4) A radioactive material decays at a rate of 40% per hour.
a) If we start with 80 grams of the substance, can you find a fomula that models this rate
of decay?
b) How much will be remaining at the end of 6 hours?
Pls help show work

Answers

Answer 1
Answer is a radioactive material decays at a rate of 40%per hour

Related Questions

Of the males surveyed, what proportion selected small T-Shirt size

Answers

Answer:

this question doesn't make sense

You want to buy a new phone that costs $1250. Your cell phone plan allows for 15% off the price of any new phone. How much will you pay?

Answers

Answer:

$1187.5

Step-by-step explanation:

Cost of cellphone =$1250

15 percent of 1250 is =62.5

so,

1250-62.5=1187.5

A cylinder has a radius of 5 inches and height of 20 inches.which is the surface area of the cylinder?
1. 1187 square inches
2. 517 square inches
3. 3077 square inches
4. 785 square inches

Answers

Answer:

4

Step-by-step explanation:

use the formula to get the answer but i got 785.71.

HALP me pzlzzzzzzzzzzzzzz

Answers

Answer:

1 month

Step-by-step explanation:

mark me brainlyest????

What is the average rate of change between x = 10 and x = 30

Answers

Answer:

everyone always asks "where's the toilet?" but no one ever asks "how's the toilet?" :'(

Step-by-step explanation:




Find the area of a rectangle with a base of 5 feet and a height of 9.5
feet. *

Answers

Answer:

47.5 ft^2

Step-by-step explanation:

5x9.5 = 47.5 ft^2

47.5 ft^2 should be it

4400 dollars is placed in an account with an annual interest rate of 7%. To the nearest year, how long will it take for the account value to reach 10100 dollars?

Answers

Answer:

19 years approx

Step-by-step explanation:

Given data

Principal P= $4400

Rate r=7%

Final amount A=$10100

Time t= ???

Let us apply the simple interest expression

A=P(1+rt)

substitute

10100=4400(1+0.07*t)

open bracket

10100=4400+308t

10100-4400=308t

5700=308t

t= 5700/308

t= 18.50

Hence the time is 19 years approx

consider the system of equations
y = 2/3 x + 1
y = x
what is the solution to the system?
A. (0,0)
B. (0,1)
C. (1,1)
D (3,3)

Answers

Answer:

Use your resources wisely

Step-by-step explanation:

Answer:

[tex] \frac{2}{3} x + 1 = x \\ \frac{1}{3} x = 1 \\ x = 3 \\ y = 3[/tex]

X=3,y=3

which answer is correct

Answers

Answer:

The answer is b

Can someone plzzzz help meeee!!!!!

Answers

Answer:

1. Interpret (L): To explain or to give meaning to.

2. Variable: (F) Something that can change or influence the results of an experiment.

3. Observe (I): To notice what occurs during an experiment.

4. Questions (B): The inquiry or problem relating to a topic that can be answered by conducting an experiment.

5. Scientific Method (A): A method of doing research that includes the steps of identifying a problem, gathering data, forming a hypothesis, testing a hypothesis, and drawing a conclusion.

6. Ethical (E): Following the rules of being being fair and honest.

7. Hypothesis (G): An educated guess or reasonable assumption.

8. Research (D): To conduct an investigation into current information about something.

9. Experiment (C): A test or trial performed in order  to discover something.

10.  Conclusion (K): The result or outcome of something.

11. Procedure (H): A sequence of steps involved in performing an experiment.

If this helps, please consider giving a thanks, a good rating, and Brainliest! Thanks!

A college professor's compensation package includes
$350-per-month health insurance plan, the total cost a $45-per-month life
insurance plan, and a salary of $65,000 per year. What is the yearly value of
the compensation package?
A. $69,740
B. $64,605
C. $65,395
D. $60,260

Answers

its c because you have to add all those numbers and it equals c

what is the degree of angle YQR​

Answers

Answer: Angle is 3

Step-by-step explanation:

16x - 27 = 5x + 6

-5x           -5x

______________

11x - 27 = 6

     + 27 +27

___________

11x = 33

__    __

11      11

x = 3

4. Jessica is saving money to buy a phone that costs $415. She already has $85 saved. She mows
lawns to make extra money. She charges $15 per lawn that she mows. Let n be the number
of lawns she needs to mow to have enough money saved to buy the phone.
Set up and solve an equation to find the value of n.

Answers

Answer:

15n = 330

Value of n(number of lawns) = 22

Step-by-step explanation:

She has already saved $85 which means the amount of money she needs left will be

=$415 - $85

= $330

Now n represents the number of lawns she needs to mow. She earns $15 per lawn, so she needs to multiply the cost of each lawn by the number of lawns (n) and equal it to the money she needs. This is how the equation will turn out.

15n = 330

To go further, divide both sides by 15 to get the number of lawns she has to mow.

