forbiscameron2000 forbiscameron2000

31-10-2019
Mathematics

contestada

A radioactive substance decays according to

A radioactive substance decays according to class=

Respuesta :

ehigboriamarvelous01 ehigboriamarvelous01

31-10-2019

Answer:554.64 s

Step-by-step explanation:78/250= e^(-0.0021t)

0.312=e^(-0.0021t)

ln0.312= -0.0021t

t= 554.64 s

Answer Link

Otras preguntas

There are 110 teachers and 1320 students at a middle school. What is ratio of teachers to students in simplest form? Select the answer which shows how this rati

For the given equation , find the values of a , b, and c, determine the direction in which the parabola opens and determine the y - intercept . Decide which tab

Give an example of a change to gear or clothing that has had a positive effect on a sport and the athletes involved in that sport

write a formula that will help kayla determine how much shell have to pay if she buys food in bulk lets use t=total price p=price per kilogram

Writing a message imaging you are Tulika. You are going with your mother for the audition today. Your mother has asked you to write a message for your father, w

1) Which value is MOST likely to be the boiling point of the substance at this constant pressure? A) 58°C B) 48°C C) 40°C D) 32 C

which of the values of p and n below would make it not acceptable to use a normal approximation for the binomial distribution? p = 0.46, n = 80 p = 0.46, n = 80

Last week Rachel walked 2 3/5 miles per day on each of the 7 days. During the same week, she also jogged 5 3/4 miles per day on 4 days. What was the total numbe

Quiz Active 1 2 3 9 10 4 5 ол 8 6. BE Environmental factors can influence natural selection because they can increase or decrease O the number of chromosomes in

letter to the friend describing about discipline in about 200 word