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tangare [24]
3 years ago
8

The double number line shows the amount of time a hen needs to lay 1 egg.

Mathematics
1 answer:
DaniilM [7]3 years ago
3 0

Answer:

3

Step-by-step explanation:

2+1=3

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The position of a 2 kg object is given as x(t) = Bt2 +5, where x is in meters and t is in seconds. (a) Determine the force F res
Nastasia [14]

(a) Given the position function

x(t) = (B m/s²) t² + 5 m

it's clear that the object accelerates at B m/s² (differentiate x(t) twice with respect to t), so that the force exerted on the object is

F(t) = (2 kg) (B m/s²) = 2B N

(b) Recall the work-energy theorem: the total work performed on an object is equal to the change in the object's kinetic energy. The object is displaced by

∆x = x(5 s) - x(0 s)

∆x = ((B m/s²) (5 s)² + 5 m) - ((B m/s²) (0 s)² + 5 m)

∆x = 25B m

Then the work W performed by F (provided there are no other forces acting in the direction of the object's motion) is

W = (2B N) (25B m) = 50B² J = 200 J

Solve for B :

50B² = 200

B² = 4

B = ± √4 = ± 2

Since the change in kinetic energy and hence work performed by F is positive, the sign of B must also be positive, so B = 2 and the object accelerates at 2 m/s².

(c) We found in part (b) that the object is displaced 25B m, and with B = 2 that comes out to ∆x = 50 m.

7 0
3 years ago
What is the answer to 3/4-3/8
Mashcka [7]
Convert 3/4 into a fraction in the form of x/8 to subtract 3/8 from it. Multiply the entire fraction by 2/2, which gives you 6/8. Subtract 3/8 from it, and you get 3/8. Your answer is 3/8.
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3 years ago
Identify the methods<br> PLEASE HELP!!
klemol [59]

Answer:

Letter A and B are the answers

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yarga [219]
The unit cost is 3.67 pert shirt
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2 years ago
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EastWind [94]

Answer: yes

Step-by-step explanation: If you think about it like money would you rahter have $0.4 or $0.04 to change it into to decimal form you just do 2 divided by 5 hope this helped :)

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3 years ago
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