Answer:
m=-2 and b=3
Step-by-step explanation:
One way to find slope is to use rise over run (most useful when there is a graph). First find any two points along the line where it intersects with a point on the grid. (1,1); (2,-1) and (3,-3) are some examples. Then count how many spaces vertically and then horizontally it takes to get to the next point. In this case it is two spaces down (rise) and 1 space right (run). So rise/run = 2/1 =2. That is your slope. Because it is pointing downwards or decreasing we know it is a negative slope.
The y-intercept is just where the line intercepts with the y-axis. In other words, when x=0 what does y equal? Here it is 3.
Answer: half life = 1.98 seconds
Step-by-step explanation:
Given that the amount of sodium-24 in the patient’s body in milligrams after t hours is given by
S(t) = 5e–0.35t.
From the equation above, decay constant K = 0.35
Half life = ln2/K
Half life = ln2/ 0.35
Half life = 1.98 seconds
Answer:
108 degrees difference.
Step-by-step explanation:
63+45=108
Answer:
(x−5y)(9x+8)
Step-by-step explanation:
9x^2−45yx+8x−40y
Do the grouping 9x^2−45yx+8x−40y=(9x^2−45yx)+(8x−40y), and factor out 9x in the first and 8 in the second group.
9x(x−5y)+8(x−5y)
Factor out common term x−5y by using distributive property.
(x−5y)(9x+8)
Answer:
B. 66
Step-by-step explanation:
73+25 = 98
Z = 98-32
Z = 66
