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Yakvenalex [24]
3 years ago
10

WILL MARK BRAINLEST, 15 POINTS

Mathematics
2 answers:
tankabanditka [31]3 years ago
7 0

Answer:

1  hour and 12 minutes

Step-by-step explanation:

Let's say x = time it takes for the trains to be 204 miles apart.

Speed = Distance/Time,

Time = Distance/Speed,

x = 204/ (80 + 90) = 204/170 = 1 and 1/5 hours or 1  hour and 12 minutes

fgiga [73]3 years ago
4 0

Answer:

one hour and 12 minutes

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Mr. Chin went to a store where he spent one-half of his money and then $14 more. He then went to another store where he spent on
ElenaW [278]

Answer:

Before going to the first store he had $ 112.

Step-by-step explanation:

Before going to the first store Mr. Chin had all his money, which we will call by "x". After the first store he had:

y = x/2 - 14

He then went to a second store and he spent all his money in a way that:

y/3 - 14 = 0

Because after that store he had no money left. So we can use the second equation to solve for y and then use that value to solve for x, that is the  amount of money he had before going to the first store. We have:

y/3 = 14

y = 14*3 = 42

From the first equation:

42 = x/2 - 14

x/2 - 14 = 42

x/2 = 42 + 14

x/2 = 56

x = 112

Before going to the first store he had $ 112.

6 0
3 years ago
Is 1.88 rational or is it irrational
Anna11 [10]

Answer:

1.88 is a irrational number

3 0
4 years ago
2.4(3x+2)+0.3(x+4)=6.6
Lunna [17]
X = 0.08

i got it right
8 0
3 years ago
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There are 4 teams in a soccer tournament. Each team plays each of the other teams exactly once. In each match, the winner receiv
Liula [17]

Answer:

8 points

Step-by-step explanation:

Given that there are 4 teams and Each team plays each of the other teams exactly once, then each team plays 3 matches. The possible points after 3 matches are:

0: 3 lost

1: 2 lost, 1 tied

2: 2 tied, 1 lost

3: 3 tied

4: 1 won, 1 lost, 1 tied

5: 1 won, 2 tied

6: 2 won, 1 lost

7: 2 won, 1 tied

9: 3 won

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20/12 improper fraction
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The answer is, 0.6. To get that answer you have to divide 20 and 12. 20 is dividend, and 12 is tge divisor.
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