Answer these questions for me please i dont have time to go back and figure this out rn

Answer These Questions For Me Please I Dont Have Time To Go Back And Figure This Out Rn

Answers

Answer 1

Answer:

Step-by-step explanation:

in 6 years we know that it will be half,  because that's what "half life" means

in 3 years it's only  loses  1/2 * 1/2 = 1/4 of it's mass

in 1 year it's only loses 1/6 * 1/2 = 1/12 of it's mass

from that we can make the formula that

current weight of radium  = Wr

Mass of radium orginal = Mo

year of time = t   ( must be in years, not days, months or weeks )

Wr = (1/12)*t* Mo


Related Questions

What is the absolute value of negative 1/2

Answers

Answer:

The absolute value of negative 1/2 is  1/2

Step-by-step explanation:

The absolute value of a number is the positive form of the number

Javier loves flying kites. He flies his kite for 1 hour on Monday, 2 hours on Tuesday, 4 hours on Wednesday, and 3 hours on Thursday. How many more hours did Javier fly his kite on Wednesday and Thursday than Monday and Tuesday?

Answers

Answer:

4 more hours

Step-by-step explanation:

wednesday+thursday=7

monday+tuesday=3

7-3=4

the amount of water in a bottle is reduced by 85% to 120 millimeters. how much water was originally in the bottle?

Answers

A percentage is a way to describe a part of a whole. The amount of water in the bottle originally is 800 mm.

What are Percentages?

A percentage is a way to describe a part of a whole. such as the fraction ¼ can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

Let the water in the bottle at the very initial be x.

Given that after reduction the amount of water in the bottle is 120 millimetres, also, the water is reduced by 85%, therefore, the amount of water that will be in the bottle is 15% of the original.

Water in the bottle = 15% of x

120 mm = 0.15 × x

x = 800 mm

Hence, the amount of water in the bottle originally is 800 mm.

Learn more about Percentages:

https://brainly.com/question/6972121

#SPJ1

FIND THE DOMAIN AND RANGE

Answers

Answer:

B

Step-by-step explanation:

3tan² 45° - sin² 60 - cot 30 + sec² 45°​

Answers

Answer:

[tex]4.25-\sqrt{3}.[/tex]

Step-by-step explanation:

1) tan45=1; sin60=√3/2; cot30=√3; sec45=√2, then

2) 3-0.75-√3+2=4.25-√3 (it is ≈2.5179492).

varies directly with the number of
The doliar amount d that Megan earns
hours h that she works. In her last paycheck, she earned $148.50 working
18 hours.
If her next paycheck is $90.75, how many hours did she work?

Answers

Step-by-step explanation:

Let p and h represent pay and hours worked respectively,

p = kh

k = p/h = 148.5/18 = 8.25

p= 8.25h

90.75 = 8.25h

h = 11 hours.

Hope it helps! :)

How many sets of one eighths are in 3/4

Answers

Answer:

6

Divide the fractions.

3 / 1 = 3

4 / 8 = 2

Use the numerator as a multiplicand.

2 × 3 = 6

Pls help me!!!!!!!!!!’

Answers

Answer:

m<6 = 119°

Step-by-step explanation:

Two lines are parallel with each along a line.

m<4 and m<6 are supplementary angles which both angles add up to 180°.

m<4 + m<6 = 180°

61° + m<6 = 180°

m<6 = 180° - 61°

m<6 = 119°

Answer:

Step-by-step explanation:

m<6 + 61 = 180

m<6 = 139

There are 10 girls in an athletics club.
e ratio of girls to boys is 5:3.
w many boys are there?

Answers

Answer:

6

Step-by-step explanation:

There are 10 girls in an athletics club.

e ratio of girls to boys is 5:3.

w many boys are there?

we can solve with an equation

10 : x = 5 : 3

x = 10 * 3 : 5

x = 30 : 5

x = 6

---------------

Use unit price to decide which pizza deal is the better buy. Explain.

Deal A: 30 slices for $75
OR
Deal B: 18 slices for $48

please explain your answer!!

