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posledela
3 years ago
11

Two cars start from the same place at the same time but travel in opposite directions. One car averages 42 miles per hour and th

e other averages 51 miles per hour. In how many hours will they be 651 miles apart
Mathematics
1 answer:
Andrew [12]3 years ago
7 0
The two cars will be 651 miles apart, when the sum of the distances covered by the two cars is 651 miles.

distance = speed x time.
Let the time covered when they are 651 miles apart be x, then:
42x + 51x = 651
93x = 651
x = 651/93 = 7.

Therefore, the two cars will be 651 miles apart in 7 hours.
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Find the number of primes less than 190 using the principle of inclusion-exclusion.
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The number of primes less than 190 using the principle of inclusion-exclusion are 42

<h3>Principle of inclusion- exclusion</h3>

The principle of inclusion-exclusion is known as a counting technique that computes the number of elements satisfying at least one of several properties and guaranteeing that the numbers are not counted twice.

Prime numbers are numbers only divisible by 1 and itself.

Prime numbers less than 190 are:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181

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2 years ago
What is (-oo,-11) U (5,oo)​
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Can you please please give me more information please thank you
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Answer:

positive

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From the number line

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3 0
3 years ago
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