To find the range we need to find the vertex of the parabola which is at (-b/2a , y)
-b/2a would be 2/2 = 1 ... so find the y value at x = 1
12 - 2(1) - 15 = 1-17 = -16
So the vertex is at (1,-16)
Since the parabola opens upward from that point the minimum value of the range is y = -16
The range would include the point -16 so it is actually
R = [-16,infinity)
Answer:
D
Step-by-step explanation:
-7 cubed = -343
-3 squared = -9
-343 - (-9) = -334
Set up a proportion to solve.
(4mg/5ml)= (20mg/x ml)
Be sure you line up the mg to mg and the ml to ml.
Notice I have both mg on the numerator and both ml on the denominator.
To solve you need to cross multiply.
4x = 5(20)
4x = 100
divide by 4
x = 25 ml
I hope this helps. :-)
Answer:
The two numbers are,
9 and 12
Step-by-step explanation:
let x represent the smaller number.
larger number=2x-6
2x-6+x=21
3x-6=21
3x=21+6
3x=27
x=9
the smaller number is 9
the bigger number is 2(9)-6=18-6=12.