Answers

Answer:

1. 0.4

2. 0.375

Step-by-step explanation:

All you gotta do is find how much does it cost for each slice for example 30/75=0.4 and decide which one is better

Use the drawing tools to form the correct answer on the graph. Plot function f on the graph. f(x)= 3, -9

Answers

The equation of the function f  with solution 3, -9 is x²+6x-27 and the graph of this equation with the use of drawing tools is attached below.

What is the definition of a Function?

A function assigns the value of each element of one set to the other specific element of another set.

A function has to be plot which has the value of f(x) as 3 and -9. Here, 3 and -9 are the solution of the function. Thus,

x=3

x-3=0

The second solution is,

x=-9

x+9=0

Multiply both factor for the function as,

f(x)=(x-3)(x+9)

f(x)=x²+9x-3x-27

f(x)=x²+6x-27

This is the required function. The graph of this function is attached below.

Thus, the equation of the function f  with solution 3, -9 is x²+6x-27 and the graph of this equation with the use of drawing tools is attached below.

Learn more about Function here:

https://brainly.com/question/5245372

#SPJ1

izzes
Two angles are complementary. The smaller angle is 24° less than the larger angle. Find the measures of
both angles.

Answers

Answer:

The bigger angle is 57 degrees

The smaller angle is 33 degrees

Step-by-step explanation:

complimentary is that two angles will add up to 90 degrees

Lets say one angle is x, and the other is y.

the smaller angle is x, so it is be x-24degrees

x+(x-24)=90

2x=114

x=57 degrees

y=33degrees

Consider the questions below:

Are the line parallel or perpendicular?

Answers

Answer: Parallel
i did this yesterday

[tex]\Large\textsc{Answer\::}[/tex]

ParallelPerpendicular

[tex]\Large\textsc{\textbf{Calculations\::}}[/tex]

First , notice that the equation of the second line , 6x=3y+5 , is not written in the same form as y=2x , so determining the slope is hard .

To determine the slope , we need to convert the first equation into slope intercept form .

Subtract 6x on both sides :

0 = 3y+5-6x

Now , subtract 3y on both sides :

-3y=-6x+5

Divide by -3 on both sides :

y=-6/-3x+5/-3

Which simplifies to :

y=2x-5/3 (remember , a negative divided by a negative results in a positive)

Put both equations together :

y=2x and y=2x-5/3

Notice that the slopes are the same . This indicates that the lines are parallel .

Now let's focus on the second maths problem :

Consider the equations below .

x=-4 and y=-2

Are the lines parallel or perpendicular?

The  slope of the first line is undefined , and the slope of the second line is zero .

Lines with undefined slopes are vertical , and lines with slopes of zero are horizontal .

Here's something you may have recalled from your Geometry class :

Is a vertical line parallel or perpendicular to a horizontal line ?

The ans is : perpendicular .

Henceforth , the lines x = -4 and y = -2 are perpendicular to each other .

[tex]\footnotesize{\texttt{hope helpful~}[/tex]

Which was a factor in explosive population growth in cities? Please help

Answers

Answer:

b

Step-by-step explanation:

A dinner plate has a circumference of 100.48 cm. What is the area of the dinner plate? Use 7 = 3.14.
Circumference = 2914 Area Пr2
A. 1,607,68 cm2
B. 200.96 cm?
C. 803.84 cm?
D. 50.24 cm

Answers

Answer:

803.84, or C.

Step-by-step explanation:

If we know the circumference then we can use that to find the radius!

-

(π =pi)

Area of a circle formula: π · r^2

-

Let us plug in the circumference into the formula (not the area formula, the circumference one!)

c=2πr

100.48=2πr - 2*3.14 =6.28

100.48=6.28r

divide both sides by 6.28!
r= 16

Now, we plug that in the area formula.

π · r^2

3.14 * 16^2

3.14 * 256 =

803.84

A rectangular prism and its net are shown below.
(All lengths are in yards.)

Answers

If the dimension of the rectangular prism will be 11 by 8 by 4. Then the volume of the rectangular prism will be 352 cubic yards.

What is a rectangular prism?

A rectangular prism is a closed solid that has two parallel rectangular bases connected by a rectangle surface.

