trackboy
trackboy
25-02-2016
Mathematics
contestada
What is-2x+6y=6 7x+8y=-6?
Respuesta :
dhgurwls
dhgurwls
25-02-2016
we can solve this by substitution
-2x=6-6y
-2x/-2=(6-6y)/-2
x= -3+3y
7(-3+3y)+8y=-6
-21+21y+8y=-6
29y=15
y=15/29
-2x+6(15/29)=6
-2x+90/29=6
-2x=6-90/29
-2x= 174/29-90/29
-2x= 84/29
-2x(29)=(84/29)29
-54x=84
x= -84/54
x= -14/9
so x= -14/9
y= 15/29
Answer Link
VER TODAS LAS RESPUESTAS ( 68+ )
Otras preguntas
what is the climat means in English grammar?
Using complete sentences, explain how to find the quotient of 8 2/3 divided by 1 3/5 Make sure to include the quotient in your answer.
what is the maximum concentration of salt in water for an ecosystem to be classified as a freshwater system?
I NEED THIS DONE RIGHT 100% ACCURATE Apellido refers to a person's last name True or False
Outliers have very little or no effect on which of the following check all that apply mean median mode range or standard deviation
The hypotenuse of a right triangle is three times the length of one of its legs. The length of the other leg is four feet. Find the lengths of the three sides o
In Japanese, kintsugi means "golden joinery. " This art form embodies several Japanese ideas related to art and life. These include wabi-sabi, an appreciation f
Where is an earthquake likely to occur? Question 13 options: wetlands abysmal plain plate boundaries Kansas.
2. Two equipotential lines are separated by a distance of 2.17 cm. If the potential values of the lines are 5.9 volts and 8.6 volts, what would the strength of
You find a rock that is about 20 grams large. This rock contains about 10 grams of Uranium-235 and 10 grams of the element it decays into (Thorium-231). The hal
