-2.5(-3+4n+8) can you please expand it? tysm!!

-12.5-10n

Step-by-step explanation:

-2.5(-3+4n+8)

= -2.5(5+4n)

= -12.5 -10n

-12.5-10n

Step-by-step explanation:

(-2.5× -3)+(-2.5×4n)+(-2.5×8)

7.5- 10n-20

7.5-20-10n

-12.5-10n

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

6 hours 48 min

step-by-step explanation:

68÷5=13.6

13.6×30=408min=6 hours 48 min.

hope to and hope that my answer is brainliest.(follow me )