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adell [148]
3 years ago
14

-5/8 multiplied by 7/1

Mathematics
2 answers:
astraxan [27]3 years ago
6 0

Answer:

-4.375

Step-by-step explanation:

Marizza181 [45]3 years ago
3 0
-4.375....................
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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
3 years ago
Avannah drove 716 miles on Monday. She drove another 572 miles on Tuesday. About how many miles did she drive altogether?
PilotLPTM [1.2K]

Answer:

Step-by-step explanation:

1,288 =1,300?

4 0
2 years ago
Read 2 more answers
The range of the following relation R {(3, −2), (1, 2), (−1, −4), (−1, 2)}
Oxana [17]
I think the rang numbers are -2 , 2 , -4 , and 2. i hope that correct.
8 0
3 years ago
The square ABCD is divided into eight equal parts. The shaded area is 25 cm². What is the area of the square ABCD​
Akimi4 [234]

Answer:

I think the answer is 200cm^2

Step-by-step explanation:

since the square is divided into eight equal parts

and one shaded part is =25cm^2

multiply the area of the shaded part by the number of equal parts

= 25cm^2 ×8

= 200cm^2

6 0
3 years ago
Can anyone help me with the last one number 5 please
yKpoI14uk [10]

Answer:

Step-by-step explanation:

You have to substitute the in for the in meaning the x=2 so it would b no solution

8 0
3 years ago
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