Question

microorganisms lesson ​

Answer 1

Answer:

Answer:

43 years

Step-by-step explanation:

The average age of 32 students is 10 years. If the teachers age is also included, the average age increases by one year

To Find :

What is the age of the teacher?

Solution:

average=\frac{sum of observations}{total no. of observations}average=

totalno.ofobservations

sumofobservations

The average age of 32 students is 10 years.

10=\frac{Sum of age of 32 students}{32}10=

32

Sumofageof32students

320 = Sum of age of 32 students

So,

Let x be the age of teacher

New sum = 320+x

New mean = 10 + 1 = 11 years

11 = \frac{320 + x}{33}11=

33

320+x

11 X 33 = 320 + x

363 - 320 = x

So, x = 43

Hence The age of teacher is 43 years

Answer 2

Answer:

element.

How does the atomic radius change as you go from left to right in a period, and top to

bottom in a group