Question

(d) If b is the mean proportional between a and c, then b=​

Answer 1

Answer:

Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel. ... Two types of chlorophyll exist in the photosystems of green plants: chlorophyll a and b

Answer 2

★Solution:

Here it is clearly given that b is the mean proportional between a and C.

Therefore, b² = ac

Now (a²+b 2)(b²+c ²) = (a ²+ ac )( ac +c²)

• (a ²+b ²)(b²+c 2) = ala + c) c(a t+ C),

• (a²+5 ²)(b²+c²) = ac(a+c)²,

• (a ²+b ²)(b 2+c ²) = b2 (a +c)²

• (a ²+b²)(b 2+c ²) = (ab + bc )²

⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀ ⠀

So,

(ab + bc ) is mean proportional of (a ²+b²) and (b²+c ²).(Hence proved)

Hope it helps uh!... ❤