The half-life of radium is 1690 years. If 80 grams are present now, how much will be present in 210 years?

Answers

Answer 1

Answer:

75.03

Step-by-step explanation:

1690 40

210 x

1690x = 210 * 40

x = (210 * 40)/ 1690

x = 4.97041420118

80 - 4.97 = 75.03


Related Questions

helppppp meeeeee the sum of the squares of three consecutive integer numbers is 1454. Find the numbers. but i found 21 22 and 23. you need to find the other set plzzz​

Answers

Step-by-step explanation:

A=x

B=x+1

C=x+2

[tex] {x}^{2} + {(x + 1)}^{2} + {(x + 2)}^{2} = 1454 \\ {x}^{2} + {x}^{2} + 2x + 1 + {x}^{2} + 4x + 4 = 1454 \\ 3{x}^{2} + 6x + 5 - 1454 = 0 \\ 3 {x}^{2} + 6x - 1449 = 0 \\ {x}^{2} + 2x - 483 = 0 [/tex]

I'm sorry but I can't use the calculator, I hope this helps you anyway.

Answer:

The two sets would be 21,22,23 and -21, -22, and -23

Step-by-step explanation:

This is because a negative number squared would be positive.

So -21^2+-22^2+-23^2 would equal the same as 21^2+22^2+23^2 which would be 1454.

1. Carmi gets a starting salary of 13,000.00 a month and an increase of 500.00 annually. What will
be her salary during the fifth year?
Solutions​

Answers

Answer:

15,500

Step-by-step explanation:

An equation that can represent this is 13000+500t, with "t" being the number of years

Let A and B be two logically equivalent compound propositions. Then

Answers

Answer:

[][][][][][][][][][][]

Need answer asap, will give brainliest.

Answers

Answer:

(-2,3)

Step-by-step explanation:

You can see that the purple is the new triangle. So look at the coordinate of the D. You can see that it is plotted at (-2, 3)

Answer:

(-2, 3)

to find the point of something you first find where uts standing on the x-axis (vertical line) and then where its standing on the y-axis (horizontal line)

Unit 10: Circles Homework 6: Arc & Angle Measures **Please Help**

Answers

Answer:

you can download the app Socratic and it will tell you

Step-by-step explanation:

I use that app for all my classes

The measure of angle x is 72 degrees

Tangent:

A tangent to a circle is a straight line which touches the circle at only one point.

The tangent TU and UV intersect at point U.

Therefore,

m∠x = 1 / 2 (arc VST - 108)

arc VST  = 360 - 108 = 252

m∠x  = 252 - 108 / 2

m∠x  = 144 / 2

m∠x  = 72°

learn more on tangent here; https://brainly.com/question/14022348

Help!
Write a function, (), which has a maximum and a y-intercept of −3.

Answers

Answer:

a possible answer could be "f(x)= -x + 3"

Step-by-step explanation:

63 students went on to the zoo. S vans were filled with equal numbers of students and 3 students rode in a car. How many students were in each van?

Answers

Answer:

no of students 63

the answer is...

21

A Mustang GT on Missouri has a marked price of $60,000. If paid in cash you are to pay 15% less than the marked price. It also have a hire purchase plan which states to pay 30% of the marked price and $1000 monthly payments for 4 yrs.
A) Discount on Cash price.
B) Cash Price.
C) Amount Payable.
D ) Hire Purchase Price
E ) Difference between the Hire Purchase price and the Cash Price.

