Answer:
i need the formulas
Step-by-step explanation:
Answer:
Distance between Archimedes and the rock = 7.51 m ≅
Step-by-step explanation:
The sunlight makes an angle of depression of 43 degrees
Hence angle between the rock and the sunlight rays is = 90-43=47 degrees
Distance between Archimedes and the rock = Tan 47 = X/7
X = 7 tan 47 = 7.506580970172 = 7.51m ≅
Answer:
$4000 at 6%
$1000 at 8%
Step-by-step explanation:
let 'x' = portion of principle
let '5000-x' = another portion of principle
.06(5000-x) + .08(x) = 320
distribute .06 to get:
300 - .06x + .08x = 320
subtract 300 from each side:
-.06x + .08x = 20
.02x = 20
x = 20/.02
x = 1000
5000 - x = 1000
x = 4000
Answer:
multiply all the sides together
Step-by-step explanation:
if it's a test I can't rightly give you the answer without breaking the honour code, but i will say that the denominator is 40 :)
<span>You would have to wait 318 years for 1/5 (20%) of the Radium to disappear. 1590 is the point where half of the Radium would decay, so if you take 20% of that, it would equate out to 318 years. Radium has a long half life!</span>
