Answer:
12 in³
Step-by-step explanation:
Its made up of 12 (4×3 = 12) cubes of 1 in³ each
So 12 × 1 = 12 in³
Answer:
4 dozen
Step-by-step explanation:
Answer:
m = x / n
n = 15
Step-by-step explanation:
Number of chairs per row = m
Number of rows = n
Number of people = x
Number of chairs per row, m = number of people, x / Number of rows, n
m = x / n
If number of attendees, x = 60 ;
Number of chairs per row, m = 4
The number of rows, n = number of attendees / number of chairs per row, m
Hence, n = 60 / 4 = 15 rows
Answer:
AB = ![\left[\begin{array}{ccc}0&-2\\4&-12\\\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%26-2%5C%5C4%26-12%5C%5C%5Cend%7Barray%7D%5Cright%5D)
Step-by-step explanation:
To obtain the first row of AB
Sum the products of corresponding elements in row 1 of A with elements in column 1 and 2 of B
To obtain the second row of AB
Sum the corresponding elements in row 2 of A with elements in column 1 and 2 of B, that is
AB = ![\left[\begin{array}{ccc}0(-1)+2(0)&0(3)+2(-1)\\-4(-1)+0(0)&-4(3)+0(-1)\\\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%28-1%29%2B2%280%29%260%283%29%2B2%28-1%29%5C%5C-4%28-1%29%2B0%280%29%26-4%283%29%2B0%28-1%29%5C%5C%5Cend%7Barray%7D%5Cright%5D)
= ![\left[\begin{array}{ccc}0+0&0-2\\4+0&-12+0\\\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D0%2B0%260-2%5C%5C4%2B0%26-12%2B0%5C%5C%5Cend%7Barray%7D%5Cright%5D)
=
Answer:
20
Step-by-step explanation:
558 divided by 28 =19.9
if you round this you get 20
it took Betty 20 days to read a book that has 558