Answers

Answer:

A) Discount on Cash price. ($9,000 )

B) Cash Price. ($51,000 )

C) Amount Payable. ($51,000 )

D ) Hire Purchase Price ($66,000 )

E ) Difference between the Hire Purchase price and the Cash Price. ($15,000 )

Step-by-step explanation:

The following is the workings:

The GT Missouri marked price = $60,000

If paying cash,

Discount = 15%

(15/ 100 ) x $60,000 = $9,000

Actual Price (less discount) = $60,000 - $9000 = $51,000

If hire purchase,

Firstly, 30% marked price,

= (30/100) x $60,000 = $18,000

Monthly payment = $1000

Period = 4 years = 4 x 12 = 48 months

Total monthly payment,

$1000 x 48 = $48, 000

Therefore, total hire purchase payment

Monthly payment + initial 30% payment

= $18,000 + $48,000 = $66,000

Difference between hire purchase and cash price,

= $66,000 - $51,000 = $15,000

Please help me! This is due tomorrow and I really need some help! Thank you.

Answers

Answer:

B. the mean is 59 inches

Step-by-step explanation:

if you add the number of inches together you get 413. 413 divided by 7 is 59. that is the mean.

Answer:

B: The mean wingspan is 59 inches.

Step-by-step explanation:

The mean is the average so when you add up all of the wingspans 53+59+59+60+60+61+61 you get 413, and to find the mean you would divide that by seven (413/7), because there are 7 students, which is 59.

What is the measure, in degrees, of angle z?

I’m not going to show answer options because I don’t want someone to just put anything :)

I DO NEED HELP THOO !

Answers

117.8 because angle at a point add up to 360 so 360 -(90 + 38.2+31.7+82.3) =117.8

what is the domain of the function​

Answers

Answer:

The domain is 0≤x<∞

Step-by-step explanation:

The domain is the values that the input can take.

The square root cannot be less than zero

sqrt(x) ≥ 0

That means x ≥0

The domain is 0≤x<∞

Explain how to tell 202/220 is not in simplest form

Answers

Answer:

An easy way to tell with a number like this is that both numbers are round, so they can both be divided by 2

Step-by-step explanation:

You can tell that it is not simplified if they are both even, as they can be divided by 2, or really, if both numbers have a common factor as a divisor.

For example, 3/6 has a common of factor by 3, 3/3 / 3/6 = 1/2.

The formula for area is length x width.
What is the area of the rectangle if the
length is 7/5 and the width is 5/8? Write
your answer in simplest form.
5
8
75|

Answers

Answer:

7/8

Step-by-step explanation:

7/5•5/8= 7•5/5•8

= 35/40

=7/8

hope this helps chu

can you help me find the value of each shape plz

Answers

Answer:

Star = 10Square = 4Circle = 1

Step-by-step explanation:

Hope it helps you!

PLEASE HELP WILL MAKE BRAINLIEST

Answers

Answer:

Step-by-step explanation:

b

answer: y= 18x+3 because the y is increasing by 3 and the y intercept is 18

Where would the last point need to be in order to finish graphing a square using the points ( 1, 3) 5,3 and 5,7?
A. (3, 7
B. 1, 5
C 1, 7
D. 5, 1

Answers

Answer:

C

Step-by-step explanation:

Pom
A line passes through point (5, -3) and is perpendicular to the equation y = x. What's
the equation of the line?

Answers

Am not sure but Y=-x+2

Please help me with this

Answers

You can down this


Http/b263849

Here are the lowest temperatures recorded in the last 2 centuries for two US cities. How many more degrees colder is the record temperature for GA than FL?

Answers

Answer:

What are the temperatures

Pythagorean Theorem
a = ? b = 7 c = 13

Answers

Answer:

a = 10.95

Step-by-step explanation:

Pythagorean Theorem formula:

a² + b² = c²

a² + 7² = 13²

a² + 49 = 169

a² = 120

[tex]\sqrt{a^2} =\sqrt{120}[/tex]

a = 10.95

A trip to the Rocky Mountains of Colorado from Denver will take 1 3/4 hours. Assuming we are 1/3 of the way there, how much longer in hours will the trip take?

Answers

9514 1404 393

Answer:

  1 1/6 hours

Step-by-step explanation:

Assuming distance and time are proportional, 2/3 of the 1 3/4 hours remain:

  (2/3)(7/4) = 14/12 = 1 1/6 . . . . hours remain

The trip will take 1 1/6 hours longer.

