Answer:
22.5 feet
Step-by-step explanation:
Answer:
no because the parenthesizes means your multiplying
Step-by-step explanation:
10 grams Vanadium will be left after 48 days
Further explanation:
Half-life is the time after which the chemical is reduced to half.
The reaming mass after half life is given by:

The formula for calculating the remaining mass after given time period is:

Here n is the number of half lives passed
Now,
Given
Mass=80 grams
Time= 48 days
Half-life = 16 days
The number of half lives will be:

Putting the values of n and mass in the formula

10 grams Vanadium will be left after 48 days
Keywords: Half-life, radioactive
Learn more about half-life calculation at:
#LearnwithBrainly
Answer:
90
Step-by-step explanation:
90
Answer:
24 = questions on test
Step-by-step explanation:
Questions answered correctly = questions on test * percent answered correctly
We know that she answered 18 correctly and that 75% were answered correctly
Substitute this information into the equation
18 = questions on test *.75
Divide by .75 on each side
18/.75 = questions on test *.75/.75
24 = questions on test