<span>1 hundreds + 5 tens + 12 ones
= 100 + 50 + 12
= 162</span>
identity used is
x³ + y³+ z³– 3xyz = (x + y + z) (x² + y² + z² – xy – yz – zx).
then use
(x+y+z)² = x²+y²+z²+2(xy+yz+xz)
225= 83 + 2(xy+yz+xz)
xy+yz+xz = (225-83)/2
xy+yz+xz= 142/2
xy+yz+xz= 71
ok
now use identity
x³ + y³+ z³– 3xyz = (x + y + z) (x² + y² + z² – xy – yz – zx).
now
x³ + y³+ z³– 3xyz = 15 (83 – xy – yz – zx).
= 15[83 - (71)]
= 15×12
=180
Answer:
-1 < 0
Step-by-step explanation:
0 is nothing and -1 is less than nothing
The top one is x-intercept, and the bottem one is y-intercept. Also the gray boxes are your answer
Answer:
172 m^2.
So you already have it on the correct answer.
Step-by-step explanation:
For you to find the surface area, you need to find out the areas of all the different colored sections.
There are 6 sections.
2 green, 2 purple, and 2 red.
Green section: (length x width) 7 x 8 = 56
Purple section: (length x width) 2 x 8 = 16
Red section: ( length x width) 7 x 2 = 14
Total: 56 + 16 +56 + 16 + 14 + 14 = 172 cm².
Feel free to let me know if you need more help. :)
