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Basile [38]
3 years ago
7

Mental math explanation

Mathematics
2 answers:
Allushta [10]3 years ago
7 0
Mental math is something that can be done i your head. 

for example you can do 1+1 in your head and you dont need a calculator or paper to do it so i would be called mental math

Hope this helps

remember if you ever need anything and you dont want to waste points you can just post it on my pfp or message me the question

Oduvanchick [21]3 years ago
6 0
Mental math is math that you can easily do in your head. For example, 50+50 is something you can easily do in your head.
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Ralph and Jody go to the store to buy chips and candy bars. Ralph buys 3 bags of potato chips and 4 candy bars for 375 cents. Jo
s2008m [1.1K]
3x+4y = 375
6x+ 4y= 600
-------------------
6x-3x  = 600 - 375

3x=225
x=225:3
x=75 cents

3*x+4y= 375
3*75+4y=375
225 +4y = 375
4y=375-225
4y=150
y=150:4
y=37,5 cents

the price is 75+37,5=112,5 cents for one bag of potato chips and one candy bar

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Step-by-step explanation:

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Step-by-step explanation:

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