Let's represent the unknown number with Y
So it says 5 times the sum of Y plus 3 equals 8 times Y minus 9
That is represented as;
5(Y+3)=8Y-9
First of all, multiply 5 by what is in the bracket. That will be 5Y+15
(5 times Y is 5Y and 5 times 3 is 15)
Therefore;
5Y+15=8Y-9
Collect like terms. So -9 will go over the equality sign to become +9. The same applies to 5Y
15+9=8Y-5Y
24=3Y
Divide both sides by 3
24 divided by 3 is 8. So Y= 8
The number is 8 which is B
I need 5 more points to ask a q please <33
24.00 is the correct answer... have a great day
Answer:
The value of 
- 
is 3 ⇒ 2nd
Step-by-step explanation:
The dimensions of any matrix are (m × n), where
- m is the number of its row
- n is the number of its column
Ex: Matrix A of dimensions (2 × 3) has 2 rows and 3 columns, where
means the element in the 1st row and 1st column
means the element in the 1st row and 2nd column
means the element in the 1st row and 3rd column
means the element in the 2nd row and 1st column
means the element in the 2nd row and 2nd column
means the element in the 2nd row and 3rd column
Now lets solve the problem
∵ The matrix B has 3 rows
∴ m = 3
∵ The matrix B has 4 columns
∴ n = 4
∴ The dimensions of matrix B are (3 × 4)
∵ means the element in the 2nd row and 4th column
∴ = 9
∵ means the element in the 3rd row and 2nd column
∴ = 6
- Find the value of -
∵ - = 9 - 6
∴ - = 3
