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OleMash [197]
3 years ago
15

The sum of two numbers is 25 and their differences is 7

Mathematics
1 answer:
Flauer [41]3 years ago
4 0

16 + 9 = 25  \\ 16 - 9 = 7

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Solve for w.
svlad2 [7]

Answer:

w = 0, 5

Step-by-step explanation:

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3 years ago
Two planes left simultaneously from the same airport and headed in the same direction towards another airport 3600 km away. The
ExtremeBDS [4]

Answer:

  • 800 kph
  • 600 kph

Step-by-step explanation:

<u>Equation</u>

Let s represent the speed of the faster plane. Then its travel time is ...

  time = distance/speed = 3600/s

travel time for the slower plane is ...

  time = distance/speed = 3600/(s -200)

The difference in these times is 1.5 hours, so we have ...

  3600/(s -200) -3600/s = 1.5

<u>Solution</u>

Multiplying by (2/3)s(s -200), we get ...

  2400(s) -2400(s -200) = s(s -200)

  s^2 -200s -480000 = 0 . . . . . . . . . . rewrite in standard form

  (s -800)(s +600) = 0 . . . . . . . . . . . . . factor

The positive value of s that makes a factor zero is s = 800.

<u>Conclusion</u>

The speed of the faster plane was 800 km/h; of the slower plane, 600 km/h.

_____

<em>Check</em>

The travel time for the faster plane was 3600/800 = 4.5 hours. For the slower plane, 3600/600 = 6 hours, a difference of 1.5 hours.

6 0
2 years ago
PLZ HELP ME!!!!!
gayaneshka [121]

Answer:

1. (0, 1)


Step-by-step explanation:

Put x = 0 then work out the values of y:0

y = 3^0 = 1  y-intercept is (0,1)

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All the others are done in same way



4 0
3 years ago
The refrigerator part of a refrigerator-freezer has a volume of 27 cubic feet.
scZoUnD [109]

Answer:

324 cubic feet

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
i was supposed to be on a bus, but there was a lady with a chicken on there. what is this, like, guatemala? what the hell? leave
dsp73

lol thats interesting.

4 0
3 years ago
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