Answer:
See below
Step-by-step explanation:
I'll provide an example to help you. Let's say we were solving and we wanted to factor the quadratic on the left side. We can't do that because the factors of -7 don't add up to 5. So we'd have to use the quadratic formula. The quadratic formula is essentially the last resort that will solve all quadratic equations, so it could be seen as a preferred method. But, unless you can factor the quadratic, it's much easier to solve.
Now let's do another one. for example can be written as and we can easily get and as solutions since plugging them into the factors would produce 0 (from the Zero Product Property). If we used the quadratic formula, it would take more time to plug in the variables and solve when we can just simply factor.
Hopefully, this explanation helps you to think of your discussion post!
Answer:
f=6 and s=18
Step-by-step explanation:
Let's solve your system by substitution.
s+f=24;s=3f
Rewrite equations:
s=3f;f+s=24
Step: Solves=3ffor s:
s=3f
Step: Substitute3fforsinf+s=24:
f+s=24
f+3f=24
4f=24(Simplify both sides of the equation)
4f
4
=
24
4
(Divide both sides by 4)
f=6
Step: Substitute6forfins=3f:
s=3f
s=(3)(6)
s=18(Simplify both sides of the equation)
Answer:
f=6 and s=18
It is 5, I hope this answers your question
<h3>
Answer: Choice C</h3>
Notice how z + 0.13z = 1z + 0.13z = (1+0.13)z = 1.13z
The 0.13z represents the increase of 13%
There are 380 students at Rock-Ledge Middle School.
To figure it out, you have to start by figuring out the total amount of students in band. If 38 = 25% then 38 x 3 = 75% so 114 = 75%. That means there are 152 students in band. That means 40% of the students are in band. Because 20s are easier to work with, you can transfer the 40% to 20% which equals 76. If 76 = 20% then 76 x 4 = 100% so the total number of students is 380!
If you need more help, just comment what you don't get.