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Alja [10]
2 years ago
5

someone solve all of this will give brainliest to first person that does (only answer circled numbers)

Mathematics
1 answer:
erastovalidia [21]2 years ago
6 0
1. 2, 45. 3, 30. 5, 18. 6, 15
2. Got em all nice work!
3. 2, 26. 4, 13
4. It is prime nice.
5. 15
6. 4
7. Has no factors
8. 14
13. 24
14. 42
15. 12
16. 36
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Si un proyectil asciende verticalmente, y después de 3 segundos alcanza su altura máxima, calcule la velocidad que lleva a la mi
lys-0071 [83]

Answer:

The speed is 20.8  m/s

Step-by-step explanation:

If a projectile ascends vertically, and after 3 seconds it reaches its maximum height, calculate the velocity that it carries to the middle of its downward trajectory

Let the maximum height is h and initial velocity is u.

From first equation of motion

v = u + at

0 = u - g x 3

u = 3 g.....(1)

Use third equation of motion

v^2 = u^2 - 2 gh \\\\0 = 9 g^2 - 2 gh \\\\h = 4.5 g

Let the speed at half the height is v'.

v^2 = u^2 + 2 gh \\\\v'^2 = 0 + 2 g\times 2.25 g\\\\v'^2 = 4.5\times 9.8\times9.8\\\\v' = 20.8 m/s

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3 years ago
A stereo system is being installed in a room with a rectangular floor measuring 11 11 feet by 10 10 feet and a a 9 9​-foot ceili
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3 years ago
Lauren is replacing a door that measures 80 inches by 39. What is the distance between opposite corner of the door
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Answer:

Step-by-step explanation:

x² = 80² + 39²

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4 0
2 years ago
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2:3:9......added together = 14

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3 years ago
Find a.b. a=[6,-2,3], b=[2,5, -1]
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Answer:

a.b=[-1]

Step-by-step explanation:

This is a dot product of a and b

a.b =[6,-2,3].[2,5, -1] = [12-10-3] =[-1]

7 0
3 years ago
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