Multiply and add it up and you got ur answer
The answer is 75
First you subtract 180 and 165 to find that smallest angle inside the triangle(15). Then you add 15 and 90,the two angles you know, and do 180 - 105= 75.
The trick is that all angles inside a triangle equal 180 degrees. Hope this helps!
Answer:
The answer is 3/1 or 3
Step-by-step explanation:
30/10 = 3/1 = 3
Thus, The answer is 3/1 or 3
<u>-TheUnknownScientist</u><u> 72</u>
Answer:
2
Step-by-step explanation:
So!
If the d (discriminant)
d > 0 Then 2 solutions
d = 0 Then 1 solution
d < 0 Then none
36 > 0 so 2 solutions
Answer:
Step-by-step explanation:
For a first order decay, fraction remaining = 0.5n where n = number of half lives elapsed.
fraction remaining = 55% = 0.55
0.55 = 0.5n
log 0.55 = n log 0.5
-0.2596 = -0.301 n
n = 0.8625 = # of half lives elapsed
0.8625 half lives x 2.5 billion years/half live = 2.16 billion years have elapsed = age of the rock
b) 0.15 = 0.5n
log 0.15 = n log 0.5
-0.824 = -0.301 n
n = 2.74 half lives
2.5 billion years/half life x 2.74 half lives = 6.85 billion years = age of rock
