a mine worker discovers an ore sample containing 500mg of radioactive material. it is discovered that the radioactive material has a half life of 1 day. find the amount of radioactive material in the sample at the beginning of the 7th day.

Answers

Answer 1

Answer:

The miner would have 3 1/2 of radioactive material in the sample at the beginning of the 7th day.

Step-by-step explanation:

hope this helped!

Answer 2
3 1/2 is radioactive hope this helps’

Related Questions

PLEASE HELP WITH ANOTHOR FREAKING IXL

Answers

Answer:

its >

Step-by-step explanation:

when I was in school the bars ment it will become the opposite of the number inside so that means -90 will become 90

Answer:

90>70

Step-by-step explanation:

the ones in the lines r always even

Can someone help me asap on this!!!

Answers

Answer:

3

Step-by-step explanation:

Good Luck

It would be Spinner B

PACK is a rectangle with a perimeter of 40 units. Find the measure of angle O to the nearest degree.

Answers

Answer:

It should be like 45 degrees not sure tho sorry

Step-by-step explanation:

Given the circle shown, what is the radius? Be sure to include units. How did you find it? Explain in complete sentences.

Answers

What’s 27+27 and there’s your answer
The radius is 13.5 cm. To find the radius you have to divide the diameter by 2. 27 divided by 2 equals 13.5.

HELP ASAP
WILL GIVE BRAILIEST

Answers

Answer:B or 540 cubic inches.

Step-by-step explanation:

So, if we multiplied all 3 values using the volume formula, we get 600 cubic inches. And if it says 90%, we multiply .9x600 and get 540 cubic inches.

Answer:

B. 540 cubic inches

Step-by-step explanation:

Let's start with the formula.

[tex]Volume=Length*Width*Height[/tex]

Or:

[tex]V=L*W*H[/tex]

We are given the Length, Width, and Height.

So we just multiply it out:

[tex]12.5*6*8=600[/tex]

The volume is 600 cubic inches

But we aren't done yet:

We now have to find 90% of 60, and we can do that in two ways

Set up a percent proportion:

[tex]\frac{x}{90}=\frac{600}{100}[/tex]

[tex]x=\frac{90*600}{100}[/tex]

[tex]x=540[/tex]

Or we could use benchmark fractions.

To find 90% of 600, we do 600 - (10% of 600)

This is just 600 - 60

540

Aldo solve the equation -3x - 8 = 16. He says the solution is -8.

Which reason justifies her solution?
A) Aldo says that to solve the equation you first divide by -3
and then add 8.
B) Aldo says that to solve the equation you first multiply by 8
and then add -3.
C) Aldo says that to solve the equation you first subtract 8 and
then divide by 2.
D) Aldo says that to solve the equation you first add 8 and then
divide by -3.

Answers

D. Because you have to get the x alone when adding 8 the. dividing by -3 to leave the x alone.

PLEASE HELP NO FAKE ANSWERS PLEASE

Answer the questions to estimate the probability that the Iceblades will win the game.

1. The paired digits 00 to 99 represent 100 shots.

Let 00 to 72 = a shot that is saved. Which digits represent a goal scored? Explain.




Write your answer in the space below.

















2. Each group represents the 5 shots taken by the other team. To win the game, the Iceblades cannot let the other team score any goals.

For a group to be a success, how many of the 5 shots does the goalie need to save?




Write your answer in the space below.

















3. Group 1 is a success. Explain why.




Write your answer in the space below.

















4. In this simulation, which groups are successes? How many successes are there in the 10 groups?




Write your answer in the space below.

















5. Estimate the probability the Iceblades will win the game. Give your answer as a percent.




Write your answer in the space below.

Answers

3 • (2x + 1) • (x + 7
FREE POINTS this is wrong btw 00 to 99 number 1

Help please, due soon need it

Answers

can you get a clearer picture pls

the bottom is to blurry

Frank is going to plant x vegetable seeds in one garden and 4x+7 vegetable seeds in another. How many seeds is going to​ plant?

Answers

Answer: Because Frank is planting x seeds in one and 4x+7 in the other, you need to add both of those together.

x+4x+7= 5x+7

Hope this helped! :3

-Jazzy <3

If Frank is planting b seeds in one and 5b + 10 in the other, the expression showing the total is b + (5b + 10), or 6b + 10 seeds.

Which of the following represents the value of 3 2/5−5/2 ?

Select one:
A. 27/4
B. 4
C. 9/10
D. 1/3

Answers

Answer: C

Step-by-step explanation: 3 2/5 - 5/2

C is the answer, Joel that helped

HELP ME PLEASE !!!!!!

Answers

Answer:

in the explanation

Step-by-step explanation:

rs=2^2+4^2=20cm

sq root of 20=4.472135955 (round down to how much you like, probably 1dp)

qt=4^2+8^2=80cm

sq root of 80= 8.94427191

for the other pic just do [tex]\sqrt{80}[/tex] takeaway [tex]\sqrt{20}[/tex], which is 4.472135955 and round down to how much u like

i do not know what the answers is i need the answer so i can post

Jung-Su's father gave him $144. Jung-Su bought 4 books, each of which cost $9. How much money does Jung-Su have left?

Answers

Answer:

$108

Step-by-step explanation:

9+9+9+9=36

144-36=108

lol

$108 you multiply 4•9=36. Then do 144-36 which equals 108.

please help ill give brainliest

Answers

Answer:

6.93

Step-by-step explanation:

I checked

Answer:

$7 dollars

Step-by-step explanation:

$7 dollars because you'd need 7 more dollars to get the next answer!

