Well I do not see the figure but I will assume it is a triangle. there are 3 angles in a triangle. Those 3 angles add up to 180. Since we know this, you can use the equation
angle1 + angle2 + angle3 = 180
we have 2 of the angles so with a little algebra we can solve for the last angle like this
180 - angle1 - angle2 = angle3
plug in 2 angles
180 - 50 - 90 = angle3
So answer is
angle3 = 40 degrees
Answer:
find the area of all the shapes
Base x height / 2 = area of triangle
12x10=120/2=60
there are 4 triangles so 60 x 4 = 240 square inches
length x width = area
10 x 10 = 100
240+100=340
C. is the answer
Hope this helps
Step-by-step explanation:
It is given that at the moment the first pulse reaches the wall, a second pulse is sent down the spring. Now, when the two pulses meet they will be subject to the principle of superposition and as one is upside down (the reflected pulse) and the other is up (the second pulse), there will be a nullifying effect and the spring will appear straight for that split moment. Thus we can say that there will be a destructive interference where one pulse will destroy the other or in other words nullify the other's existence. After that moment the pulses will move towards their respective ends as if nothing happened.
Hence, Option B is the correct option.
Answer:
-34
Step-by-step explanation:
