1. write the fraction 8/9 as a percent. round to the nearest hundredth of a percent where necessary. a. 88.89% b. 1.13% c. 44.44% d. 66.67% 2. write 0.063 as a percent. a. 0.63% b. 6.3% c. 63% d. 630% 3. a survey at your school found that 792 in 1,220 students have a cell phone. what percent of the students in school has a cell phone? round to the nearest hundredth where necessary. a. 6.49% b. 54.04% c. 64.92% d. 79.20%

1.A. 88.89

2.B.6.3%

3.C.64.92%

Step-by-step explanation:

1.

to covert it into percentage multiply it with 100

then it becomes 88.888

rounding off to the nearest hundred it becomes 88.89

2. to convert into percentage multiply it with 100

therefore 0.063×100=6.3%

3. to find percentage

    %= (no of students using mobile / total no of students )× 100

       = ×100

       =64.918

Rounding off to nearest hundred it becomes 64.92%

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.