Answer: C. 5
Because (x^(2/3))(x^(3/3))=x^(5/3)
Try a few:
1+3+5=9 too small
5+7+9= 21 just right
The greatest integer is 9
It is 3out of 100 for your answer
Answer:
6 nickels and 9 quarters
Step-by-step explanation:
x- nickels
y- quarters
----------------
the 2 equations are:
add up the 2 equations:
then
Answer:
x² + 6x - 5x – 30=(x-5)(x+6)
Step-by-step explanation:
x² + 6x - 5x – 30=x²+x-30
delta=1-4(-30)=1+120=121=11²
Sqrt(delta)=11
The roots are:
x1,2=(-1 +- 11)/2
Thus we get
x1=(-1+11)/2=10/2=5
x2=(-1-11)/2=-12/2=-6
Finally:
x² + 6x - 5x – 30=(x-5)(x+6)