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VladimirAG [237]
3 years ago
13

Two cars are 50 miles apart and driving towards each other. One car is driving at a speed of 30 miles per hour and the other car

is driving at a speed of 45 miles per hour. How long does it take for the cars to pass each other
Mathematics
1 answer:
ale4655 [162]3 years ago
3 0

Answer:

40 minutes

Step-by-step explanation:

30x+45x=50

75x=50

x=.6667 hours or 40 minutes

check:

30 mph for 40 minutes=20 miles

45 mph for 40 minutes=30 miles

total=50 miles

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Answer:

-\sqrt{5}

Step-by-step explanation:

A root with square root or under root is only obtained when we take the square root of both sides. Remember that when we take a square root, there are two possible answers:

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For example, for the equation:

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If we take the square root of both sides, the answers will be:

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Only getting one solution with square root is not possible. Solutions with square root always occur in pairs.

For given case, the roots are 6 and \sqrt{5}. Therefore, the 3rd root of the polynomial function f(x) had to be -\sqrt{5}

It seems you made error while writing option B, it should be - square root of 5.

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Maths problem
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Step-by-step explanation:

Length: 3w-4

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