1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
LuckyWell [14K]
3 years ago
11

Situation:

Mathematics
1 answer:
FromTheMoon [43]3 years ago
4 0

Answer:

5.6 days

Step-by-step explanation:

We are given;

Initial Mass; N_o = 25 g

Mass at time(t); N_t = 25/2 = 12.5 (I divide by 2 because we are dealing with half life)

k = 0.1229

Formula is given as;

N_t = N_o•e^(-kt)

Plugging in the relevant values;

12.5 = 25 × e^(-0.1229t)

e^(-0.1229t) = 12.5/25

e^(-0.1229t) = 0.5

(-0.1229t) = In 0.5

-0.1229t = -0.6931

t = -0.6931/-0.1229

t = 5.6 days

You might be interested in
How much grain can this container hold?
ludmilkaskok [199]

Answer:

953.78 in^3 of grain.

Step-by-step explanation:

The volume of a cylinder = π r^2 h.

For this cylinder r =  radius of the base = 9/2

= 4.5 in  and the height h = 15 in

So the volume is 3.14 * 4.5^2 * 15

= 953.78 in^3.

8 0
3 years ago
Read 2 more answers
PLEASE HELP ME. NO PHONY ANSWERS TY, ANSWER IF YOUR 100% RIGHT!
Ksivusya [100]

The relative frequency of female mathematics majors will be 0.5142.

<h3>How to find the relative frequency?</h3>

The proportion of the examined subgroup's value to the overall account is known as relative frequency.

A sample of 317 students at a university is surveyed.

The students are classified according to gender (“female” or “male”).

The table is given below.

Then the relative frequency of female mathematics majors will be

⇒ 36 / (36 + 34)

⇒ 36 / 70

⇒ 0.5142

Learn more about conditional relative frequency here:

brainly.com/question/8358304

#SPJ1

8 0
1 year ago
A line passes through the point (–2, 7) and has a slope of –5. What is the value of a if the point (a, 2) is also on the line?
Andre45 [30]
To be honest I’m not sure but I believe it’s -7 if there’s anymore information please attach it along with your question
6 0
3 years ago
Read 2 more answers
A line that includes the points (-2,-7) and (-3, p) has a slope of -6. what is the value of p
MrRissso [65]

Answer:

p=-1

Step-by-step explanation:

y-y1=m(x-x1)

-7-p=-6(-2+3)

-7-p=-6

-p=1

p=-1

5 0
3 years ago
Keiko has a total of $ 5200 comma which she has invested in two accounts. The larger account is $ 900 greater than the smaller a
Ilia_Sergeevich [38]

Keiko has a total of $5200

x is the amount of money in larger account

y is the amount of money in smaller account

x - y = $900

and x + y = $5200

<u>This creates two simultaneous equations:</u>

x - y = $900 ... (i)

x + y = $5200 ... (ii)

Adding (i) and (ii) :

2x = $6100 , x = $3050

y = x - $900 = $3050 - $900 = $2150

The amount of money in larger account (x) = $3050

The amount of money in smaller account (y) = $2150

8 0
3 years ago
Other questions:
  • Ellen has a bag with 3 red marbles and 2 blue marbles in it. She is going to randomly draw a marble from the bag 300 times, putt
    7·2 answers
  • Factor k2 - 81. I would love it if someone could help me
    8·2 answers
  • Joanne had $115 to spend at the mall. She spent 23% of that money on a shirt. How much did Joanne spend on the shirt?
    7·1 answer
  • An elevator can hold a maximum of 1,500 pounds. Eight people need to use the elevator. Bill had some
    10·1 answer
  • Mr. Inahurry sold his house for $27,000, which is a 10% loss over what he originally paid for it. What did he pay for the house
    11·1 answer
  • Answer the following questions CORRECTLY I will know if this is wrong. I WILL REPORT ANY INCORRECT ANSWERS!
    8·2 answers
  • 1. Sharon deposits $6000 into an account with a 2.4% interest rate that is compounded monthly. How much will she have next year?
    12·1 answer
  • What is the price paid for a 60% pair of jeans after a 35% discount
    14·2 answers
  • John cuts a 19 in. rope into 3 pieces. The first piece is 4 in shorter than the second. The third is 2 less than three times the
    5·2 answers
  • A boat is heading towards a lighthouse, whose beacon-light is 136 feet above the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!