HighschoolerGranny HighschoolerGranny

14-01-2015
Mathematics

contestada

What is the solution to the system of equations?

5x - 3y = -9
2x - 5y = 4

(_,_)

THANKS!!

Respuesta :

14-01-2015

Multiply the 1st equation by 2 and the 2nd by 5 to get:
10x-6y= -18
10x-25y=20
subtract equation 2 from equation 1 and the x's cancel:
10x-6y= -18
10x-25y=20
19y= -38
y= -2
substitute y= -2 into either of the original equations to get x= -3
(-3, -2)

Answer Link

Otras preguntas

Draw the major condensation product obtained by treatment of ethyl 3-methylbutanoate with sodium ethoxide in ethanol.

lithium and francium have similar properties because they

Brenda has an associate’s degree earning the median salary. She wants to quit working and go to college to get just a basic bachelor’s degree. If she completes

If you run a particular reaction, and in theory it was supposed to yield 50.0 grams of product, and the percent yield is 75%, how many grams did you actually en

Question 1(Multiple Choice Worth 3 points) (06.01 MC) Richard's doctor says that he has become obese. What health risks is Richard now facing? Early signs of ca

(x+3)(x-5)=(x+3)(x−5)=

•Find the degree of each monomial5x²

4. Suppose you make $12 an hour as a lifeguard at the community pool during the summer. Let h represent the number of hours you work in a week. Write an express

s=(n(a_(1)+a_(n)))/(2)

What different, perhaps conflicting messages does the Prometheus myth convey about challenging the authority of the gods?