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elixir [45]
3 years ago
8

Help plz

Mathematics
2 answers:
sergiy2304 [10]3 years ago
7 0
3(5y-6)-2y=8
15y-18-2y=8
13y-18=8
13y=26
y=2
That is because you have the expression you can substitute it on the system.( hope this helps)
Afina-wow [57]3 years ago
6 0
1. 3(5y-6)-2y=8 b/c x=x so u can just substitute it into the equation u are trying to solve
2. 15y-18-2y=8 now do the parenthesis first
3. 13y-18=8 now combine like terms in this case subtract 15y from 2y
4. 13y=26 add 18 to both sides
5. Y=2 lastly divide both sides by 13 to get the y by it’s self to get y
But if you are also looking for x all u have to do is find the answer to x=5(2)-6 which is 4
-I hope this helped
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What is the angular velocity of a 6–foot pendulum that takes 3 seconds to complete an arc of 14.13 feet? Use 3.14 for π
iren2701 [21]
1) Calculate the whole arc (complete circumference):


Circumference = 2π*radius


radius = 6 foot


=> Circumference = 2 * 3.14 * 6 foot = 37.68


2) Calculate the time to make a whole round, by making a proportion with the two ratios:


 ratio 1 = x / 37.68 =


ratio 2 = 3 / 14.13


ratio 1 = ratio 2 =>

   x                  3s
----------  =   -----------
37.68 ft        14.13 ft


=> x = 3 * 37.68 / 14.13 = 8 s


3) Calcuate the angular velocity as the 2π rad (which is the total angle of a circle) divided by the time.


So the angular velocity is 2π rad / 8 s = 2*3.14 foot / 8 s = 0.785 rad / s



Answer: 0.785 rad / s


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3 years ago
Find a. Write your answer in simplest radical form.
NeTakaya

Answer:

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3 0
2 years ago
Hey guys can you help me with this question please 0.25x + 0.10 = 5.50
vekshin1
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Subtract .10 from both sides to get
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Step-by-step explanation:

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