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Semmy [17]
3 years ago
7

Brainliest to correct!

Mathematics
1 answer:
OLEGan [10]3 years ago
6 0

Answer:

A) (-infinity, -7]U[-2, -1]

B) [-7, -5]

C) [-5, -2]U[-1, infinity)

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How to do this question plz answer ​
ANEK [815]

9514 1404 393

Answer:

  more than half are being used

Step-by-step explanation:

Perhaps easiest to understand is the most straightforward: figure the total number of seats and the number of seats being used. Check to see if that is more than half.

The 1 first-class carriage has usage of ...

  (3/8)(64 seats) = 24 seats.

The 6 standard carriages have usage of ...

  (7/13)(6 · 78 seats) = 252 seats.

The total number of seats used is ...

  24 + 252 = 276 . . . . seats used

__

The total number of seats on the train is ...

  1·64 +6·78 = 532 . . . . seats on the train

Half of the seats on the train will be ...

  532/2 = 266 seats . . . . half the seats

The 276 used seats are more than half of the total number. More than half the seats are being used.

_____

<em>Alternate solution</em>

Another way to look at this is to compare utilization to 1/2 in each carriage class.

  In first class 1/2 -3/8 = 1/8 of 64 seats = 8 seats fewer than 1/2 the seats are being used.

  In standard class, 7/13 -1/2 = 14/26 -13/26 = 1/26 of 78 seats = 3 seats more than 1/2 the seats are being used. There are 6 standard class carriages, so 6·3 = 18 more than half the seats in the standard-class carriages are being used.

This number is 10 more than the 8 under-utilized seats in first class, so <em>more than half the train seats are being used</em>.

8 0
2 years ago
(3x - 2)<br> (10x - 11)<br> (3x + 1)<br> Find the value of X
FrozenT [24]
The value of x is the meaning of the word of the value of x=14
8 0
2 years ago
(this is 6 grade math) PLEASE HELP<br>​
pochemuha
Answer
11a + 4a= 15a
3x + 6 +7x -4 = 12x
-12m -3 + 4m + 16 = 29m
6k-4+k-2 =4K
3+13-5p-2p =9p

I think these are the answers please don’t get mad if they are not hope I help :)
8 0
3 years ago
Read 2 more answers
A tota of 17,100 seats are available for the next hockey game if 62% of the tickets are sold out how many seats are in the arena
Ainat [17]
Take 17100 divide by 100 the answer you get is the number of seats for 1% so to get 62%, multiply 17100/100 X 62 <span>the answer is certainly 45,000</span>
5 0
3 years ago
Read 2 more answers
What is 2 times 5+3 times 2+4
Dafna1 [17]

Answer:

96

Step-by-step explanation:

3 0
3 years ago
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