To be able to do the problem 5(10 + 4) mentally, Zack does 50 + 20 instead of 5(14).
2 answers:
Answer: The distributive property.
5(10+4)
=5*10+5*4
=50+20
=70
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2. = 16
3. = x + 10y
4. sry, I don't know this one :(
5. = 14
Hope this helps!!!
Answer:
1296
Step-by-step explanation:
6^2*6^2=6^4. So 36*36=1296
2r-6+5r=3-r+7
7r-6=10-r
7r+r=10+6
8r=16
r=16/8
r=2
