Answer:
value was â€"4. Which could be Arianna’s original expression? One-sixth (negative 3 x minus 24) One-sixth (negative 5 x minus 8) One-sixth (negative 10 x minus 4) One-sixth (negative 12 x minus 16).
<em>T= 250 + 45a.</em>
<em>Since the cost of the medicine costs $250, and there is $45 dollars per appointment then 45 a would represent the 45 dollars for every appointment she chooses to have.</em>
<em>Hope this helps and have a nice day.</em>
<em>-R3TR0 Z3R0</em>
To prove that Amy's answer to the equation is correct, we can use two methods:
First, we can use the quadratic formula and find the solutions. Then compare these with Amy's answer.
Second, we can perform checking on which we substitute each in the problem and result should be equal to zero.
Let us use the second option, perform checking for x=7/2.
2X²+ 5X-42=0
2*(7/2)² +5(7/2) - 42=0
24.5+15.5 - 42=0
42-42=0
0=0
Perform checking for x= -6
2(-6)²+5*(-6) -42=0
72-30-42=0
42-42=0
0=0
Therefore, Amy's answer is correct.
Answer:
Find distance between A (-3, 5) and B (4, -6)
Explanation:
Use formula for distance:
d
2
=
(
x
2
−
x
1
)
2
+
(
y
2
−
y
1
)
2
d
2
=
(
4
+
3
)
2
+
(
−
6
−
5
)
2
=
49
+
121
=
170
d = 13.04
