Answer:
25x^2 -1
Step-by-step explanation:
If you multiply parentheses:
(5x*5x) + (5x*-1) + (1*5x) + (1*-1)
25x^2 - 5x + 5x -1
25x^2 -1
A simpler way is to memorize this formula
(Square1 - square2)= (sqrt of square1- sqrt of square2)*(sqrt of square1 + sqrt of sqaure2)
Answer:
3
Step-by-step explanation:
18 factors to 2, 3, 3
45 factors down to 5,3,3
Answer:
the point
Step-by-step explanation:
the point makes a decimal a decimal
(x-3)=-3x+25
Because we know that y=x-3 so we put that in place of y in the equation
Answer:
D.) If soccer balls are sold for $2.05 or $14.61 each, the store will break even but will not make a profit.
Step-by-step explanation:
Let us assume x = selling price of each soccer ball
y = daily profit earned from selling of soccer balls
Given that
Y=
where,
a = -6
b = 100
c = -180
Now we have to applied the formula which is as follows
x
x^1 = -2.05285
Now
x^2
x^2 = 14.6138
Based on this the option D is most appropriate as per the given situation