MinnieTewksbury497 MinnieTewksbury497

04-06-2015
Mathematics

contestada

3x + y = 19 , and x + 3y = 1. Find the value of 2x + 2y
a. 20
b. 18
c. 11
d. 10
e. 5

Respuesta :

04-06-2015

[tex]3x+y=19 \\ x+3y=1 \\ \\ \hbox{add the sides of the equations:} \\ 3x+x+y+3y=19+1 \\ 4x+4y=20 \\ \\ \hbox{divide both sides by 2:} \\ 2x+2y=10[/tex]

The answer is d. 10.

Answer Link

Otras preguntas

A sweater that originally cost $40 is on sale for 10 percent off. What is the amount of the discount? $2 $4 $30 $36

what safety considerations were made when building the louvre museum?

If Michel could have taken the noon train, he ______ in time for the meeting this evening.

6. What was the likely argument John Quincy Adams made for why the Africans should be free? Amistad case

For the molecule allene, h2 c = c = ch2, give the hybridization of each carbon atom. Will the hydrogen atoms be in the same plane or perpendicular planes?

Good evening! Can someone please answer this, ill give you brainliest and your earning 50 points. Would be very appreciated.

The price of a used car that Billy is buying is $5,000. If he has to pay 8% in taxes, how much will be have to pay for the car including taxes?

Can someone help me with this question?

Mood swings __________ question 2 options: are a sign that something is wrong. do not lead to strong feelings. can always be controlled. are part of growing up.

Find all real $x$ that satisfy $(2^x - 4)^3 (4^x - 2)^3 = (4^x 2^x - 6)^3. $