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murzikaleks [220]
2 years ago
10

Evaluate the expression when y=6 y²-9y-7

Mathematics
1 answer:
Aneli [31]2 years ago
6 0

Answer:

The answer would be Y= 5 ± √67 / 6

Step-by-step explanation:

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Please help !!
olga2289 [7]
If you have learned how to find the line of best fit manually, then you can do it that way. Perhaps you may want to just find a line that can connect at least two of the points and I believe that that line will be able to represent the other points because, in general, the points are pretty close to one another. 

If you don't want to do it manually and have a graphing calculator (which I recommend) then you can use that to find the line of best fit (and if you want then you can see how precise your points are with your r^2 value). Or there is a website (http://illuminations.nctm.org/Activity.aspx?id=4186), which you can use to help you to find the equation of that particular line. 

Once you have that done, then you can substitute 2009 for the x value in the equation and then see what y value the equation produces. That will then be your answer :) 
4 0
3 years ago
Simplify -3d^8(-4d^-14). Assume d =/ 0​
Alenkinab [10]

Answer:

\frac{12}{d^6}

Step-by-step explanation:

-3d^8\left(-4d^{-14}\right)

Double negative = Positive:

3d^8*4d^{-14}

Apply negative exponent formula:

3*d^8*4*\frac{1}{d^{14}}

Multiply:

\frac{12d^8}{d^{14}}

Apply exponent rule: \frac{x^a}{x^b}=\frac{1}{x^{b-a}}

Thus, \frac{12}{d^{14-8}}

Simplify:

\frac{12}{d^6}

8 0
3 years ago
What is the sum of the geometric series in which a1 = −5, r = 3, and an = −405?
marysya [2.9K]
An = a1 * r^(n-1)

-405 = -5*3^(n-1)

3^(n-1) = 81

3^4 = 81  so n-1 = 3  and n =  4

Sn  = S4  =  -5 (1 - 3^4)   / ( 1 - 3)   =  400 / -2 = -200 Answer
3 0
3 years ago
Which of the following relationships represents a function?
belka [17]

Answer: c

Step-by-step explanation:

4 0
3 years ago
There are 8 big fish for every___ small fish.
taurus [48]
There are 8 big fish for every 10 small fish, ..... 5 small fish.
4 0
3 years ago
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