A rectangular prism and its net are shown below.

Then the volume of the rectangular prism will be

Volume = LWH

where

Width (W) = 8 yd

Length (L) = 11 yd

Height (H) = 4 yd

Then the volume will be

Volume = 11 × 8 × 4

Volume = 352 yd³

Then the volume of the rectangular prism will be 352 cubic yards.

More about the rectangular prism link is given below.

https://brainly.com/question/12649592

#SPJ1

Find -5B.
Please help

Answers

Answer:

[tex]-5B = \begin{bmatrix}-15&10\\ 20&40\end{bmatrix}[/tex]

Step-by-step explanation:

[tex]B=\begin{bmatrix}3&-2\\ -4&-8\end{bmatrix}[/tex]

[tex]\Longrightarrow -5B = -5 \times\begin{bmatrix}3&-2\\ -4&-8\end{bmatrix}[/tex]

[tex]\Longrightarrow -5B = \begin{bmatrix}-5 \times3&-5 \times-2\\ -5 \times-4&-5 \times-8\end{bmatrix}[/tex]

[tex]\Longrightarrow -5B = \begin{bmatrix}-15&10\\ 20&40\end{bmatrix}[/tex]

The cost of downloading a movie from a website is $4.99. Which equation can be used to find c, the cost in dollars of downloading n movies? A. c = 4.99 +n = B. n = 4.990 C. n = 4.99 +c D. c = = 4.99n​

Answers

Answer:- The answer is letter B, c=1.75n

Step-by-step explanation: Hope this helps.

A prism is completely filled with 540 cubes that have edge length of 13 cm. What is the volume of the prism? Enter your answer in the box.

Answers

Answer:

vp=1186380cm^3

Step-by-step explanation:

Number of cubes =540length of one edge=13cm[tex]volume \: of \: a \: cube = {l}^{3} \\ v = {(13cm)}^{3} \\ = {2197cm}^{3} \\ [/tex][tex]volume \: of \: prism \: = volume \: of \: cube \: \times \: nuber \: of \: cubes \\ volume \: of \: prism = ( {2197cm}^{3} )(540) \\ = 1186380 {cm}^{3} = 1.1864 {m}^{3} [/tex]

Answer:

Step-by-step explanation: hi it’

complete this statement: A plolygon with all sides the same length is said to be

Answers

Answer:

it is said to be a regular polygon.

Step-by-step explanation:

A regular polygon is a polygon that has all angles of the same measure and all sides of the same length.

if lin has already run 19.6 miles of the marathon how many miles does she have left

Answers

Answer:

6.6 miles she has to run

Step-by-step explanation:

the marathon actual race distance is 26.2 now that Lin has already ran 19.6 miles so now we should subtract this two decimal numbers so that were get 6.6

Jo is pouring a driveway and he mixes cement and water in the correct ratio. X represents the cement and y represents the water. The graph includes (54,120) (108, 240) (162, 360) (216, 480). He says (63, 140) is included in the relationship of the graph. Is he correct?

Answers

Answer:

Yes.

Step-by-step explanation:

y/x = 2.22.....  for all the 4 points given.

The graph is a straight line with slope 2.22....

140/63 = 2.2222... also so this is included in the realtionship

PLEASE HELP
Describe how the variable h and the variable k of the general formula for a cube root function effects the graph. The general formula is y=a^3sqrt x-h+k

Answers

Answer: h = left or right, k = up or down

Step-by-step explanation:

h determines if the function is shifted left or right and k determines if the graph is shifted up or down

5th grade pls help

Cy bought a laptop computer, a printer, and a router. Cy used a $35 coupon to make the purchase. He wrote (1,415.00 + 277.50 + 44.95) - 35 to show how he can calculate the final cost, not including sales tax. Write an expression that can be used to find the total price of the items he bought before sales tax and the coupon.

Answers

Answer:

1702.45

Step-by-step explanation:

your welcome

1737.45 coupon not included

1702.45? That’s the answer

And environmental group would like a representative sample of its members to complete a survey. Which method gives the most representative sample?
a. Survey all the people who attended the month club meeting.
b. Survey every third person from the list of group members.
c. Survey the first five people who joined the club.
d. Survey every other person that went on the weekend nature walk.

