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Sholpan [36]
3 years ago
10

An airplane flies 80 km in 10 minutes and then flies 100 km in 20 minutes what is the average speed

Mathematics
1 answer:
Eddi Din [679]3 years ago
8 0
The average speed = (speed 1 + speed 2)/2
the average speed = (80/10 + 100/20)/2
the average speed = (8 + 5)/2
the average speed = 13/2
the average speed = 6.5 km/minute
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Svet_ta [14]

Answer:

sqrt(15² + 3²) = sqrt(15² + 3²)

Step-by-step explanation:

Using Pythagoras:

15 blocks North = 15 blocks south (direction opposite to each other)

3 blocks west = 3 blocks east (directions opposite to each other)

Hence distance traveled (d) :

JARON

D = sqrt(15² + 3²)

MARISOL:

D = sqrt(15² + 3²)

Hence ;

sqrt(15² + 3²) = sqrt(15² + 3²)

5 0
3 years ago
Please help number 5 thank you
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Answer    2,290 of total sheets of paper she bought.

Step-by-step explanation:

65x36=2340

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2340-50=2,290

6 0
3 years ago
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Solve for x: 3(x + 1) = −2(x − 1) − 4.
Vlad [161]

Answer:

Multiply the first bracket by 3

Multiply the second bracket by -2

3x+3=-2x+2-4

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Just rearranging

5x+3=-2

5x+3-3=-2-3

5x=-5

Dividing by 5

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Check answer by using substitution method

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0=4-4

0=0

Answer is x=-1

6 0
3 years ago
Seventeen added to a number is sixty-five. What is the number?
SSSSS [86.1K]

Answer:

problem: 17+x=65

answer: 48

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puteri [66]

Answer:

20.46 pounds

Step-by-step explanation:

  1. Since 16.5% of their body is fat you need to multiply the weight by that percentage
  2. you can do this by multiplying 124 by .165 which equals 20.46 pounds
7 0
3 years ago
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