Answer and Step-by-step explanation:

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Answer: it doesnt need an explanation, it just does.
Step-by-step explanation: im not stoopid
Answer:
0.75 cookie
0.55 drink
Step-by-step explanation:
0.75+0.75=1.50
1.50+0.55=2.05
0.55+0.55=1.10
1.10+0.75=1.85
Hope this helps!
Answer:
22.5
Step-by-step explanation:
0.80x=10 divide each side by 0.80
x=12.5 ml-----------------amount of pure acid needed
CK
12.5+10=0.20(100+12.5)=0.20(112.5)
22.5=22.5
Hope this helps
Answer: 3y/x
Step-by-step explanation:
45xy / 15x^2
divide through by 15
3xy / x^2
also, divide the numerator and denominator by x
3y/ x