Answers

Answer:

D.

Step-by-step explanation:

When you survey every 3rd person you will use that as a good sample for the survey. Hope this helps!

If log(16)=s, what is the value of 2/3 log(6400) - 1/3 log(1600) in terms of s?

Answers

The value of the given expression in terms of s will be [(s + 0.602)/3].

What is a logarithm?

Exponents can also be written as logarithms. A number base logarithm is similar to some other number. It is the exact inverse of the exponent expression.

If [tex]\log(16) = s[/tex]

Then the value of the given expression in terms of s is given below.

[tex]\dfrac{2}{3} \times \log(6400) - \dfrac{1}{3} \times \log(1600)[/tex]

We know the property of the logarithm.

[tex]\log 100 = 2[/tex]

Then we have

[tex]\rm \rightarrow \dfrac{2}{3} \times \log(6400) - \dfrac{1}{3} \times \log(1600)\\\\\\\rightarrow \dfrac{2}{3} \times ( \log 16 + \log 4 + \log 100 ) - \dfrac{1}{3} \times (\log 16 + \log 100)\\\\\\\rightarrow \dfrac{2}{3} \times (s + 0.602+2) - \dfrac{1}{3} \times (s + 2)\\\\\\\rightarrow \dfrac{2}{3} \times (s + 2.602 ) - \dfrac{1}{3} \times (s + 2)\\\\\\\rightarrow \dfrac{2 (s + 2.602) - (s - 2)}{3} \\\\\\\rightarrow \dfrac{s + 0.602}{3}[/tex]

More about the logarithm link is given below.

https://brainly.com/question/7302008

#SPJ1

If a₁ = 2 and an = an-1 +5 then find the value of a5. for recursive sequence

Answers

Answer:

[tex]a_{5} = 22[/tex].

Step-by-step explanation:

In this recursive sequence, the value of the first term [tex]a_{1} = 2[/tex] is stated explicitly. The value of every other term of this sequence is given as an expression of the previous term.

For example, the value of the term [tex]a_{2}[/tex] ([tex]n = 2[/tex]) is given in terms of the value of [tex]a_{1}[/tex]:

[tex]\begin{aligned}a_{2} &= a_{(2 - 1)} + 5 \\ &= a_{1} + 5\end{aligned}[/tex].

Likewise, the value of [tex]a_{3}[/tex] ([tex]n = 3[/tex]) would be:

[tex]\begin{aligned}a_{3} &= a_{(3 - 1)} + 5 \\ &= a_{2} + 5 \\ &= (a_{(2-1)}+5) + 5 \\ &= (a_{1} + 5) + 5 \\ &= a_{1} + 2 \times 5 \\ &= a_{1} + (3 - 1) \times 5\end{aligned}[/tex].

In general, the value of [tex]a_{n}[/tex] (for integer [tex]n \ge 1[/tex]) would be:

[tex]\begin{aligned} a_{n} &= a_{1} + (n - 1) \times 5 \\ &= 2 + (n - 1) \times 5\end{aligned}[/tex].

Therefore, the value of [tex]a_{5}[/tex] ([tex]n = 5[/tex]) would be:

[tex]\begin{aligned}a_{5} &= a_{1} + (5 - 1) \times 5 \\ &= 2 + (5 - 1) \times 5 \\ &= 22\end{aligned}[/tex].

a is 25% of b
b is 30% of c.
Write the ratio a:b:c
Give your ratio in its simplest form.

Answers

Answer:

40a : 10b : 3c

Step-by-step explanation:

We can write this information more mathematically by saying:

[tex]a = \frac{1}{4} b[/tex]

[tex]b= \frac{3}{10} c[/tex]

This can be written as ratios as well by making them all integers so:

4a : b

10b : 3c

By making the b's in both equations the same, we can link all the ratios together so:

40a : 10b

10b : 3c

So,

40a : 10b : 3c

Which of the following package deals is a better buy according to unit price?
$5.73 for 3 cans
$11.44 for 8 cans
$13.55 for 5 cans
$14.28 for 6 cans

Answers

Do you have a picture?
C because your paying less

Determine the value of x.
is it 20?

