Answer:
B on edge
Step-by-step explanation:
just got it wrong
Answer:
27.76 grams will be present in 500 years
Step-by-step explanation:
The given formula is 
, where A is the value of the substance in t years, and 
is the initial value
∵ The half-life is a substance is 375 years
- Substitute A by 
and t by 375 to find the value of k
∴ 
- Divide both sides by
∴ 
- Insert ㏑ in both sides
∴ ㏑( 
) = ㏑ ( 
)
- Remember ㏑ ( 
) = n
∵ ㏑ ( ) = 375 k
∴ ㏑( ) = 375 k
- Divide both sides by 375
∴ k ≈ -0.00185
∴ 
∵ 70 grams is present now
- That means the initial value is 70 grams
∴ = 70
∵ The time is 500 years
∴ t = 500
- Substitute the values of and t in the formula
∵ 
∴ A = 27.76
∴ 27.76 grams will be present in 500 years
Half life means only half of matter is left, which means half is decayed/radiated.
Formula for half life is
t/2 = [(elapsed time)*(log2)]/[log(beginning amount/ending amount)]
1. t/2 = [(10)*(log2)]/[log(100/76.1)] = 25.378 minutes.
t/2 = [10 * 0.301]/[log 1.314] = [3.01]/[0.1186] = 25.378
2. 53.12 = [(T)*(log2)]/[log(15/4)], on solving we get, T = 101.29 days
53.12 = [T * 0.301]/[log 3.75] = [0.301 * T]/[0.574],
T = [53.12 * 0.574]/[0.301] = [30.49]/[0.301] = 101.29<span />
Answer:
100 degrees
Step-by-step explanation:
because if it was in the middle i would of been 90 degrees.
This expression is not factorable which means the answer is 8x+7
