Answer:
7/8>3/8>1/4
Step-by-step explanation:
because 7/8=0.875
3/8=0.375
1/4=0.25
Answer: 104
Step-by-step explanation: u tell me.
Answer:
![15a^2b^2-20a^2b+6ab^2-4ab+7](https://tex.z-dn.net/?f=15a%5E2b%5E2-20a%5E2b%2B6ab%5E2-4ab%2B7)
Step-by-step explanation:
The sum of two polynomials is
![10a^2b^2-8a^2b+6ab^2-4ab+2](https://tex.z-dn.net/?f=10a%5E2b%5E2-8a%5E2b%2B6ab%5E2-4ab%2B2)
First addend is
![-5a^2b^2+12a^2b-5](https://tex.z-dn.net/?f=-5a%5E2b%5E2%2B12a%5E2b-5)
Second addend x.
Hence,
![x+(-5a^2b^2+12a^2b-5)=10a^2b^2-8a^2b+6ab^2-4ab+2\\ \\x=10a^2b^2-8a^2b+6ab^2-4ab+2-(-5a^2b^2+12a^2b-5)=\\ \\=10a^2b^2-8a^2b+6ab^2-4ab+2+5a^2b^2-12a^2b+5=\\ \\=(10a^2b^2+5a^2b^2)+(-8a^2b-12a^2b)+6ab^2-4ab+(2+5)=\\ \\=15a^2b^2-20a^2b+6ab^2-4ab+7](https://tex.z-dn.net/?f=x%2B%28-5a%5E2b%5E2%2B12a%5E2b-5%29%3D10a%5E2b%5E2-8a%5E2b%2B6ab%5E2-4ab%2B2%5C%5C%20%5C%5Cx%3D10a%5E2b%5E2-8a%5E2b%2B6ab%5E2-4ab%2B2-%28-5a%5E2b%5E2%2B12a%5E2b-5%29%3D%5C%5C%20%5C%5C%3D10a%5E2b%5E2-8a%5E2b%2B6ab%5E2-4ab%2B2%2B5a%5E2b%5E2-12a%5E2b%2B5%3D%5C%5C%20%5C%5C%3D%2810a%5E2b%5E2%2B5a%5E2b%5E2%29%2B%28-8a%5E2b-12a%5E2b%29%2B6ab%5E2-4ab%2B%282%2B5%29%3D%5C%5C%20%5C%5C%3D15a%5E2b%5E2-20a%5E2b%2B6ab%5E2-4ab%2B7)
Answer:
What was the first thing ever invented?
Date Invention or discovery
Prehistory
3500– 5000 BCE Glass is made by people for the first time