Yes, yes you did my child good job
Answer:
Step-by-step explanation:
Notice that H is a set with 106 - 81 = 25 elements.
Hence H has 
subsets.
In order to get the proper subsets of H we just need to deduct one from
So there are 
proper subsets.
Answer: shorter: 24 longer: 41
Step-by-step explanation: we need to write an equation. x+(2x-7)=65. We don’t need the parentheses, but I put them so it would make it a bit more clear. Simplify: 3x-7=65. Add 7 to both sides: 3x=72. Divide by three: 72/3=24 Now we know the shorter piece is 24. 24x2-7=48-7=41. We know these are correct because 24+41=65
Answer:
7x -2y
Step-by-step explanation:
5x−4y+2(y+x)
Distribute
5x -4y +2y +2x
Combine like terms
5x +2x -4y +2y
7x -2y
Answer:
17x² + 2x – 3
Step-by-step explanation:
(9x2 + 3x – 5) + (8x2 – x + 2) →
(9x² + 3x – 5) + (8x² – x + 2) →
[Group like terms]
(9x² + 8x²) + (3x – x) + (2 – 5) →
[Simplify]
17x² + 2x – 3
