kyliemo2003 kyliemo2003

01-02-2017
Mathematics

contestada

Solve the system of equations.
2x-y=5
3x+2y=4

A.) (3,1)
B.) (0,2)
C.) (2,-1)
D.) (9/7,17/7)

Respuesta :

Jedimaster13 Jedimaster13

01-02-2017

2x - y = 5 also equals 4x - 2y = 10

4x-2y=10
+3x+2y=4
7x = 14
x = 2

2(2) - y = 5
-y = 1
y = -1

so, B. (2,-1)

Answer Link

Otras preguntas

The relationships that organisms have with one another are an important part of the balance among species within ecosystems. Which type of symbiotic relationshi

how does the Statue of Liberty feel toward the immigrants entering America

Which expression is equivalent to x + x + y + y? A) 2x2y B) 2x + 2y C) 4 + xy D) 4xy

IThere are 5 times as many males as females on the maths course at university. What fraction of the course are male? Give your answer in its simplest form.

if 1/f= 1/u+1/v , make f the subject of the formula.help plzzzzz.

Of the 400 7th graders at Emerson middle school 30% play in the band and 1/5 participate in sports no student does both is it reasonable to say that 100 student

50 POINT QUESTION A 90% confidence interval for a proportion is found to be (0.60, 0.68). What is the margin of error?

Can someone fill in the blanks for these three questions?

14 Select the correct text in the passage. In which set of lines in this excerpt from T.S. Eliot's "The Love Song of J. Alfred Prufrock" does the speaker compar

describe harrys reaction when hagrid informs him that he is a wizard. why dose he react this way?