Answer:
a) False
b)True
c)False
d)True
e)True
Step-by-step explanation:
a) False
No it is not true for all cases
Ex
2 x = 5 ------1
3 x =7.5 ------2
So here equation is 2 but we have a value of x=2.5.
b)True
If a linear system has free variables, then it must have infinitely many solutions.
c)False
Every linear system with the same number of equations and variables has a unique solution.This is not true for all cases.
d)True
In every linear system with 2 equations and 3 variables x1,x2,x3, the last variable x3 is a free variable.
e)True
If x1 = x2 = ··· = xn = 0 is a solution to a linear system, then the system must be homogeneous.
Answer:
Step-by-step explanation:
Answer:
a. _ √20 , about 4.472136
b - (-3, 8)
c- Slope of 2
Step-by-step explanation:
Calculator
Answer:
A : 25
Step-by-step explanation:
In a neutral atom, the number of electrons is equal to the number of protons. The atomic number indicates the number of protons.
The mass number is the sum of the number of neutrons and the number of protons.
mass number=protons+neutrons
As we know from the atomic number, the number of neutrons is 14 and the number of electrons is 11.
mass number = 14 + 11
