Answer:
4.5 hours
Step-by-step explanation:
Speed= distance/time
So first we will solve 340/3.5 which is 97.1km/h
then we will solve 440/97.1 which will give us 4.5 hours
The half-life is 29 years.
116 : 29 = 4
So we will have 4 periods of half-life:
( 1/2 )^4 = 1/16
150 g * 1/16 = 9.375 g
Answer:
9.375 g of strontium -90 will remain after 116 years.
Tbh bro i dont even know the answer
Step-by-step explanation:
-1.5×0.8=-1.2 without going through the longer method which involves you changing it to fraction first
a The center of the hexagon and of the circle are the same point. Also length of one side of the hexagon = 90/6 = 15 units.
If we join each vertex of the hexagon to the center then we get 6 equilateral triangles (because internal angle of reg hexagon = 120 and vertex angles of the triangles = 60) so the radius = length of side of hexagon = 15 units (answer)
b Area = pi * 15^2 = 706.9 units^2 to nearest tenth. Answer