When a rock first formed, it contained 48 milligrams of potassium-40. How much potassium-40 would remain after three half-lives?

Answers

Answer 1

Answer:

72

Step-by-step explanation:


Related Questions

Is this a function?
{(-1,3); (-2,-3); (2,0); (0,2)}

Answers

Yes, because the x’s aren’t repeated

what do u think this means “the streets had no love for him.”

Answers

He belongs to the streets but they don’t claim him

Answer:

It means that he belongs to the streets but they don’t claim him

Can you please help me. If you help me i will give you brainliest ( question 2-5)

Answers

Answer:

I have made it in the above picture

64 less than twice Goran's height
use the variable g to represent Goran's height

Answers

Answer:

2g-64

Step-by-step explanation:

The answer would be 2g-64 !

Please I really need help thrid time asking please!

Answers

Letter a is the gym

Answer: A. (3, -4) B. (-3, 2)

Step-by-step explanation:

which is the graph of y=3/4x -3

Answers

Answer:

A

Step-by-step explanation:

the formula y = mx + b is used here

lets look at the formula we were given

y = 3/4x -3

the first number we see, 3/4x is the slope of the line, where 1 = a 45 degree angle towards the NORTH EAST corner from 0, in this case it is less then 1 so it is less steep then 45 degrees, how i remember is that i can plot a point using the numbers the the fraction in reverse and connect a line from 0,0 to that line

4,3 is a point that a line with this slope would cross, but not this line, because it does NOT start at 0,0 , instead it crosses the y-axis lower because we took some of b away, in this case -3, so the line moves down 3, not changing the slope

i hope this makes sence and you are able to use it in multiple problems like this, comment this if you have any questions

take care m8

1. Rewrite the term 22m as a product of 11 and another factor.

2. Rewrite the term 33 as a product of 11 and another factor.

last questionn, and imma yeet

Answers

Sheeesh man that’s a lot of math

The term 22m can be written as a product of 11 and another factor is 11(2m), and the term 33 as 11(3).

What is an expression?

It is defined as the combination of constants and variables with mathematical operators.

It is given that:

The term 22m needs to write as a product of 11 and another factor.

As we can see in the term 22m the number 2 is common ie.

22m = 2(11m)

Or

22m = 11(2m)

The arithmetic operation can be defined as the operation in which we do the addition of numbers, subtraction, multiplication, and division. It has basic four operators that is +, -, ×, and ÷.

Similarly,

33 = 3(11)

Or

33 = 11(3)

Thus, the term 22m can be written as a product of 11 and another factor is 11(2m), and the term 33 as 11(3).

Learn more about the expression here:

brainly.com/question/14083225

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For every 15 students there are 3 teachers in the school. Based on this information, about how many teachers are in a school with 550 students?

Answers

This means for every 5 students there will be 1 teacher so 550/5=110
So answer is 110 teachers

Answer:

110 teachers

Step-by-step explanation:

So 5 students there and will also be there 1 teacher

550 divided by 5 is 110

( 550/5=110 )

PPLLLLLZZZZZ HELP :( PT 2 ILL GIVE U BRAINLIST TO THE FIRST RIGHT ANSWER AND A THANK YOU PLUS U GET POINTS :)

Answers

Answer:

mean: 10.3

median: 10

mode: 12

Step-by-step explanation:

WHOEVER ANSWERS CORRECTLY GETS BRAINIEST!
Han's cell phone plan costs $200 to start. Then there is a $50 charge each month.

a) What is the total cost (start up fee and monthly charge) to use the cell phone plan for 1 month? $

b) What is the total cost for x months?

Answers

Answer:

A) $250 B) 50x+200

Step-by-step explanation: A) 200+50(1)=200+50=250

B) 200+50x=50x+200

There are 2 questions on this assignment that i really need help with

1:
If the total length of all the meteors were distributed equally between each meteor, how long would each one be?
A) 1 1/36 inches
B) 1 1/38 inches
C) 1 1/40 inches
D) 1 1/42 inches

2: A line plot with the lengths of meteors is shown. Two more identical meteor measurements were added so that the total length of all meteors measured is 16 inches. What is the length of each new meteor?

A) 1 inch
B) 1 1/8 inches
C) 1 2/8 inches
D) 1 3/8 inches

Answers

Answer:

A,D

Step-by-step explanation:

For first one ans is A and second is D

if u show work and its correct you will get brainliest if u cant show work plz tell me along with your answer

Answers

Answer:

H

Step-by-step explanation:

Hey There!