Answer:

the answer is 1 1/6 hours

Step-by-step explanation:

:)

Nicole is solving the equation and realizes there's a mistake.
A) Determine the mistake
B) Determine the correct answer.
- 2x -4>8
-2x - 4+4>8+4
-2x >12
- 2x/2 > 12 /2
x>-6

Answers

Answer:

She forgot to multiply both sides by -1 and reverse the inequality. She also didn't flip the signs.

Step-by-step explanation:

- 2x -4>8

-2x - 4+4>8+4

-2x >12

(-2x)(-1)<12(-1)

2x<-12

2x/2<-12/2

x<-6

Hope this helped!!!

THEN FIND THE VALUE OF X​

Answers

Answer:

Supplementary

x = 31

Step-by-step explanation:

The given angles are supplementary which means their sum is equal to 180

3x + 25 + 2x = 180 add like terms

5x + 25 = 180 subtract 25 from both sides

5x = 155 divide both sides by 5

x = 31

In a triangle, the base and height are in the ratio 6:5. If the area of the triangle is 135 sq cm, calculate the length of the base and height.

Answers

Answer:

use the firmula

area of triangle =1/2b×h

Step-by-step explanation:

let the ratio be 6x and 5x

6x+5x=135 now solve this this may help you

Dk Metcalf is my son​

Answers

Answer:

Dad, is that you?

Step-by-step explanation:

that’s... interesting lol

Being timed and pressured help me plsss

Answers

Answer:

a:] 45 pay attention to the graph

A girl/boy says they like you what do you say?

Answers

Answer:

if you like them back say you like them back if not say you're flattered but your'e not looking for anything right now.

Step-by-step explanation:

A triangle has side lengths of 25in, 30in, and 50 in. Classify it as acute, obtuse, or right. Please help me.

Answers

9514 1404 393

Answer:

  obtuse

Step-by-step explanation:

Using the idea of a "form factor", we find ...

  f = a² + b² - c²

  f = 25² +30² -50² = 625 +900 -2500 = -975

The form factor is negative, so the triangle is obtuse.

_____

Additional comment

The form factor, as defined above, classifies the triangle according to its sign:

  f > 0 . . . acute

  f = 0 . . . right

  f < 0 . . . obtuse

The largest angle in the triangle can be found from ...

  cos(C) = f/(2ab)

Here, it is C = arccos(-975/1500) ≈ 130.5416°

A school secretary plans to order 510 sandwiches for a school picnic. He asks 85 randomly selected students which type of sandwich is their favorite. Based on the data from the sample, how many of each type of sandwich should the secretary order? Show your work.



Sandwich type quantity
penutbutter 37
Ham 18
egg salad 5
Turkey 25

Answers

Answer:

85 will be the answer

Step-by-step explanation:

please mark as braillenest

Answer:

Step-by-step explanation:

510/85 = 6

Sandwich type quantity

penutbutter 37 X 6 = 222

Ham 18 X 6 = 108

egg salad 5 X 6 = 30

Turkey 25 X 6 = 150

222 + 180 + 30 + 150 = 510

FinD the 50th term of the sequence defined by the sequence 3n+3????

Answers

Answer:

[tex]\huge {\purple {a_{50} = 153}} [/tex]

Step-by-step explanation:

Given sequence is 3n + 3

[tex] \implies a_n = 3n + 3[/tex]

Plug n = 50

[tex] \implies a_{50} = 3(50) + 3[/tex]

[tex] \implies a_{50} = 150 + 3[/tex]

[tex]\huge {\red {\implies a_{50} = 153}} [/tex]

We have ,

=> T_n = a + ( n - 1)d

=> T₅₀ = 3n + 3

=> T₅₀ = 3(50) + 3

=> T₅₀ = 150 + 3

=> T = 153

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