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dolphi86 [110]
3 years ago
11

Please help with problem !!!

Mathematics
1 answer:
True [87]3 years ago
7 0

Answer:

Step-by-step explanation:

y = 2x^2 - 12x +19                Put brackets around the  1st 2 terms. Take 2

y = 2(x^2 - 6x ) + 19             Take 1/2 of the 6 square it and add inside the brackets

y = 2(x^2 - 6 + (6/2)^2) +19 Subtract 2 *9 from the 19. Express 1st 3 terms as ( )^2

y = 2(x- 3)^2 + 19 - 18

y = 2(x - 3)^2 + 1

Answers

y intercept when x = 0 is y = 19

axis of symmetry x = 3

vertex: (3,1)

Graph

graph: red

axis of symmetry: blue

y intercept, vertex: green

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and we can write ...
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Add  9  to each side:              <u> x     =  9</u>

Now that we know what 'x' is, we can find the size of Angles-5  and -7 .

Angle-7  =  9x  = 81° .

Now look at Angle-6 ... the one that's the answer to the problem.

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Subtract 81° from each side:    Angle-6  =  <em>99° .</em>


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