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MatroZZZ [7]
3 years ago
10

PLEASE SOVEL THIS I WILL GIVE OUT 20 POINT

Mathematics
1 answer:
Anettt [7]3 years ago
5 0

9514 1404 393

Answer:

  21.25 seconds

Step-by-step explanation:

In miles per second, the speed of the jet is ...

  (720 mi/h)/(3600 s/h) = 1/5 mi/s

The speed of the sound is the same:

  (1 mi)/(5 s) = 1/5 mi/s

Then the rate of closure between the airplane and the sound is ...

  (1/5 mi/s) +(1/5 mi/s) = 2/5 mi/s

To find the time required to close a gap of 8 1/2 miles, we can use the relation ...

  time = distance/speed

  time = (8.5 mi)/(0.4 mi/s) = 21.25 s

The pilot will hear the thunder 21.25 seconds after the flash.

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Which relationships describe the angle pair x° and 157º?
kompoz [17]

Step-by-step explanation:

supplementary angles.

6 0
4 years ago
Graph y = 4x-9 please
stiks02 [169]

Answer:

(0, -9) (1, -5)

Step-by-step explanation:

We know from the equation y = 4x -9, that the slope of the line is 4, and the point that the line crosses the y-intercept is at -9. So, your first point would be at (0, -9) and if you go one value over on the x-coordinate, that means the y-coordinate will go 4 up. So your final point will be (1, -5). The point could also be (2, -1), (3, 3), (4, 7), (5, 11), etc.

I Hope That This Helps! :)

7 0
3 years ago
Read 2 more answers
Which equation is represented by the table?
Fantom [35]
The answer is C.

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y = x + 3

3 = 0 + 3

3 = 3

(1, 4)

y = x + 3

4 = 1 + 3

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(2, 5)

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6 0
3 years ago
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The exterior angle of a triangle is 119° and its interior opposite angle are in the ratio 8:9. Find the angle of a triangle
erastovalidia [21]

Answer:

see explanation

Step-by-step explanation:

the ratio of the opposite interior angles = 8 : 9 = 8x : 9x

The exterior angle of a triangle = sum of the opposite interior angles, hence

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x = 7

8 parts = 8x = 8 × 7 = 56

9 parts = 9x = 9 × 7 = 63

The sum of the 3 angles in a triangle = 180°

subtract the sum of the 2 angles from 180 for third angle in triangle

180° - (56 + 63)° = 180° - 119° = 61°

The 3 angles of the triangle are 56°, 61°, 63°


8 0
3 years ago
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Step-by-step explanation:

8 0
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