Has to be c. I don't know why you got it wrong but your teachers says 3, I say 3, but she marked it wrong and circled it. you need to talk to your teacher about it because everything else increases.
Answer:
x=5
Step-by-step explanation:
6x+12x=90
18x=90
x=90/18
x=5
The square has sides of length s.
The rectange has 2 sides of s - 6 and 2 sides of s + 1
Perimeter is all the sides added up.
(s - 6) + (s - 6) + (s + 1) + (s + 1)
4s - 10
The answer is D. 4s - 10
Okay, here we have this:
Considering the provided polynomial, we are going to rewrite it in standard form, so we obtain the following:
So let's remember that a polynomial is in standard form when its terms are written from highest to lowest degree, so in this case when rearranging we have:
-3x+8x²-11x +9x³
=+9x³+8x²-11x-3x
The previous polynomial corresponds to the given polynomial rewritten in standard form.
EXPLANATION:
Given;
We are given that in a class there are the following groups of students;
Required;
We are required to calculate the probability that a student selected at random will have Green eyes OR Blue eyes.
Step-by-step solution;
To calculate the probability of an event, we shall use the following formula;
![P[Event]=\frac{Number\text{ }of\text{ }required\text{ }outcomes}{Number\text{ }of\text{ }all\text{ }possible\text{ }outcomes}](https://tex.z-dn.net/?f=P%5BEvent%5D%3D%5Cfrac%7BNumber%5Ctext%7B%20%7Dof%5Ctext%7B%20%7Drequired%5Ctext%7B%20%7Doutcomes%7D%7BNumber%5Ctext%7B%20%7Dof%5Ctext%7B%20%7Dall%5Ctext%7B%20%7Dpossible%5Ctext%7B%20%7Doutcomes%7D)
To calculate the probability that a selected student will have green eyes;
![P[green]=\frac{6}{20}=\frac{3}{10}](https://tex.z-dn.net/?f=P%5Bgreen%5D%3D%5Cfrac%7B6%7D%7B20%7D%3D%5Cfrac%7B3%7D%7B10%7D)
To calculate the probability that a selected student will have blue eyes;
![P[blue]=\frac{5}{20}=\frac{1}{4}](https://tex.z-dn.net/?f=P%5Bblue%5D%3D%5Cfrac%7B5%7D%7B20%7D%3D%5Cfrac%7B1%7D%7B4%7D)
The probability of event A or event B will be the addition of probabilities.
Therefore, the probability that a randomly selected student will have green or blue eyes will be;
![P[G]+P[B]=\frac{3}{10}+\frac{1}{4}](https://tex.z-dn.net/?f=P%5BG%5D%2BP%5BB%5D%3D%5Cfrac%7B3%7D%7B10%7D%2B%5Cfrac%7B1%7D%7B4%7D)
![P[F]+P[B]=\frac{6}{20}+\frac{5}{20}=\frac{11}{20}](https://tex.z-dn.net/?f=P%5BF%5D%2BP%5BB%5D%3D%5Cfrac%7B6%7D%7B20%7D%2B%5Cfrac%7B5%7D%7B20%7D%3D%5Cfrac%7B11%7D%7B20%7D)
Therefore,
ANSWER:
![P[G\text{ }orB]=\frac{11}{20}](https://tex.z-dn.net/?f=P%5BG%5Ctext%7B%20%7DorB%5D%3D%5Cfrac%7B11%7D%7B20%7D)