So first off the inequality sign has to be facing the 5 because that is the max amount of money he can spend on breakfast so we can immediately eliminate answer choices G and J

The reason the answer is not F is because your not adding b to 1.25

B is equal to the number of breakfasts Anthony can buy

Each breakfast cost $1.25 so it would be

5 is greater than or equal to 1.25b

Answer:

Step-by-step explanation:

b/c the breakfasts are $1.25  you would multiply how many he buys , by that cost,   soo

5 ≥ 1.25 * b

so he can buy 4 breakfasts  1.25 * 4 = 5

this works out fine for the math.  but, for one day .. no breakfast :(

I need this in 4 minutes please help

Answers

Answer:Sure thing, but first what do you need help with and just maybe I will help you with whatever you need help with?

Step-by-step explanation:

Answer:

Ya i think that too

Step-by-step explanation:

There are 2 questions on this assignment that i really need help with

Answers

Answer:

Ok, What are the questions? I can answer in the comments.

Step-by-step explanation:

Answer:

Where are the questions

Step-by-step explanation:

The cost of a long-distance phone call is a function of the length of the call in minutes.

If the costs of the four calls shown in the table are graphed with minutes on the horizontal axis and cost on the vertical axis, what does the slope of the graph represent?
Long-Distance Calls Call in minutes Cost
5 $0.65
10 $1.30
15 $1.95
20 $2.60
A rate of $0.13 per minute
The total cost per call
An average time of 5 minutes between calls
An average of 12.5 minutes per cal

Answers

A) A rate of $0.13 per minute

The slope tells us about A rate of $0.13 per minute.

What is Slope?

A line's slope is determined by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively. Therefore, it is possible to write the change in y coordinate with respect to the change in x coordinate as,

m = Δy/Δx where, m is the slope

Given:

Call in minutes     Cost

      5                     $0.65

     10                     $1.30

     15                     $1.95

     20                    $2.60

So, slope

= ( 1.30- 0.65)/ (10- 5)

= 0.65/5

=0.13

Hence, the slope tells us about A rate of $0.13 per minute.

Learn more about slope here:

https://brainly.com/question/3605446

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PLEASE HELPPP


The following tree diagram represents the possibilities of two spins on a fair spinner

What are the number of outcomes in the sample space?

Answers

Answer:

9 or 12

Step-by-step explanation:

There are 9 possible outcomes in the sample space

Please please please help, I give brainliest to first answer(not random nonsense)

Answers

The answer is 16 :)

please help on this algebra!

Answers

Answer:

A (-12,14)

B (8,8)

C (-12,-8)

D (0,-12)

Answer:

1. -12,14

2. 8,8

3. -12,-8

4. 0,-12

hope this helped;;


Which culture was considered to have the most advanced number system?
O Roman
I Babylonian
O Egyptian

Answers

Answer:

Step-by-step explanation:

The number system in most common use today is the Arabic system. It was first developed by the Hindus and was used as early as the 3rd century BC. The introduction of the symbol 0, used to indicate the positional value of digits was very important.

Answer:

I think its the babylonions

I would really appreciate some help, please!
Lori has $450 in her bank account. She withdraws $20 a month for her gym membership. Construct a linear equation to model Lori’s bank balance for any given month.

Answers

Answer:

y=-20x+450

Step-by-step explanation:

Since Lori has 450$ initially, this can be modeled as our y-intercept of our function, or the b in y=mx+b. Since she's withdrawing 20$ a month to pay for the membership, she's losing 20$, which is why the 20 is negative in the equation. Let x be any amount of months, and y will be the balance of Lori's account at that month x.

Equation: y=20x+450

Use Desmos to graph it

Which unit of measure would go with the following conversion?

1 quart = 2

Answers

Answer:

1 quart = 2 pints

Step-by-step explanation:

Miya has some weekly chores to do at home. In one month, she washed 11 equal-sized loads of towels. She washed a total of 154 towels with t towels in each load.


Write a multiplication equation that can be used to find how many towels were in each load. Solve the equation you wrote. Explain how you solved your equation.

Answers

Answer:

14 towels per load

Step-by-step explanation:

Miya washed 11 equal sized loads of towels. She washed a total of 154 towels.

It is given that the variable, t, amount of towels are in each load.

