This week in Precalc we learned how to plot the vertex using an expression. I found it is easier to solve this using a graph. substitute X for numbers between -3 to 3 then solve for Y and fill in the graph. as you can see on the graph and parabola the plot (2,-3) is the lowest point of the graph making it the vertex
This week we learned how to factor using the quadratic formula
To solve this it’s easiest to determine was terms are A,B, and C. Once these variables are determined substitute these variables for the numbers from the equation. Use bedmas to solve for X.
This week we learned how to trinomials
The first step in this example is to multiply the first and third term. Next is to factor the product, between the numbers choose the factors that add up to equal the second term in this case: 2+9=11. Next replace 11x with 2x + 9x and separate the 4 terms into groups of 2 as shown in the example. Next find greatest factor and divide the terms as shown. Divide and place the factors outside of the brackets. Place the numbers in a new bracket and multiply the quotient by the factors 2x+3. Lastly check your work.
He’s chubby, almost blind, has asthma, and yeah at first he was a tad annoying but what BEST friends aren’t?
1. He never hogs the spotlight
When it comes to having a best friend you always want people to know you’re best friends, I mean what’s worse than someone calling your best friend their best friend right. But do you really want your friend to out shine you? Don’t worry about it, if you love attention Piggy here wouldn’t dare! He’ll stand by you without stealing the show, I mean he’ll do anything to avoid the fat jokes, or how about that cute girl in your math class who just became single? We all know he’s not much to look at.
2. He gives the best advice
Everyone loves a blanket fresh out of the dryer or a warm cup of hot chocolate during winter but you know what’s more comforting than both of those? The warm hug that is… friendly advice! Piggy to Ralph is like Remy to Lou from “Ratatouille”, always behind the scene but also kind of pulling the strings (in a friendly way). Piggy’s the type of guy to give you rational advice but also understands the fun sides of things. For example, someone’s giving you a hard time? Piggy will tell you to stay calm but also how could get back at them.
This week we learned how to divide radicals. I struggled with this because of a new concept we learned called “Rationalizing the denominator”, which in a sense is really just multiplying the whole fraction by its denominator. By doing so, we’re getting rid of the square root on the denominator which in this equations case is 7.
A tip I find helpful when doing these type of equations is simplifying each radical before multiplying or dividing. For example gets converted to . After this step multiplying become much simpler in my opinion.
This week in precalc I learned that when doing absolute values if a negative number is within braces it really means its a positive absolute value. We know this because it all depends on the numbers distance from 0.
For example:| -10|
so as shown because -10 is 10 spots from 0 the absolute value is 10
This week I learned how to find n in a Geometric sequence!
= 10+(49)10 = 500
= (2(10)+(50-1)10) = 12750