Answer
39 bills of 1$
16 bills of 10$
Step-by-step explanation:
x-nr of $1
y-nr of $10
x*1+y*10=199
x+y=55 , x=55-y
so I use the substitution method
(55-y)*1+10y=199
55+10y-y=199
-55 -55
9y=144
y=144/9
y=16
so x=55-16
x=39
verify 16*10+39*1=160+39=199
Answer:
Part i) -14
Part ii) 11
Part iii) 4
Step-by-step explanation:
we know that
The average rate of change or slope using the difference quotient formula is equal to
Part i) x= -3 and x= -1
In this problem we have
Substitute
Part ii) x= -3 and x= 0
In this problem we have
Substitute
Part iii) x= (1-h) and x=(1+h)
In this problem we have
Substitute
Answer:
8.25 years
Step-by-step explanation:
hope this helps :)
There are many ways to do this. Such ways are using the quadratic formula, completing the square, etc.
We have
We can add 46 to both sides so the -21 becomes a +25. by doing that, we get
This can be wrote as
We solve the square root and get
(The +- is a plus minus sign.) Subtract five on both sides to get
The answer is
C.