Answer:
65 degrees
Step-by-step explanation:
First, solve for the unknown angle( not the y's).
the angle 130 is supplementary to that angle so we will use an equation to solve it. (supplementary means it adds up to 180 degrees)
x+130=180
-130 -130
x = 50 so, 50 is the measure of the interior angle
Now we have to use another equation to solve for y:
50+2y=180
-50 -50
2y = 130
/2 /2
y = 65
Thus, y is 65
Answer:
N = 7.5 pounds
Step-by-step explanation:
Formula for the radioactive decay is given by,
Here, N = Final amount
N₀ = Initial amount
λ = Decay constant
t = Duration of decay
Now we can substitute the values from the given question,
N =
N =
N = 15(0.5)
N = 7.5 pounds
OK sooooo
distribute the -3 = -3x + 12
then subtract the 2 to the other side
then you get y = -3x + 10
SOOO D
I believe the second choice is the correct answer. :)
Answer:
Step-by-step explanation:
let an equation of this line : y= ax+b ....a : is the slope
1) the acute angle subtend by it and the line 4+y=0 equal to 45 degree
so : a = tan (45°) =1
so : y = x+b
calculate : b this line passes through point A(2,1) : 1= 2+b
b= - 1
conclusion : y = x -1 color : red 4+y =0 color : bleue
look this graph