Answer:
D. y = 375x
Step-by-step explanation:
Looking at the table, we can see that for every 1 can of paint, the area painted increase by 375 square feet. 375 represents our slope. If there were 0 cans of paint, then there would be no area painted, which means that the y-intercept would be 0. The only equation that represents those two values is D.
Answer:
19.3 years
Step-by-step explanation:
Given that the initial mass of a sample of Element X is 100 grams,
The formula is given as:
N(t) = No × (1/2) ^t/t½
Element X is a radioactive isotope such that every 30 years, its mass decreases by half.
N(t) = Mass after time (t)
No = Initial mass = 100 grams
t½ = Half life = 30 grams
N(t) = 100 × (1/2) ^t/30
How long would it be until the mass of the sample reached 64 grams, to the nearest tenth of a year?
This means we are to find the time
N(t) = 100 × (1/2) ^t/30
N(t) = 64 grams
64 = 100(1/2)^t/30
Divide both sides by 100
64/100 = 100(1/2)^t/30/100
0.64 = (1/2)^t/30
Take the Log of both sides
log 0.64 = log (1/2)^t/30
log 0.64 = t/30(1/2)
t = 19.315685693242 years
Approximately = 19.3 years
135,634,554.....the 3 is in the 10 millions place
so the 3 is 30,000,000
Answer:
2.9802322e+17
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
is the answer as there is no repeated x for example if the x is repeated again its not a function
