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strojnjashka [21]
3 years ago
5

What is 60 -1 1/2 (8) 2 equal

Mathematics
1 answer:
sleet_krkn [62]3 years ago
5 0

Answer:

Step-by-step explanation:

60 -1 1/2 (8) 2

= 60 - 3/2 (8)(2)

= 60 - 3(8)

= 60 - 24

= 36

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An aquarium 2 m long, 1 m wide, and 1 m deep is full of water. Find the work (in J) needed to pump half of the water out of the
Nitella [24]

Answer:

W=2452.5 J

Step-by-step explanation:

The work is define as the integral of the force times distance. So we have:

W=\int^{a}_{b}Fxdx

Now, we can write the force in terms of density.

F=m*g=\rho Vg

V is the volume (V=2*1*1=2 m³)

So the work will be:

W=\int^{0.5}_{0} 2*1000*9.81*xdx=\int^{0.5}_{0} 2*1000*9.81*xdx=\int^{0.5}_{0}19620xdx=19620(\frac{x^{2}}{2})|^{0.5}_{0}

The limit of integration is between 0 and 0.5 because we want to pump half of the water out of the aquarium.

W=19620(\frac{x^{2}}{2})|^{0.5}_{0}=19620(\frac{0.5^{2}}{2})

W=2452.5 J

I hope it helps you!

8 0
3 years ago
Complete the equation for this model.
Arturiano [62]

Answer:

(-18) + (-2) = -20

Step-by-step explanation:

arrow is moving from -18 to -20.

3 0
1 year ago
What is 201 divided by 7?
anzhelika [568]
201÷7= 28.71
The answer is 28.71
5 0
2 years ago
Linda walked 1/6 mi to the park and then another 4/9 mi to the cafe. How far did she walk in total?
Musya8 [376]

Answer:

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5 0
3 years ago
Read 2 more answers
Evaluate the expression:<br> 3(a + b - 3) - 212a + b - 4) when a = 2 and b = 1
olga_2 [115]

Answer:

417

Step-by-step explanation:

3(2+1-3)-212*2+1-4=?

3-212*2+1-4=?

3-423+1-4=?

420+1-4=?

421-4=?

417

3 0
3 years ago
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