Answer:
5
Step-by-step explanation:
Given: 5^3– 10^2 = X(8 – 2) + 2X – 3X
Solving the equation to find the value of x.
⇒ ![5^{3} -10^{2} = x(8-2)+2x-3x](https://tex.z-dn.net/?f=5%5E%7B3%7D%20-10%5E%7B2%7D%20%3D%20x%288-2%29%2B2x-3x)
Using the distributive property of multiplication, multiplying x with 8 and -2
⇒![125-100= 8x-2x+2x-3x](https://tex.z-dn.net/?f=125-100%3D%208x-2x%2B2x-3x)
cancelling out -2x and 2x
⇒ ![25= 8x-3x](https://tex.z-dn.net/?f=25%3D%208x-3x)
⇒ ![25= 5x](https://tex.z-dn.net/?f=25%3D%205x)
Multiplying both side by 5
⇒ x= ![\frac{25}{5}](https://tex.z-dn.net/?f=%5Cfrac%7B25%7D%7B5%7D)
∴ x= 5
Hence, the value of unknown is 5.
511/8-243/4
511/8-486/8=25/8
959.4/6=159.9
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D = 2r => 12.6 = 2*r => r=6.3
A = π*r^2 = (3.14) * (6.3)^2 = (3.14)*(39.69) = 124.6266 which is approximately 124.63
Hope this helps!
Answer:
16 pages
Step-by-step explanation:
1 hour= 2 pages written of notes
so 8 hours of notes = 8x2=16 pages