[tex]\frac{15n}{15} =\frac{330}{15}[/tex]

n = 22

∴ She needs to mow 22 lawns to get the amount of money she needs.

For each ordered pair determine whether it’s a solution to 5x plus 2y = -1

Answers

Answer:

1,-3

Step-by-step explanation:

What is the slope of the line that contains the points (-2, 7) and (2, 3)?
A. 4
O
B. 1
o
C. -1
D. -4
SUBMIT

Answers

Answer:

-1

Step-by-step explanation:

We can use the slope formula when given two points

m= ( y2-y1)/(x2-x1)

   = ( 3-7)/(2 - -2)

   = (3-7)/( 2+2)

   = -4/4

    = -1

Which of the following expresses 2.444 as a fraction in simplest form?

A. 2 1/4
B. 2 2/5
C. 2 11/25
D. 2 4/9

Answers

Answer: C. 2 11/25

Step-by-step explanation:

Help I only have about 25 minutes left to finish this. I risk failing if I don't get this answered. I have 4 more questions after this. HELP PLZ. This is Slope Intercept form still. I will award 100 pts again

Answers

Answer:

y = 6x - 20

Step-by-step explanation:

Perpendicular slope = 6

(3, -2)

y - y1 = m(x - x1)

y + 2 = 6(x - 3)

y + 2 = 6x - 18

y = 6x - 20

Answer:

Solution given:

equation of a line is:

y=-⅛x+4.......[1]

Comparing above equation with y=mx+c

we get

slope [m]=-⅛

let slope of another line is M

since the Lines are perpendicular

so m ×M=-1

we get

M=8

again

the another line passes through(x1,y1) (3,-2)

Equation of another line becomes:

(y-y1)=m2(x-x1)

(y+2)=8(x-3)

y+2=8x-24

8x-y=24+2

8x-y=26

[tex] \frac{8x}{26} - \frac{y}{26} = 1[/tex]

[tex] \frac{4x}{13} - \frac{y}{26} = 1[/tex]

is a required equation of a line in slope intercept form.

If y varies directly as x, if y = 8 when x = 4, find y when x = 48

Answers

y=96 see explanation in attached photo

Find the value of x. Write your answer in simplest form.

Answers

Answer is: 10
See the workup in photo below.

Work out the reciprocal of 0.125

Answers

Answer:

The right answer is 8 hope I helped

Many ATM machines in Las Vegas casinos charge a $6 fee each time a person withdraws money. If Adam used the ATM 3 times last Saturday at the Bellagio in Las Vegas, how much money was taken out of his checking account in ATM fees?

Answers

Answer:

$18

Step-by-step explanation:

Michael's lawn mower had 3/8 of a gallon of gasoline in the tank. He started mowing and used all of the gasoline. He put 4/10 of a gallon of gasoline in the tank. After he mowed, 2/4 of a gallon was left in the tank. ​What was the total amount of gasoline Michael used?

Answers

Answer:

11/40 of a gallon

Step-by-step explanation:

The amount of gasoline in the tank of lawn mower = 3/8 of a gallon

Then he put the amount of gasoline in the tank = 4/10 of a gallon

The total amount of gasoline filled in the tank = 3/8 + 4/10

= 3/8 + 2/5

= 15+16/40

= 31/40

The total amount of gasoline filled in the tank = 31/40

The amount of gasoline left in the tank after mowing = 2/4

Total amount of gasoline Michael used = 31/40 - 2/4

= 31-20/40

= 11/40 of a gallon

Alternatively, you can follow this method:

Total amount of gasoline Michael used = 3/8 + (4/10 - 2/4)

= 3/8 + (2/5 - 2/4)

= 3/8 + ( 8-10/20)

= 3/8 + (-2/20)

= 3/8 + (-1/10)

= 3/8 - 1/10

= 30-8/80

= 22/80

= 11/40 of a gallon

Total amount of gasoline Michael used = 11/40 of a gallon

The probability distribution for a random variable x is given in the table Find the probability that X<=20

Answers

probability for X<=20 is 1

what is probability?

the probability is the department of mathematics concerning numerical descriptions of how likely an event is to occur, or how likely it is that a proposition is true. The chance of an event is a number between 0 and 1, in which, roughly speaking, zero indicates the impossibility of the event and 1 shows certainty.

probability = the number of ways of attaining success. the total number of possible results. For instance, the chance of flipping a coin and its being heads is ½, due to the fact there may be 1 way of getting a head and the total number of possible outcomes is two (a head or tail).

Learn more about probability here

https://brainly.com/question/24756209

#SPJ2

PLZ SOMEONE HELP RIGHT AWAY!

10x+2(8x+10)

Answers

2(13x+10) is the answer

Answer:

26x+20

Step-by-step explanation:

is -x^2y^2 + 9x^4y^2 + 5x^2y^3 a monomial binomial or trinomial​

Answers

Answer:

Trinomial

Step-by-step explanation:

when you add like terms you still have 3 sets of different symbols 3= trinomial.

