Seudónimo
Seudónimo
02-12-2016
Mathematics
contestada
solve system by elimination
9x-3y=3
3x+8y=-17
Respuesta :
apologiabiology
apologiabiology
02-12-2016
multiply 2nd equation by -3 and add to first
9x-3y=3
-9x-24y=51+
0x-27y=54
-27y=54
divide both sides by -27
y=-2
sub back
3x+8y=-17
3x+8(-2)=-17
3x-16=-17
add 16 to both sides
3x=-1
divide 3
x=-1/3
(x,y)
(-1/3,-2)
Answer Link
VER TODAS LAS RESPUESTAS ( 23+ )
Otras preguntas
Which of the following words correctly describe a triangle with two 45 angles? Check all that apply.
When the language being studied in the classroom is spoken mainly in other countries, it is referred to as this?
a pregnant woman planning her diet should generally include an extra 2000 calories per day
Capital Requirements
A. 3/22 B. 3/7 C. 8/15 D. 8/11
The global warming that is taking place today will likely have negative impacts for humans, such as:
What was an outcome of the War of 1812? A. American troops abandoned England. B. England gained land. C. The United States gained land. D. Sim
Which of these foods might sound healthy but may not in fact be healthy? Check all that apply. trail mix with pieces of sweetened fruit dried fruit snacks energ
what is the volume of the rectangular prism? A. 138 yd^3 B. 63 yd^3 C. 22.5 yd^3 D. 7 yd^3
a student is chosen at random from a 7th grade math class of 16 girls and 8 boys. find each probability