Set the equation:

Amount of load x amount of towels per load = amount of towels in all

11 * t = 154

Isolate the variable, t. Note the equal sign, what you do to one side, you do to the other. Divide 11 from both sides:

(11t)/11 = (154)/11

t = 154/11

t = 14

14 towels per load is your answer.

~

Answer:

11x=154----> 14 towels for each of the 11 loads

Step-by-step explanation:

11x= 154

11x/11=154/11 Simplify the 154 with 11 on each side.

-Eliminate the number 11 and you should be left with x= 154/11.

-Divide

154÷11= 14

Check Your Work.

11

×14

154

x= 14

Graph the line that represents a proportional relationship between d and t with the property that an increase of 5 units in t corresponds to an increase of 2 units in d.

What is the unit rate of change of d with respect to t? (That is, a change of 1 unit in t will correspond to a change of how many units in d?)


(and i need the points on the graph)


The unit rate is = ?

Answers

Answer:

Make a Line from 0, 0 to 1, 3

Answer: unit rate should be 1:0.4 with 1 being t

Explanation: 2/5 is 0.4 and 5/5 is 1 so for each unit of t there would be 0.4 unit of d

help pls im trying to figure out my money i'm saving for a phone ill give brainliest if u can help. i have $16 rn and on march 12th is the 1st day of allowance which is $5 after the end of that week. ill get $5 every week. how long will it take for me to get $303?
i will give brainliest if you help me. pls help

Answers

Answer:

58 weeks.

Step-by-step explanation:

so 303 - 16 you would have 287$ left to earn, then your going to divide it by 5.

it will take you 58 weeks to get to 303$

Answer:

It will take you about 58 weeks(14 months)  or over one year.  

Step-by-step explanation:

What we Know

you already have $16

the total amount needed is $303

you get $5 dollars every week

How To Get The Answer

1- subtract the total amount needed ($303) from what you already have ($16)

          $303 - $16= $287

2- you have to get $287 more dollars to get to $303

3- in order to find out how long it will take you to get to your goal $303 you will divide $287 by the amount you get weekly.

         287/5= 57.4 (this will round up to 58)

Therefore It will take you about 58 weeks (14 months) to get to $303

Hope this helps!

Find the area of the figure. Round to the nearest tenth if necessary.

A. 12.28 km²
B. 45.18 km²
C. 22.08 km²
D. 18.56 km²

Answers

9514 1404 393

Answer:

  A.  12.28 km²

Step-by-step explanation:

The area of the figure is the sum of the areas of its parts. The area of the triangular part is ...

  A = 1/2bh

  A = 1/2(3 km)(4 km) = 6 km²

__

The area of the semicircular part is ...

  A = 1/2πr²

  A = 1/2(3.14)(2 km)² = 6.28 km²

__

Then the area of the figure is ...

  6 km² + 6.28 km² = 12.28 km²

The circumference of a coin is 25 millimeters.

​Find the diameter of a coin using 3.14 for \piπ.

Answers

You multiple 25 and 3.14 and when you do that you get 78.5
I don’t know if I’m right or not but I got, 78.54 as my answer.

Can someone plz help me im really lost

Answers

35

12 + 25y = 795

12(y + 20) + 25y = 795

12y + 240 + 25y = 795

37y = 795 - 240

37y= 555

y=15

Substitute y= 15 into

x=y + 20
x= 15 + 20
x= 35

T-shirt = 35
Sweatshirt = 15

They brought 35 t shirts
I think the answer is 35 t-shirts

simplify the expression (its pretty easy im checking my work)
5+7 (x+8)

Answers

Answer:

7x+61

Step-by-step explanation:

distribute 7 to the x and 8

5+7x+56

now combine like terms

5+56+7x

your answer

61+7x

7x+61

Step-by-step explanation:

I did this on a test once

A bag contains​ pennies, nickels,​ dimes, and quarters. There are 50 coins in all. Of the​ coins, 10​% are pennies and ​38% are dimes. There are 8 more nickels than pennies. How much money does the bag​ contain?

PLZ HURRY WILL MARK BRAINLIEST

Answers

5 pennies, 13 nickels, 29 dimes, and 3 quarters the total is $4.35

Allie must sell at least 60 gift baskets for the band fund-raiser. She already sold 48 baskets. Enter and solve an inequality to determine how many more baskets Allie must sell for the fund-raiser. Use b for the amount of baskets Allie already sold.
BLANK + BLANK ≥ BLANK

Answers

Answer:

22

Step-by-step explanation:

can you give brainliest?

48 + b >_ 22, hope this helped
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