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amid [387]
2 years ago
7

Can. someone help me i dont understand this

Mathematics
2 answers:
Kipish [7]2 years ago
6 0

Answer:

(A)   (-12, -19)

Step-by-step explanation:

emmasim [6.3K]2 years ago
5 0

Answer:

A) -12, -19

Step-by-step explanation:

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a parabola has an x-intercept at 2, its axis of symmetry is the line x=4, and the y-coordinate of its vertex is 6. Determine the
nlexa [21]

Answer:

The standard equation of the parabola is:

y=-\frac{3}{2}x^2+12x-18

Step-by-step explanation:

An x intercept of 2 means that the point (2, 0) is in the graph of the parabola.

We can also write the general expression for the parabola in vertex form, since we can use the information on the coordinates of the vertex: (4, 6) - recall that the axis of symmetry of the parabola goes through the parabola's vertex, so the x-value of the vertex must be x=4.

y-y_{vertex}=a\,(x-x_{vertex})^2\\y-6=a\,(x-4)^2

Now we can find the value of the parameter "a" by using the extra information about the point (2, 0) at which the parabola intercepts the x-axis:

y-6=a\,(x-4)^2\\0-6=a\,(2-4)^2\\-6=a\,4\\a=-\frac{6}{4} =-\frac{3}{2}

Then the equation of the parabola becomes:

y-6=-\frac{3}{2} \,(x-4)^2\\y-6=-\frac{3}{2} (x^2-8x+16)\\y-6=-\frac{3}{2}x^2+12x-24\\y=-\frac{3}{2}x^2+12x-18

7 0
3 years ago
Janaina is trying to solve the following equation by completing the square: x^2+18x-9 = 0.She successfully rewrites the above eq
valentinak56 [21]
The Answer Is :
c = x^2 + 2bx + b^2
3 0
3 years ago
Jasmine was expected to get $150 for her bonus, but she only got $100. What was the percent error?
Slav-nsk [51]

Answer:

Jasmine expected to get $150 for her bonus, but she only got $100. What was the percent error?

-----

Amt of error:: $50

----------

% error:: 50/150 = 1/3 = 33 1/3%

7 0
3 years ago
What is 1/3 of eleven sixteenth
TiliK225 [7]
It’s 5 1/3 because 16 divided by 3 is 5 1/3
8 0
3 years ago
A $310 suit is marked down by 10%. Find the sales price.
Angelina_Jolie [31]

Answer:

The sale price is $279.

Step-by-step explanation:

$310-10%=$279

4 0
3 years ago
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