s1haPieraCharyg7irl s1haPieraCharyg7irl

25-05-2016
Mathematics

contestada

What is the solution of the system? Use elimination.
5x – y = 20
2x + y = 15
A) (5, 5)
B) (7, 35)
C) (7, 0)
D) (5, -5)

Respuesta :

Willchemistry Willchemistry

25-05-2016

{ 5 x - y = 20
2 x + y = 15
_____________
7 x = 35

x = 35 / 7

x = 5

For y :

2 x + y = 15

2*(5) + y = 15

10 + y = 15

y = 15 - 10

y = 5

Answer A ( 5,5 )

hope this helps!

Answer Link

Otras preguntas

A prospective buyer contacts Pam, a broker, about a house on the market. The buyer tells Pam that he does not like Asians, and asks her whether there are many A

Read this excerpt from the play An Adventure for Detective Dennis: Stars twinkle in the windows of the library. What element of a play is shown in this text? C

Why did working-class teens in Los Angeles and elsewhere take up the zoot-suit style of Mexican American youths during World War II

70.4 divided by 11 with work shown

Which Box-and-Whisker Plot below correctly illustrates the data shown below? {22, 24, 24, 25, 26, 26, 27, 28, 28, 30} A. B. C. D.

What is the domain of the function f(x)=−12x+15? PLEASE HELP!!! x≤30x≤30 x≥0x≥0 x≥−2x≥−2 all real numbers

is snowflake a mixture or substance?

Beethoven composed thirty-two ______ sonatas, which pushed the expressive possibilities of the instrument far past previous works in the genre.

What type of triangle has only two congruent sides?.

Helppppppppppppppppppp!!!