Answer:
It is a singular matrix system.
Step-by-step explanation:
A column of all zeros in a matrices says that the variable associated with that column has no effect on the output.
For example If the first column of a matrix consists of zeros, this means that the coefficient of the first variable is zero in every equation in the system . This means that if there is any solution at all, then there must be an infinite number of them, since you can set that first variable to any value at all and still satisfy all of the equations.
Answer:

Step-by-step explanation:

To simplify the given expression, we need to remove the parenthesis

To simplify it we combine like terms
the terms that has same variables are like terms


The given expression becomes

Answer:
17.55
Step-by-step explanation:
tenths are 1 to the right of the decimal hundredths are 2 places right of the decimal and thousands are 3 times right of the decimal
17.546 rounded to the hundredths is 2 times to the right and there is a 5 that rounds it up to 17.55
To isolate and ultimately solve for a:
1. bh=2a
2. bh/2=a
________
1. multiply h over to the other side (and cancel it on the right)
2. Divide by 2 on both sides
Answer: roughly 37.7%
Step-by-step explanation:
110+75+315=490
110+75=185