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Yakvenalex [24]
2 years ago
10

WILL MARK BRAINLEST, 15 POINTS

Mathematics
2 answers:
tankabanditka [31]2 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]2 years ago
4 0

Answer:

one hour and 12 minutes

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Please answer correctly !!!! Will mark BRAINLIEST !!!!!!!
Reika [66]

Answer:

g(n) = \frac{11+5n}{3}

Step-by-step explanation:

Given

3m - 5n = 11

Rearrange making m the subject

Add 5n to both sides

3m = 11 + 5n ( divide both sides by 3 )

m = \frac{11+5n}{3} , thus

m = g(n) = \frac{11+5n}{3}

4 0
3 years ago
If fence poists are to be placed in a row 7 feet apart, how many posts are needed for 210 feet of fence?
ollegr [7]

Answer:

31

Step-by-step explanation:

210 ft ÷ 7 ft = 30

There are 30 7-ft lengths of fence.

Think of putting a post at the end of each 7-ft length. That means you need 30 posts. Now you must add 1 post for the beginning.

Answer: 31

8 0
2 years ago
A concert hall has three sections: the main floor, the balcony, and the gallery. For a recent concert, 1020 tickets were sold. T
Angelina_Jolie [31]

Answer:

Let the number of balcony seats be b

Let the number of gallery tickets be g

Let the number of main floor tickets be m

b + g + m  = 1020

b = 2g

m = b + 225

The number of balcony tickets = 318

The number of gallery tickets = 159

The number of main floor tickets = 543

Step-by-step explanation:

Let the number of balcony seats be b

Let the number of gallery tickets be g

Let the number of main floor tickets be m

i) Therefore we can write b + g + m  = 1020

ii) there were twice as many balcony tickets sold as gallery tickets

   therefore b = 2g      \Rightarrow  g = 0.5b

iii) there were 225 more main floor tickets than balcony tickets

   therefore m = b + 225

iv) using equation ii) and equation iii) in equation i) we can write

     b + g  + m = b + 0.5b + b + 225  = 1020      \Rightarrow 2.5b  = 795     \Rightarrow  b = 318

v) g  = 0.5 b  = 0.5 \times 318 = 159

vi) m = b + 225 = 318 + 225 = 543

5 0
3 years ago
Read 2 more answers
Which of the x-values are solutions to the following inequality? x<365
vladimir1956 [14]

Answer:

Choice A ; Choice B

Step-by-step explanation:

x < 365

x ∈ ( -oo ; 365 )

Solutions :

  • Choice A

x = 99

  • Choice B

x = 361

7 0
3 years ago
Giving brainlist for the best response <br> (how i want it to be answered example)<br> 1<br> 2<br> 3
AfilCa [17]
1 is akusmite empire
2 is assyrian empire
3 is babylonian empire
4 is city state
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6 is empire
7 is iron age
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11 is tribute
You’re welcome!
6 0
3 years ago
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