Help please, due very soon

Answers

its blurry cant see anything reallly

Answer:

I’ve done this before so the answer is

Step-by-step explanation:

Mary thinks that the "solution" to a system of equations is the point of intersection on the graph. Mike thinks that the "solution" to a system of equations if the ordered pair that makes both equations true. Who is correct?

Answers

The answer is Mary is correct sorry if I’m wrong
Trhhccfcffffffgccggcyccg

Greg earned $340 interest after 5 years at an interest rate of 7%. What was in initial investment?

Answers

7x14=98

340x14=4760

4760 is 98% of his initial investment

48.57 is 1% x 2 is 2%

the answer is 97.14

The correct answe is 97.14

12 points What’s 1+1




Also what’s your favorite Pokémon

( this is a test to see if I can get around the problem thing that deletes your questions) have a nice day!

Answers

Answer:

2

Step-by-step explanation:

are you siruous

Answer: 1+1 is a hard one i had to ask my mom but i think its 2 maby

and my favorite pokemon is dido

find the slope. y - x = -5

Answers

x-y=5 sunduejchwinche

Which ordered pair could be added to the relation below to ensure it continues to be a function?

Answers

Answer:

I think that the answer would be (-7,-1) but i'm not that sure

Step-by-step explanation:

Suppose Year 0 = 2010

1) What is the slope of this trendline? Explain the significance of the slope in the context of the model. 2) What is the y-intercept of this trendline? Explain the significance of the y-intercept in the context of the model. 3) Predict what the outcome will be 50 years from now. Is making a prediction 50 years into the future appropriate? Why or why not?

Answers

sorry i can’t help with the 50 years one or the questions to slope and y-intercept but the slope is 5 and the y-int is (0,50)

Sierra wants to buy a new bike. The bike she likes is on sale for 40% off its original price. Her parents agree to pay for $75 of the cost. If the original cost of the bike is $200, how much money will Sierra have to save herself? (No sales tax is charged.)

A.
$45


B.
$80


C.
$75


D.
$125

Answers

A) 45

Explanation:
$200 (original cost) x 40% = $80
$200 - $80 (40% off) = $120
Parents paying $75 : $120-75 = $45

15% of the parking spaces at a school are reserved. The school has 12 reserved spaces. How many parking spaces are there in total?

Answers

Answer: 76

Step-by-step explanation:

well, we know that 15% of the X is 12, so we first use 6 15%, which is 90% 6X12=72. next, we would use 12/3, which is 4. 72+4=76.

Answer:

80

Step-by-step explanation:

12/x = 15/100

cross multiply

1200/15x; 1200/15 =80

x=80

here is 19 and 20 thank yall

Answers

Answer:

19: The difference between the temperature in Fair Banks and Barlow is 3°F

20: -13°F, -10°F, 15°F, 24°F.

Step-by-step explanation:

I'm assuming that by "compare", it means to find the difference between temperatures in question 19. If it means something else, let me know and I'll try and help you find it.

Answer:

for 19 is the difference between the temperature in Fairbanks and Barlow is 3°F and for 20 is -13°F, -10°F, 15°F, 24°F.

it means to find the difference between temperatures in question 19 i guess that helps. 0-o

Step-by-step explanation:

Complete the table and graph the function.

Answers

Answer:

Step-by-step explanation:

You go to the negatives

The value of 3(2f+3) when f= 5

Answers

Answer:

39

Step-by-step explanation:

2x5=10

10+3=13

13x3=39

Answer:

39

Step-by-step explanation:

First since f=5 , you should get rid of the f

2 * 5 = 10

so now the equation is 3(10+3)

Then you add the numbers in the parentheses

10 + 3 = 13

Then multiply it by 3

3 * 13 = 39

39 is your answer

Please help ASAP thank you

Answers

Answer:

R= 1 1/12 or 13/12 I think that's the simplest form

Answer:

4[tex]\frac{7}{12}[/tex]

Step-by-step explanation:

Give make the fractions improper first!

3[tex]\frac{1}{4}[/tex] -> [tex]\frac{13}{4}[/tex]

1[tex]\frac{1}{3}[/tex] -> [tex]\frac{4}{3}[/tex]

Now give them the same denominator, making it easy to solve.

[tex]\frac{13(3)}{4(3)}[/tex] -> [tex]\frac{39}{12}[/tex]

[tex]\frac{4(4)}{3(4)}[/tex] - >[tex]\frac{16}{12}[/tex]

now add!

[tex]\frac{55}{12}[/tex] - > 4[tex]\frac{7}{12}[/tex]

Please help ASAP!
Evaluate the expression : 5/9 ( F - 32) when F = 122
1. 50
2. 60
3. 40
4. 20

Answers

1.50 5/9(122-32)=5/9(90)= 50

Answer: 50

Step-by-step explanation:

5/9 (f-32) if f = 122 you take 122 and subtract 32 because of order of operations and now you have 5/9 (90) and then you multiply 5/9 times 90 and you get 50

HELP ME WITH THIS ONE PROBLEM (2/2)

Answers

Equal then Together then just solve so x is 15

please help with this question! will give brainleist

Answers

Answer:

28%

Step-by-step explanation:

It's D

Answer:

D. 28%

Step-by-step explanation:

25 - 18 = 7

7 people failed the test.

7/25 = 0.28 = 28%

28% of students did not pass the test.

Help for brainiest and extra points !!!

Answers

Answer:

1. A, because 4(2)=8. 2 is the x.

2. B, because 2.5 x 4 = 10, which makes sense.

3. B, because 5x is the amount that you want to put into equal parts and the 3 is just being subtracted from the amount of the equal parts from the 5x.

4. C.

Step-by-step explanation:

Answer:

1. correct

2. B

3. D

4. i don't know number 4 :'(

Step-by-step explanation:

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