renad17ahmed renad17ahmed

26-01-2017
Mathematics

contestada

Elimination of
x-y=11
2x+y=19

Respuesta :

apologiabiology apologiabiology

26-01-2017

ggeasy

we can eliminate the y terms by adding the equations

x-y=11
2x+y=19 +
3x+0y=30

3x=30
divide by 3
x=10

subb ack
x-y=11
10-y=11
minus 10 both sides
-y=1
times -1
y=-1

(x,y)
(10,-1)

Answer Link

Otras preguntas

A plane travels 2.5 KM at an angle of 35 degrees to the ground, then changes direction and travels 5.2 km at an angle of 22 degrees to the ground. What is the m

For which value of k will the roots of the equation 2x^2-5x+k=0 be real and rational numbers

Which scenario describes eustres A.your heart start before fast and you get very nervous when the new report that your house is in the path of the tornado B.you

Where is Toronto in Canada?

What is Kant's purpose in writing "What is Enlightenment?" What does this term mean?

Give the percent yield when 28.16 g of co2 are formed from the reaction of 8.000 moles of c8h18 with 4.000 moles of o2. 2 c8h18 + 25 o2 → 16 co2 + 18 h2o

Identify the alkane that contains four carbons.

What is the perimeter of the rectangle shown on the coordinate plane, to the nearest tenth of a unit? 15.3 units 20.4 units 30.6 units 52.0 unit

In "the strength of weak ties," what are the implications of mark granovetter's findings?

Find a formula for the sum of the first n even positive integers. b.prove the formula that you conjectured in part (a)