Answer:
The answer is 4.25*10^−4
Step-by-step explanation:
First convert 2.5*10^-5 into decimal form
That's
2.5*10^-5 = 0.000025
0.00045 - 0.000025 = 0.000425
= 4.25*10^−4 in scientific notation
Hope this helps
If you add them all you get 50x12y13
Answer:
don't know the answer but hope this helps
Substituting for a Variable
If you know the value that the variable is equal to, you can substitute that value in for the variable in the expression! Let's look at an example. Since we know that x=5, we can directly substitute or replace the x in the expression x+3 with a 5 to solve for y!
9514 1404 393
Answer:
78.5 km
Step-by-step explanation:
Measured at the airport, the angle between the two planes is ...
180° -60° -50° = 70°
The law of cosines tells us the distance between the planes is ...
d = √(50² +80² -2·50·80·cos(70°)) ≈ √6163.84 ≈ 78.5 . . . km
The planes are about 78.5 km apart.
