hearts45 hearts45

03-11-2018
Mathematics

contestada

Help me find the answers for number problem 3 please

Help me find the answers for number problem 3 please class=

Respuesta :

Mareska95 Mareska95

03-11-2018

x + 2y = 5 /* (-1)

3x + 2y = 9

__________

-x - 2y = -5

3x + 2y = 9

add these two equations

_______________

2x = 4

x = 4/2 = 2$ for a hotdog

2y = 5 - x = 5 - 2 = 3 => y = 3/2 = 1.5$ for a hamburger

Answer Link

Otras preguntas

Do four year colleges offer on-campus housing

What are the four main categories used to develop a narrative

PLEASE HELP The results of a random sample of 1000 people are recorded in table one use this data to answer the questions that follow of the 320 million people

Whitney needs to borrow $200 for school supplies. If she borrows the same amount from 5 friends, which equation will show now much she owes each friend? $200

What does it mean when Britain declares the right "to BIND us in ALL CASES WHATSOEVER"? The queen of England is going to tie up disloyal citizens. The Americans

Which of these numbers is the same as 4-2? A. -8 B. 1 C. lo D. 16

What is the equation of a line, in general form, with a slope of -2 and a y-intercept of 8? A.x + 2y - 8 = 0 B.2x + y - 8 = 0 C.2x - y + 8 = 0

how do levels of thermal energy and speed differ between low and high friction surfaces? how does this difference relate to a transformation of energy?

Please help!!!A shooting star forms a right triangle with the Earth and the Sun, as shown below: A right triangle is shown with the vertices labeled Earth, Su

to cancel a term.its necessary to add the _____to both sides of the equation