Complete the following activity to find the class mark of classs 15-20.

Find the class- mark of the class 35-40.

Complete the following activity find n(A cap B) .

Find the class mark of the class 80-90.

One of the roots of the quadratic equation 5m^2+2m+k=0 is -7/5 . Complete the following activity to find the value of k .

Complete the following activities Complete the following activity to find the frequency of the class. ,

What is the class mark of class 25-35?

One of the roots of the quadratic equation kx^2-3x-1=0 is 1/2. Complete the following activity to find the value of k.

Complete the following activity to find the value of determinant:

What is the class mark of class 45-55 ?