Question

Exercise 4E
(d) 2 +5
рес
1. Every hour a cell divides into 2 cells. Which expression represents the number of cells after 5 hours?
2. A certificate of pedigree lists a dog's parents, grandparents, and so on. The power 26 describes
3. The sun is the centre of our solar system. The sun is the star closest to our planet. The surface temperatu
number of great-great-great-great grandparents a dog has. How many is this?
of the sun is close to 10,000°F. Write 10,000 using exponents.
4. To save money for a video game, Ajay puts 1 rupee in an envelope. Each day for 8 days he doubles
5. In Kalpana's school, one person will contact 4 people and each of those people will contact 4 other
number of rupees from the day before. How much will be saved on the eighth day ?
and so on. How many people will be contacted in the fifth round?
5. The population of a certain town triples every decade. If the population in 2000 was 45000, how
A painting is made of 3 concentric squares. The side length of the largest square is 24 cm. What
Prabha wants to predict the number of hits she will get on her web page. Her web page re
3 hits during the first week it was posted. If the number of hits triples every week, how many hits
On Monday, Renu tells 3 people a secret. The next day each of them tells 3 more people. If this
continues, how many people besides Renu will know the secret next Monday.
acteria can divide every 20 minutes, so 1 bacterium can multiply to 2 in 20 minutes, 4 in 40
(b) 52
people will be living in this town is 2050?
area of the painting?
web page receive during the 8th week?
nd so on. How many bacteria will there be in 6 hours? Write your answer using exponents,
valuate.​

Answer 1

Answer:

hi bro good morning friends with me and my best friends are called friends and friends and family and best friend is always in the direction