Answer:
C. 26 to 29
She will need between 26 to 29 tables
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
A)
The discriminant (radicand) is √(b^2-4ac), let us call this "d" for the discriminant.
If:
d<0, there are no real solutions (though there are two imaginary ones)
d=0, there is one real solution
d>0, there are two real solutions.
In this case, d=12^2-4(4)9
d=144-144
d=0
So there is one real solution.
B)
9x^2-30x+25=0
9x^2-15x-15x+25=0
3x(3x-5)-5(3x-5)=0
(3x-5)(3x-5)=0
(3x-5)^2=0
x=5/3
x=1 2/3
Answer:
A) a variable
Step-by-step explanation:
A) a variable a variable changes value 7 does not change
B) an expression does not have an equal sign 7 does not have an equal sign
C) a constant 7 is constant, it does not change
D) a term is a group of numbers and variables with no operators
