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Y_Kistochka [10]
3 years ago
14

4. SHOW YOUR WORK: Evaluate the arithmetic series. 12 + 21 + 30 + 39..., n = 15

Mathematics
1 answer:
Yanka [14]3 years ago
8 0

Answer:

i got -1 3/13

Step-by-step explanation:

i just used a calculator im not entirely sure if that's the answer you're looking for but.. i hope this helps :)

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The equation of the quadratic function represented by the graph is y=a(x-3)^2-1. What is the value of a?
Y_Kistochka [10]

Answer:

Value of a is 2      

Step-by-step explanation:

Given the equation of the quadratic function represented by the graph is y=a(x-3)^2-1. we have to find the value of a.

As seen in the figure, parabola cuts the graph at point (2,1) implies point (2,1) is one of the solution of the given quadratic equation i.e of given parabola.

∴  Point (2,1) satisfies the given equation.

Hence, we can find the value of a by putting the value of x and y, we get

1=a(2-3)^2-1

⇒ 2=a

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