Answer: b and d
Step-by-step explanation:
Since the roots are x=2 and x=6, we can write the equation as
Substituting in the coordinates of the vertex,
So, the equation is 
On expanding, we get 
Considering that the data is only noted and not changed, this is an example of an observational study.
<h3>What are observational and experimental studies?</h3>
- Experimental study: In an experimental study, there is an intervention in a sample, and it's effect is studied.
- Observational study: In an observational study, the sample is just analyzed, without any intervention.
In this problem, the data, which is the number of miles traveled, is only analyzed, no interventions are made, hence this is an example of an observational study.
More can be learned about observational studies at brainly.com/question/24321224
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The value of 28 tens is basically doing 28 times 10(in case you didn't know). 28 times 10 is 280. So the value of 280 tens is 280.
Answer:
D) (x - 2)(x² - 8)
Step-by-step explanation:
Separate the polynomial into two groups of two terms and factor out the common value from each group. If the values factored out from each group are the same, then you can use the grouping method. The factors will be the outside terms and the common factor.
x³ - 2x² + -8x + 16
= x²(x - 2) + -8(x - 2)
= (x² - 8)(x - 2)
Coordinates are written (x,y). So find P on the graph. Start at the origin, (0,0), and go left 2 units, sp you're right under P. Since you went left, it's negative, x=-2. Then just go up until you get to P, y=3. So you end up with P is at (-2,3). Hope this helps!
