Question

(ii) Find the common difference of an AP whose first term is 5
and the sum of the first four terms is half the sum of the next
four terms.
​

Answer 1

Answer:

Let d is common difference of AP

Now first 4 terms are 5, 5+d, 5+2d, 5+3d

and next 4 terms 5+4d, 5+5d, 5+6d, 5+7d

Given that, the sum of its first four terms is half the sum of the next four terms.

i.e.,

5 + 5+d + 5+2d + 5+3d=

2

5+4d + 5+5d + 5+6d + 5+7d

20+6d=

2

(20+22d)

20+6d=10+11d

d=2

Hence, the common difference of the given A.P. is 2

Answer 2

Answer:

A lysosome is a cell organelle. They are like spheres. ... With a wider definition, lysosomes are found in the cytoplasm of plant and protists as well as animal cell. Lysosomes work like the digestive system to break down, or digest, proteins, acids, carbohydrates, dead organelles, and other unwanted materials