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Mkey [24]
2 years ago
7

Estimate the sum or difference 8/9 +4/7=

Mathematics
1 answer:
zhenek [66]2 years ago
7 0

Answer:

1 29/63

Step-by-step explanation:

To add fractions, find the LCD and then combine.

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7×1000 equals wut Help me​
Aleonysh [2.5K]

Answer:

7000

Step-by-step explanation:

Hope this helps! :)

7 0
3 years ago
Read 2 more answers
A Ferris Wheel 22.0m in diameter rotates once every 12.5s. What is the ratio of a persons apperenet weight to her real weight (a
AnnZ [28]
  <span>Acceleration of a passenger is centripetal acceleration, since the Ferris wheel is assumed at uniform speed: 
a = omega^2*r 

omega and r in terms of given data: 
omega = 2*Pi/T 
r = d/2 

Thus: 
a = 2*Pi^2*d/T^2 

What forces cause this acceleration for the passenger, at either top or bottom? 

At top (acceleration is downward): 
Weight (m*g): downward 
Normal force (Ntop): upward 

Thus Newton's 2nd law reads: 
m*g - Ntop = m*a 

At top (acceleration is upward): 
Weight (m*g): downward 
Normal force (Nbottom): upward 

Thus Newton's 2nd law reads: 
Nbottom - m*g = m*a 

Solve for normal forces in both cases. Normal force is apparent weight, the weight that the passenger thinks is her weight when measuring by any method in the gondola reference frame: 
Ntop = m*(g - a) 
Nbottom = m*(g + a) 


Substitute a: 
Ntop = m*(g - 2*Pi^2*d/T^2) 
Nbottom = m*(g + 2*Pi^2*d/T^2) 

We are interested in the ratio of weight (gondola reference frame weight to weight when on the ground): 
Ntop/(m*g) = m*(g - 2*Pi^2*d/T^2)/(m*g) 
Nbottom/(m*g) = m*(g + 2*Pi^2*d/T^2)/(m*g) 

Simplify: 
Ntop/(m*g) = 1 - 2*Pi^2*d/(g*T^2) 
Nbottom/(m*g) = 1 + 2*Pi^2*d/(g*T^2) 

Data: 
d:=22 m; T:=12.5 sec; g:=9.8 N/kg; 

Results: 
Ntop/(m*g) = 71.64%...she feels "light" 
Nbottom/(m*g) = 128.4%...she feels "heavy"</span>
7 0
3 years ago
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What is the solution to the equation 5 (x minus 6) = 2 (x + 3)?
Reika [66]
The answer is x=12 :))
8 0
3 years ago
Factor each expression.<br><br> Problem: 2p^3 + 6p^2 + 3p + 9<br> Answer: (p + 3) (2p2 + 3)
oee [108]
Factor by grouping
2p^3 + 6p^2 + 3p + 9
2 p^3+6 p^2+3 p+9=\left(2 p^3+6 p^2\right)+(3 p+9)=\left(2 p^2\right) (p+3)+3 (p+3)
2 p^2 (p+3)+3 (p+3)
(p+3) \left(2 p^2+3\right)
4 0
3 years ago
Select the correct answer from each drop down menu. Consider the given table.
svet-max [94.6K]

Answer:

the new year will also......so the equation of a new 6 month period will not have to go on coronavirus or the equation is 4 year old but it was a very difficult task for me and my students and the other side of it to do it and I was the first to do it in your own way to get a better job in your life will I am a good thing to be a teacher in a good thing and the other side of it you will have the opportunity to be the best in your career in the world and in your life will you have been

5 0
3 years ago
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