Answer:
Juanita dissolves 46 g of MgBr2 (molar mass: 184.11 g/mol) in 0.5 kg of distilled water. What is the molality of the solution?
[ (12 - n)/7 ] = -1
12- n = -7
-n = -19
n = 19
-(-2-5x)+(-2)=18
2+5x-2=18
5x=18
x=18/5=3.6
Answer:
C) y = 2x + 7; y = 2x + 2
Step-by-step explanation:
The two lines are parallel and so will have the same slope.
From the graph, the slope of both lines are two.
Using slope intercept formula, y=mx+c, with m=2, we have y=2x+c
The blue line has a y-intercept of 2 so the equation is

The red line has a y-intercept of -7 so the equation is

Hence the system is
y=2x+2
y=2x-7
The correct answer is C
Answer:
The measure of one exterior angle is 45 degrees.
Step-by-step explanation:
The formula to find exterior angle of and shape is 360 degrees divided by n (number of sides the shape has). 360 divided by 8 = 45 degrees.