saintsfan2004 saintsfan2004

13-11-2018
Mathematics

contestada

Please help please i really need this answer

Please help please i really need this answer class=

Respuesta :

Mareska95 Mareska95

13-11-2018

We have the system of equations:

3x + 5y = 10

x + 5y = 2 => x = 2 - 5y

__________________

3*(2 - 5y) + 5y = 10

6 - 15y + 5y = 10

-4 = 10y

y = -4/10 = -2/5 => x = 2 - 5*y = 2 - 5*(-2/5) = 2 + 2 = 4

The correct answer is x = 4.

Answer Link

Otras preguntas

ratio problem, please give solution as well. A dealer raises the price of a $24000 air conditioning unit by 12.5 %. To restore the previous price, he must redu

A truth table with three inputs has how many switch combinations?

A charge of 0.01 C is in a 120 N/C electric field. What is the force on the charge?

how does Earth's atmosphere make conditions on Earth suitable for living things?

Can 9, 40, 41 be the side lengths of a triangle? If so, is it acute, obtuse, or right?

how does Earth's atmosphere make conditions on Earth suitable for living things?

3/4(n+3)=9 how do I find n

Is it possible for a number to be a rational number that is not an integer but is a whole number? PLEASE EXPLAIN

2.53 × 3.1 is between

How can buoyant forces be measured?