Answers

Answer:

X = 20

Step-by-step explanation:

The two angles are vertical.

62 = (2 + 3x)

60 = 3x

60/3 =

20

You were correct

X=20


The two angles are vertical
62=(2+3x)
60=3x
60/3=20
Other Questions
sarah burned 280 calories running 20 minutes the next day sarah burned 490 calories for running 35 minutes write an equation that represents this relationship What feature do anticyclonescreate at Earth's surface as theyspiral outward?A. areas of low pressureB. stationary frontsC. areas of high pressureD. occluded fronts On a standardized exam, the scores are normally distributed with a mean of 21 and a standard deviation of 4. find the z-score of a person who scored 13 on the exam. simplify........[tex] {4x}^{2} {y}^{3} \times 3x {y}^{2} [/tex] What is electromagnetic waves Solve the system of equations:3x-y= 175x + 3y = 5A.(-4,5)B.(4,-5) C.(-4,-5)D.(4,5) please help me with this im lost HELP QUICK IN 3 MINWhich of the following statements incorrectly describes nonspecific external immune responses?A) The skin is a physical barrier and keeps pathogens from entering the body.B) Nonspecific external immune responses are the second immune response against pathogens.C) All of the statements correctly describe nonspecific external immune responses.D) Mucus is a mechanical barrier where enzymes are used to kill pathogens. Given the functions f(x) = log2(4x) and g(x) = 4x 3, which of the following statements is true? Both f(x) and g(x) have a common domain on the interval (0, ). Both f(x) and g(x) have the same range of (, 0]. Both f(x) and g(x) have the same x-intercept of (2, 0). Both f(x) and g(x) increase on the interval of (4 , ). No one believes more firmly than Comrade Napoleon that all animals are equal. He would be only too happy to let you make your decisions for yourselves. But sometimes you might make the wrong decisions, comrades, and then where should we be NEED THIS QUICK Karen earns $28,000 per year as a fashion consultant. She has personal exemptions that total $2,100. Use the table below to determine how much will be withheld annually for state income taxes.Annual Gross Pay Tax RateFirst $1,000 1.5%Next $2,000 3%Next $2,000 4.5%Over $5,000 5%Karen earns $28,000 per year as a fashion consultant. She has personal exemptions that total $2,100. Use the table below to determine how much will be withheld annually for state income taxes.Annual Gross Pay Tax RateFirst $1,000 1.5%Next $2,000 3%Next $2,000 4.5%Over $5,000 5%$1,460.00$3,626.00$1,210.00$1,315.00 4. What personal themes do you infuse into your artwork? Imagine that you have been asked to create an original work of art using multiple solutions from direct observation, original sources, experiences, and imagination in order to demonstrate your artistic intent and personal themes. What would you create? Describe this original work of art and the various solutions that you would use to create it. The points M(-7,2), N(-3,4), O(-5,8)M(7,2),N(3,4),O(5,8), and P(-9,6)P(9,6) form a quadrilateral. Find the desired slopes and lengths, then fill in the words that BEST identifies the type of quadrilateral. The probability that it will snow tomorrow is 20%. What are the odds in favour of snowing tomorrow?A) 4 to 1B) 1 to 5C) 1 to 4D) 5 to 1 Which factor is the main reason the first spaceships were so large?a. to improve magnetic levitationb. to increase the thrust to reach escape velocityc. to carry more astronautsd. to carry large amounts of fuel need help on this please !!! 22 POINTS, I NEED HELP THIS IS DUE IN 20 MINUTESThroughout the book - THE HOBBIT - youve been examining the main character and following how that character changes throughout the story. The falling action and resolution are important because they wrap up the story and show how the character ultimately changes. In 100 to 150 words, explain how the character is different at the end of the novel. Be sure to use evidence from the text to support your analysis. An ice skating rink charges $1.50 to rent ice skates for 30 mins. What is the unit rate per hour for renting ice skates? Determine the measure of the missing angle 50 degrees 60 degrees 180 degrees 360 degrees what is the first law of motion?