3 years ago

How do you find the vertex of a parabola..?

2 answers:

4 0

Well you would have to use the formula x= -b/2a to find the value of x and then substitute that value of x in the equation to find y<span />

11111nata11111 [884]3 years ago

4 0

The vertex formula is derived from the completing-the-square process, just as is the Quadratic Formula. In each case, memorization is probably simpler than completing the square.) For a given quadratic y = ax2 + bx + c, the vertex (h, k) is found by computing h = –b/2a, and then evaluating y at h to find k.

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The ratio of the side lengths of a quadrilateral is 3:3:5:8, and the perimeter is 380cm. What is the measure of the longest side

castortr0y [4]

Answer:

160

Step-by-step explanation:

Add the ratios together to get the sum of them is 19. Since the perimeter is 380, divide 380 by 19 to get 20.

The shortest side is 3(20) = 60,

the next side is 5(20) = 100, and

the longest side is 8(20) = 160

3 0

3 years ago

Add the polynomials.<br><br> (x2−11x+6)+(x2+5)

Oksana_A [137]

Answer:

$\boxed{2 {x}^{2} - 11x + 11}$

Step-by-step explanation:

$= > ( {x}^{2} - 11x + 6) + ( {x}^{2} + 5) \\ \\ = > {x}^{2} - 11x + 6 + {x}^{2} + 5 \\ \\ = > {x}^{2} + {x}^{2} - 11x + 6 + 5 \\ \\ = > 2 {x}^{2} - 11x + 11$