Question

LMNO is a rhombus, seg OP is perpendicular to side LM and
seg OQ
is perpendicular to side MN. Prove that
seg OP is congruent to seg OQ...
plz ans...need it urgent..​

Answer 1

Answer:

This implies that

x2+2ax=4x−4a−13

or

x2+2ax−4x+4a+13=0

or

x2+(2a−4)x+(4a+13)=0

Since the equation has just one solution instead of the usual two distinct solutions, then the two solutions must be same i.e. discriminant = 0.

Hence we get that

(2a−4)2=4⋅1⋅(4a+13)

or

4a2−16a+16=16a+52

or

4a2−32a−36=0

or

a2−8a−9=0

or

(a−9)(a+1)=0

So the values of a are −1 and 9.

Answer 2

Answer:

The outer layer, known as the enamel, contains a component of calcium, which tends to be white in color. But, the whiteness of enamel is sometimes out of your control. Some people are born with whiter, thicker enamel and may simply be blessed with great looking teeth.