Which of the following is the value of PQ? A) 46

B) 61

C) 91

D) 67

Step-by-step explanation:

QR = QS

3x + 16 = 7x - 24

16 + 24 = 7x - 3x

40 = 4x

x = 40/4

x = 10

substitute x=10 into PQ = 2x+41

PQ = 2(10) + 41

PQ = 20 + 41

PQ = 61

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

a

step-by-step explanation:

the answer is a