4 years ago

How many solutions does the system formed by x-y=3 and ay-ax+3a=0 have for a nonzero number a? Explain.

1 answer:

4 0

There's no solution that is nonzero.
x-y=3
x = 3+y

Substitute that to the second equation.
ay-a(3+y)+3a=0
6a=0
a=0

y = x-3

Substitute that to the second equation
a(x-3)-ax+3a=0
0 = 0

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3 years ago

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A 1178 foot cable weighs 266 pounds. How many pounds will 36 inches of cable weight? round answer to two decimal places (1 pound

Aliun [14]

Answer:

36 inches of cable weighs 0.68 lbs

Step-by-step explanation:

1178 ft cable weighs 266 lbs...and u want to know how many lbs a 36 inch cable weighs....

we need to turn ur ft to inches....1 ft = 12 inches....so 1178 ft = (1178 * 12) = 14,136 inches

14136 in. to 266 lbs = 36 in.to x lbs

14136 / 266 = 36 / x...cross multiply

14136x = (36)(266)

14136x = 9576

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