You make $52,000 a year. Your state income tax rate is 2.5%. The state income tax allowance is $1500 per person and you have three allowances. They are yourself, your spouse and one child. How much income tax do you owe?​

Answers

Answer:

1,187.50

Step-by-step explanation:

Answer:

Step-by-step expiation

we know that their is an income tax rate of 2.5%, Since their is more than one person within the household, we will multiple the tax rate by 3

2.5% = 0.025

0.025 x 3 = 0.075

Then we will multiple the tax rate by our principal,

52,000 x 0.075 = 3,900

52,000 - 3,900 = 48,100

This will then give us our answer of $3,900 for the income tax rate that is owed, and as well as their new total income.

Plz help!!!!!!!!!!!!!!!!

Answers

Answer:

b) 95

Step-by-step explanation:

equation:

3 x 30 + 5

solve:

3 x 30 + 5 = 95

WILL MARK BRAINLIEST IF GOTTEN RIGHT!!!!

Answers

Answer:

C both line and point symmetry

Step-by-step explanation:

Find the smallest value of m such that the LCM of m and 34 is 374.

Answers

Answer:

11

first you use a number tree

34 374

/\ /\

2 17 2 187

/\

11 17

express the numbers in prime factors

374=2×11×17

34 =2×17

in finding LCM you use the highest prime factors in this case the highest prime factors are 2, 11 and 17

So m factors are 2 and 11

which means m is 2×11=22

22 in its smallest form is 11

What is the equation for nth term of the geometric sequence-2,8,-32,...?

Answers

Answer:

The last one

Step-by-step explanation:

each following number in the sequence is multiplied by -4, and the first number is -2!

Other Questions
How many groups of 5 can you makewith the 25 shapes PLS HELP DUE SOON WILL MARK BRAINLIEST A store owner asks each person to write "Yes" or "No" on a slip of paper asthey leave, secretly writing down whether they were happy with theirexperience. At the end of the day, the owner selects 12 slips at random andlooks at them. These were the results:yes, yes, yes, no, yes, no, yes, yes, no, yes, no, yesPart 1: Estimate the proportion of all shoppers who were haphy with theirexperience that day. Enter your response as a decimal. Grid is a network of 1. parallels of latitude and meridian of longitude 2.the tropic of cancer and tropic of capricorn 3.the north pole and the south pole 5.5% tax on $20 is $ Which African American group arose to provide protection for residents of urban neighborhoods? Black Panther Party Student Nonviolent Coordinating Committee National Association for the Advancement of Colored People Congress of Racial Equality Pls help due in 5 minutes When does the Southern Hemisphere experience the shortest day (and longest night) of the year? Why? I need help I'll give out 40 points quickly Carolyn spends her income on popular magazines and music CDs. If the price of a CD is four times the price of a magazine and if Carolyn is maximizing her utility, she buys Group of answer choices four times as many CDs as magazines. four times as many magazines as CDs. both goods until the marginal utility of the last magazine purchased is four times the marginal utility of the last CD purchased. both goods until the marginal utility of the last CD purchased is four times the marginal utility of the last magazine purchased. Examine the following quotes about pinball below:Pinball has always kept up with the electronic technology of the twentieth century.Pinball machines were officially banned in New York by Mayor LaGuardia on January 21, 1942.Which one of these quotes could have been included in the article, Pinball: Where Science Meets Fun to support the central idea? In your journal, write your answer, and explain why the sentence you chose supports the central idea. Write what happens when a little boy comes into your castle and takes your stuff. You will rewrite the ending of Jack and the Beanstalk from the point of view of the giant. Use dialogue. Can somebody help me? The length of a living room is 3 feet more than its width. The area of the living room is 270 square feet. Write an equation that represents the area of the living room Please help!!!!!!!!!!!!!!!!!!!!!! What is the difference between nations and nation states?The primary difference between nations and nation states is that nation states are smaller.The primary difference between nations and nation states is that nations have more than one official language.The primary difference between nations and nation states is that nations have more diversity in their populations.The primary difference between nations and nation states is that people in nation states are more loyal to the government. Gracies bill at a restaurant is $15. Sales tax is 6% and she plans to leave a 20% tip (on the total after tax is added). What is the total amount of money shell pay, including tax and tip? i need help the question says in your bible, find examples for each of the four types of figurative language. A. simileB. metaphor C. hyperboleD. personifiction What is the primary reason the body needs nutrients? to aid in new growthto reduce oxygen in the bodyto help wounds heal slowlyto fight bacterial infections Dendritic cells process antigens bydetection.engulfment.immunity.inflammation. What former president of Mexico declared himself president again and unsuccessfully tried to fight off the U.S.? PLEASE HELP!! This is economics/business work. Will give brainliest if correct!!