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nata0808 [166]
3 years ago
6

One more question. Suppose the function shown below was expressed in standard form, y=ax^2+bx+c. What is the value of a?

Mathematics
2 answers:
andreyandreev [35.5K]3 years ago
6 0
the value of a is 2 bc by looking at the graph a normal parabola of x^2 would bc followinf the 1-3-5 rule but this does not

from the vertex it goes over 1 and up 2







TEA [102]3 years ago
4 0

Lets write it in vertex form

y = a(x - 1)^2 - 2        (because the vertex is at (1, -2)

Now the zeroes are   0 and 2 so substituting x = 2 and y = 0 in the above:-

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

0 = a - 2

a = 2

so we have y = 2(x - 1)^2 - 2

which in standard form is  

y = 2x^2 - 4x + 2 - 2

y = 2x^2 - 4x   is the answer

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Calculate the angle of depression, x, if the boat is 750 ft. away from the light house and the light house is 300 ft high. Round
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Firstly , we need to draw diagram

we are given

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now, we can use tan formula

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now, we can find x

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angle of depression is 21.8 degree.....Answer

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zloy xaker [14]

An equilateral triangle sides are all equal to each other. This means that is one side of an equilateral triangle is x + 3 then the sides of the other two triangles as also each x + 3

The formula for perimeter of a triangle is:

Perimeter = side 1 + side 2 + side 3

Or in the case of an equilateral triangle it would be:

Perimeter = 3(side)

This means that for the formula of this equilateral triangle you have:

Perimeter = 3(x + 3)

If asked the three out side of the parentheses can be distributed, meaning that you multiply the outside number (in this case that is 3) to all the number inside the parentheses (in this case that is x and 3)

Perimeter = (3 * x) + (3*3)

Perimeter = 3x + 9

Both of these are correct:

P = 3(x + 3)

P = 3x + 9

Hope this helped!

~Just a girl in love with Shawn Mendes

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