Answer:
I believe the answer is 9
Hello,
You have to know this property:
Answer:
<em>B ( 6 , 3 ) </em>
Step-by-step explanation:
(
,
)
(
,
)
Coordinates of midpoint are (
,
)
~~~~~~~~~~~~~~~~~~
A ( - 7 , - 9 )
B ( x , y )
M ( - 0.5 , - 3 )
= - 0.5 ⇒ <em>x = 6</em>
= - 3 ⇒ <em>y = 3</em>
<em>B ( 6 , 3 )</em>
X+y=15
0.3x+0.6y=0.4*15=6
solve the system of equation.
Multiply equation one by 0.3: 0.3x+0.3y=4.5
subtract the new from the second equation: 0.3y=1.5
y=5
x=10