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Len [333]
3 years ago
14

Indicate whether or not each system of equation is constant and constant or dependent

Mathematics
1 answer:
zheka24 [161]3 years ago
8 0
If a system has at least one solution, it is said to be consistent .

If a consistent system has an infinite number of solutions, it is dependent 

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John can mow a lawn in 80 minutes. Rocky can mow the same lawn in 120 minutes. How long does it take for both John and Rocky to
mario62 [17]

Answer: it will take them 48 minutes.

Step-by-step explanation:

John can mow a lawn in 80 minutes. This means that the rate at which he moans the lawn per minute is 1/80

Rocky can mow the same lawn in 120 minutes. This means that the rate at which Rocky can mow the same lawn per minute is 1/120

If they work together, they would work simultaneously and their individual rates are additive. This means that their combined working rate would be

1/80 + 1/120 = 200/9600 = 1/48

Assuming it takes t hours for both of them to clean the room working together, the working rate per hour would be 1/t. Therefore,

1/48 = 1/t

t = 48 minutes

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He solution is n = –2 verified as a solution to the equation 1.4n + 2 = 2n + 3.2. What is the last line of the justification?
Nimfa-mama [501]

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Step-by-step explanation:

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Since the value of n satisfies our equation, therefore, last line of the justification will be -0.8=-0.8.

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