Answer:
well if we are going by pattern them possibly 20 or 30 im sorry if its wrong i just need more info on how i should answer it
Step-by-step explanation:
Multiplying-
Negative times negative is positive
negative times positive is negative
positive times positive is positive
Dividing-
positive divided by positive is positive
negative divided by positive is negative
positive divided by negative is negative
negative divided by negative is positive
Hope this helps!!
If you don't mind please mark as brainliest :) Thanks!!
Answer:
Step-by-step explanation:
Recall, if we have a polynomial of the form 
, then we say that a is a zero of multiplicity k and b is a zero of multiplicty m. For example, in the polynomial of the form 
-5 is a zero of multiplicity 10 and 2 is a zero of multiplicity 3. If we want to know the degree of the polynomial, just add the multiplicity of both zeros (13 in our example).
In this case, we know that the degree of our polynomial should be at least 3(multiplicity 2 and multiplicity 1). So, lets take the polynomial of the form
.
In here, a is a zero with multiplicity 1 and b is a zero with multiplicity 2. We are also given that
.
Which implies that 
. Since the square of any number is a positive number, it must happen that a>0. So, we have that
![b= \pm \sqrt[]{\frac{1}{a}}](https://tex.z-dn.net/?f=b%3D%20%5Cpm%20%5Csqrt%5B%5D%7B%5Cfrac%7B1%7D%7Ba%7D%7D)
.
We can choose any value of a and solve for b. Let us choose a=4. So we can have b=1/2 or b=-1/2. Let's use b=1/2. So our polynomial would be
which we can easily check that f(0)=-1.
Given the total number of students are 180, the mean of data is 88g, and standard deviation is 1g.
A normal curve is a bell-shaped curve with symmetry about the mean and it spreads uniformly on both sides (left side and right side) of the mean.
The empirical rule is also called "68-95-99.7" rule. It says that :-
A) 68% of the data values fall between 1 standard deviation about mean (34% on left side and 34% on right side),
B) 95% of the data values fall between 2 standard deviations about mean (47.5% on left side and 47.5% on right side), and
C) 99.7% of the data values fall between 3 standard deviations about mean (49.85% on left side and 49.85% on right side).
According to distribution of normal curve and "68-95-99.7" empirical rule, we can say 49.85% of data values are above the mean within 3 standard deviations.
So it means 49.85% of total students report readings more than 88g.
Number of students reporting readings more than 88g = 49.85% of 180 = 0.4985 × 180 = 89.73
Hence, approximately 89 students report readings more than mean value.
