Answer:
d. x=45
Step-by-step explanation:
Answer:
x=4 x=-5
Step-by-step explanation:
x^2+x-20=0
Factor
What 2 numbers multiply to -20 and add to 1
-4*5 =-20 and
-4+5 =1
(x-4) (x+5) =0
Using the zero product property
x-4 =0 x+5=0
x=4 x=-5
Answer:
B
Step-by-step explanation:
The line on the left has equation y = x + 1
The end of the line has an open circle at x = 2 meaning that x ≠ 2
Thus it is defined as y = x + 1 for x < 2
The line on the right has equation y = x + 2
The start of the line has a closed circle at x = 2 meaning that x can equal 2
Thus it is defined as y = x + 2 for x ≥ 2
Thus the definition for the function is B
Answer: Positive correlation is a relationship between two variables in which both variables move in tandem - that is, in the same direction. A positive correlation exists when one variable decreases as the other variable decreases; or, one variable increases while the other increases.
Step-by-step explanation:
We have that
<span>10x - 4 = 2 ( ? )
</span>I proceed to replace the missing value with the given expression
case a-------------> <span>5x - 4
</span><span>then
</span>10x - 4 = 2 (5x-4 )--------> 10x - 4 = 10x-8--------> is not solution
case b-------------> 5x - 2
then
10x - 4 = 2 (5x-2 )--------> 10x - 4 = 10x-4--------> is solution
case c-------------> <span>10x - 4
</span>then
10x - 4 = 2 (10x - 4 )--------> 10x - 4 = 20x-8--------> is not solution
case d-------------> <span>10x - 8
</span>then
10x - 4 = 2 (10x - 8 )--------> 10x - 4 = 20x-16--------> is not solution
the answer is the option b) 5x - 2
