Vertex form for a parabola with vertex (p,q) is
We have (p,q)=(-4,5) and another point (-3,2) so we can solve for <em>a:</em>
Putting it together,
Answer:
We could multiply that out if we like but I won't bother.
Exemplo:
1 1/3 * 1/4 =
(1*3+1)/3 * 1/4 =
(3+1)/3 * 1/4 =
4/3 * 1/4 =
(4*1)/(3*4) =
4/12 = 1/4
Answer:
x = 6
Step-by-step explanation:
For the triangles to be similar then the ratios of corresponding sides would be equal, that is
= , substitute values
= ( cross- multiply )
3(x - 1)² = 75 ( divide both sides by 3 )
(x - 1)² = 25 ( take the square root of both sides )
x - 1 = ± = ± 5 ( add 1 to both sides )
x = 1 ± 5 , then
x = 1 + 5 = 6 or x = 1 - 5 = - 4
But x > 0 then x = 6
For the triangle to be similar then x = 6
The answer for this is B.