In order to write this quadratic equation in standard form, first note that standard form is ax^2+bx+c for quadratics, where c is the numerical value (constant), B is the coefficient of x, and a is the coefficient of x^2 and is the leading coefficient. Next, multiply the binomials of (x-7) and (x-1). You can do this by using FOIL, or by distributing each of the terms in a binomial to each of the other terms in the other binomial. (Please let me know if you need a walk through in this step in particular). Furthermore, you should then write y= (the simplified trinomial). Now, the quadratic is in standard form. To reiterate, just simplify the two binomials by multiplying them together and writing that they're equal to y.
Do quick math. ..........
Ok so keep in mind, we are solving for x or z. We want to get it by itself.
So, with 6x= 5x+22, we need to subtract 5x from both sides of the = sign
So 6x - 5x = 1x.
Our new equation looks like 1x= 22
We still don't have x alone so we need to divide one on both sides of the =
Our new and final answer is x=22
No problem!
Okay you must set and equation.
$40 × ? = 10
I used multiplication because when things are discounted, they are multiplied by decimals
? =
is equal to
1/4 is 25%
The item needs to be marked down 25% to buy and get a discount of $10
The slope is 4/3. just use the formula.
