Answer: the answer is 4
Step-by-step explanation:
when looking for the half life, it says to look for when the initial amount is half of what it used to be, because it is 100, 100 divided by 2 is 50, and when looking at the hours (x value) for 50 it says 4.
9514 1404 393
Answer:
- -√5
- 3/5
- -4/5
Step-by-step explanation:
The relevant relations are ...
sec = ±√(tan² +1)
cos = 1/sec
csc = 1/sin = ±1/√(1 -cos²)
Sine and Cosecant are positive in quadrants I and II. Cosine and Secant are positive in quadrants I and IV.
__
1. sec(θ) = -√((-2)² +1) = -√5
2. cos(θ) = 1/sec(θ) = 1/(5/3) = 3/5
3. csc(θ) = -1/√(1 -(-3/5)²) = -√(16/25) = -4/5
Answer:
Step-by-step explanation:
<-- Given
<-- Multiply by the conjugate of the denominator as a factor of 1
<-- Use the Distributive Property and FOIL
<-- Rewrite 
as 
<-- Rewrite in 
form
Well 1/40 is 0.025 so that should be the write fraction to use
A/B = 11/15 OR 15 x A = 11.B OR B= 15A/11
Actual Gallons in A = 550 x 66 % = 363 gal
Total capacity of B = 15A/11 OR (15 x 550)/11 = 750 gal.
Actual Gallons in B = 750 x 53% = 397.5 gal
