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Lerok [7]
3 years ago
6

2x+8y=6, -5x-20y=-15need work because I don't understand

Mathematics
1 answer:
Vlada [557]3 years ago
4 0

Answer:

Infinitely many solutions.

Step-by-step explanation:

Step: Solve 2x + 8y = 6 for x:

2x + 8y = 6

2x + 8y + −8y =6 + −8y (Add -8y to both sides)

2x = −8y + 6

2x/2 = (-8y + 6)/2 (Divide both sides by 2)

x = −4y + 3

Step: Substitute −4y + 3 for x in −5x − 20y = −15:

−5x − 20y = −15

−5 (−4y + 3 ) −20y = −15

−15 = −15 (Simplify both sides of the equation)

−15 + 15 = −15 + 15 (Add 15 to both sides)

0 = 0


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3 years ago
a stone is thrown downward with an intitial velocity of 29.5 m/sec will travel a distance of a meters, where s(t) = 4.9t^2 + 29.
Alenkinab [10]

Answer:

t = 9 s

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A stone is thrown downward with an intitial velocity of 29.5 m/sec will travel a distance of a meters, where

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2 years ago
Mitch is buying candy bars for his friends. He wants to give 2 bars to each friend, and he wants to have 10 spare. He can afford
Xelga [282]

Hi!


So we know that he has 20 candy bars.

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He wants to give 2 to each friend. So 2 candy bars x friends.

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