
Christina earns $250 a week. To budget money, she pays $135 in bills each week. How much money does Christina have left at the end of the month?
Find the area for the circle to the nearest hundredth. d = 15 m A 23.55 m2 B. 47.12 m2 C. 176.71 m2 D. 554.60 m2
Which of the following factors determines the size of an atom?(a) The volume of the nucleus; (b) the volume of space occupied by the electrons of the atom.(c) t
Upon what did the economy of the Southem Colonies largely depend?
The radius of a strontium atom is 215 pm. How many strontium atoms would have to be laid side by side to span a distance of 4.19 mm?
Solve the following equation1) 2c + c + 12 = 78​