An equation of an ellipse is given. y2 = 1 − 3x2 (a) find the vertices, foci, and eccentricity of the ellipse. vertex (x, y) = (smaller y-value) vertex (x, y) = (larger y-value) focus (x, y) = (smaller y-value) focus (x, y) = (larger y-value) eccentricity (b) determine the length of the major axis. determine the length of the minor axis.

Step-by-step explanation:

Given

therefore it is a vertical ellipse

thus a=1

eccentricity of Ellipse

Focii are and

thus focii are &

(b) Length of major axis

length of minor axis

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

i think that you should ask google for the answer to that problem because if we don't know it google does