bradensanchez11
bradensanchez11
02-12-2014
Mathematics
contestada
how do i solve 7x-y=21
Respuesta :
NasimAljabri
NasimAljabri
02-12-2014
it is 3 because we multiply 3 and 7 and we get 21
Answer Link
aceituno98
aceituno98
02-12-2014
The answer answer is actually -3 because you divided 7 from 21 and you get 3 then you divided -1 because the y has a negative sing on it and you want it to be positive. That is why the answer is -3
Answer Link
VER TODAS LAS RESPUESTAS ( 76+ )
Otras preguntas
Solve the system of equations. x + 3y = −1 2x + 2y = 6 (−4, 1) (2, −1) (4, −1) (5, −2)
a sample of calcium has a volume of 10.0 ml. the density of calcium is 1.55 g/ml. which is the correct expression to calculate the mass of the sample using dime
jim ran 15.2 miles over the weekend . he ran 6.75 miles on saturday. how many miles did he run on sunday?
A stir is offering a 20% discount on all sales over $50. If you purchase a shirt an a pair of jeans for $62.50, what is the amount of the discount you would rec
A 0.450 kg baseball comes off a bat and goes straight up. At a height of 10.0 m, the baseball has a speed of 24.5 m/s. Determine its mechanical energy at this h
Prompt: Marisol’s mom is a dental hygienist, living paycheck to paycheck to make ends meet. Marisol’s dad has been sick for years and is unable to work. Marisol
14/9 as a mixed number
Two spherical pieces of cookie dough have radii of 3cm & 5cm. The pieces are combined to form one large spherical piece of dough. What is the approximate ra
Which geometric instrument would I use to measure the length of a segment, the compass or the straightedge? Explain your answer.
Maps frequently include a grid system to pinpoint the location of a place. A. True B. False
