Answer:
cos Θ = 7/25
Step-by-step explanation:
First, we find the hypotenuse.
c² = a² + b²
c² = 7² + 24²
c² = 49 + 576
c² = 625
c = √625
c = 25
cos Θ = adj/opp
cos Θ = 7/25
Answer:
80
Step-by-step explanation:
DAB =DAC...........
Answer:
Andrea get for each scooter?
Step-by-step explanation:
Answer:
To rationalize the denominator means to eliminate any radical expressions in the denominator such as square roots and cube roots. The key idea is to multiply the original fraction by an appropriate value, such that after simplification, the denominator no longer contains radicals
Answer:
Step-by-step explanation:
in 6 years we know that it will be half, because that's what "half life" means
in 3 years it's only loses 1/2 * 1/2 = 1/4 of it's mass
in 1 year it's only loses 1/6 * 1/2 = 1/12 of it's mass
from that we can make the formula that
current weight of radium = Wr
Mass of radium orginal = Mo
year of time = t ( must be in years, not days, months or weeks )
Wr = (1/12)*t* Mo