Systems of equations word problems example 3 | Algebra I | Khan Academy

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Algebra I on Khan Academy: Algebra is the language through which we describe patterns. Think of it as a shorthand, of sorts. As opposed to having to do something over and over again, algebra gives you a simple way to express that repetitive process. It's also seen as a "gatekeeper" subject. Once you achieve an understanding of algebra, the higher-level math subjects become accessible to you. Without it, it's impossible to move forward. It's used by people with lots of different jobs, like carpentry, engineering, and fashion design. In these tutorials, we'll cover a lot of ground. Some of the topics include linear equations, linear inequalities, linear functions, systems of equations, factoring expressions, quadratic expressions, exponents, functions, and ratios.

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[avernales]

thanks for doing this, i could never really understand it when my teacher tried to teach it to me.

[EasyXD]

As far as I know, on the SAT, they can mention nickels and quarters but they can't expect you to know their values. For example, on the April 2017 SAT, there was a math question that asked you to find the probability of a nickel and a quarter landing heads-up or tails-up when flipped. You don't need to know the value for that or anything, just do the probability question. Alternatively, the question could tell you that a nickel is worth 5 cents in the question itself. On the real SAT, you shouldn't have to know the monetary values of any of the coins.
That being said, here is a list:
penny = 1 cent coin
nickel = 5 cent coin
dime = 10 cent coin
quarter = 25 cent coin
half-dollar = 50 cent coin
dollar = 1 dollar (100 cents)

[avirbd]

Maybe don't use nickle and quarter when possible, I have no idea what those represent...

[JahanzaibShinwari]

I do not understand please explain me the 0.05 and 0.25?

[javaluo]

em i don`t know what it means~
almost all the Middle School students can work it out~in seconds~

is it a tutorial to Middle School students?

[mabeklvista]

I keep hearing nipples, so sorry for that, but it helped ! thank you so much

[sweetberries]

it confused me a bit because I didn't know what nickel was

[javaluo]

em
i am sorry for the last subscribe
Because i know it now ~