Gabrielle142
Gabrielle142
17-07-2014
Mathematics
Answered
find value of x and y
4.)2x-3y=-15
x=4y
Answer :
Аноним
Аноним
17-07-2014
[tex]\left\{\begin{array}{ccc}2x-3y=-15\\x=4y\end{array}\right\\\\substitute\\\\2\cdot4y-3y=-15\\8y-3y=-15\\5y=-15\ \ \ \ \ |both\ sides\ :5\\y=-3\\\\x=4\cdot(-3)=-12\\\\Solution:x=-12\ and\ y=-3.[/tex]
Answer Link
doss370
doss370
17-07-2014
2x - 3y = -15
x = 4y
substitute x frm eq2 to eq1
2 (4y) - 3y = -15
8y - 3y = -15
5y = - 15
y = -3
substitute y in eq2
x = 4(-3)
x = -12
y = -3 , x = -12
Answer Link
VIEW ALL ANSWERS ( 38+ )
Other Questions
What do we call the 1000year period after the fall of Rome
In Vietnamese society what class was exempt from taxes and military service A Bonzes B Peasantry C Aristocracy D Daimyo
Where did the Nile river start and end What did people do there
The specific genetic makeup of an individual is their 1Genotype 2Phenotype 3Characteristics 4Traits
Which best describes the significance of the Epic of Gilgamesh A It explains why the Sumerians went to war against their neighbors and how they won wars B It is
what is the quotient of4968 divided by 12 show work if can
what is 452 to the nearest thousand
Explain in terms of electrons why the radius of a potassium atom is larger than the radius of the potassium ion in the ground state
Solve the equation 4x42x10 Someone help
How do enhancers accelerate the transcription of a gene
