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:
300pi
Step-by-step explanation:
that is 3/4 of a circle with the radius of 20. Meaning that the area is 300pi
-1/3 is the slope of the line
Answer:
4 times 4 plus 10
Step-by-step explanation:
there are waaaay more ways than just this there is
( 8 times 2 ) plus ( 5 times 2 )
and
( 5 plus 5 ) plus 16
plz mark me as brainiest
Answer:
The amount of flour Mrs.Stewart needs for 5 cups of shortening 
cups.
Step-by-step explanation:
Mrs.Stewart pie dough needs 
cups of shortening for 
cups of flour.
Now we assume that the shortening needed for 
cups of flour is 
cups.
Accordingly we can arrange the ratios.
So for one cup of shortening how many cups of flour is needed we have to use the unitary method:
Plugging the value of 
as it is number of cups of shortening Mrs.Stewart have used.
And multiplying both sides with 
.
Number of cups of flour needed when cups of shortenings are used 
.
So, 
The amount of floor Mrs.Stewart needed for cups of shortening 
cups of floor.
