Mathematics College

A sample of a radioactive isotope had an initial mass of 730 mg in the year 2000 and
decays exponentially over time. A measurement in the year 2002 found that the
sample's mass had decayed to 510 mg. What would be the expected mass of the
sample in the year 2011, to the nearest whole number?

Answers

Answer 1

Answer:

102

Step-by-step explanation:

Related Questions

This is another question:) PLEASE HELP!!!

Answers

Answer:

The Answer is your mom! :)

Step-by-step explanation:

What is the range of 5,4,6,3,4?

Answers

Answer:

Range=2

Step-by-step explanation:

Range=Highest number-Lowest number

          =5-3=2

Hope it Help

Mark Me Brillainest

Find the equation of this line shown

Answers

i believe the equation is y=2x-1 .
hope this helps.

-. For the event of rolling three standard fair 6-sided dice, find the following probabilities. Give all
answers as a simplified fraction.
The probability of rolling a sum of 8 or a sum of 12.
P(Sum is 8 u Sum is 12)


Answers

Answer:

1/6 or 6/36

Step-by-step explanation:

Given the qualifications, there are six qualifying combinations out of the 36 combinations, which simplified, is 1 out of 6.

40 POINTS HALP
Find the value of x, y, and z

Answers

The answer is

Z=13
Y=36
X=108

Answer: x= 108°, y=36°, and z= 30°

Step-by-step explanation: 72 and 3y make a supplementary angle which is equal to 180°.

(3z+18) and x are corresponding angles so they're equal to each other.

Peter bought 9 tickets to a basketball game. He paid a total of $72. Choose the equation that determines whether each ticket cost $6 or $8

Answers

Answer: hifcnvhkbkjhbjlljn

Step-by-step explanation:

Answer:

8 dollars

Step-by-step explanation:

If you divide 72 by 9, youll get an even number of 8.

plzzz help for brianly

Answers

Answer:

Add up the area of all the sides

Step-by-step explanation:

Surface area is the shell of a 3d shape, not the volume so you add the outside of the shape.

Hope this helps! :)

HELP PLEASEEEEEEEE I NEED HELP ASAP

Answers

Answer: Fish tank = 9 other fishtank= 9,000 Jewlery box=9 other jewelry box=320

CANT SEE OTHER SORRY

Step-by-step explanation: Ok first IK UR NOT IN COLLEGE second dont

cheat imma give ya answer to be noice

What is the area of a rectangle with 4 1/3 length and 2 1/2 width?

Answers

2 would be the answer too this question

PLEASE HELP. NO LINKS OR U WILL BE REPORTED MAKE SURE U ARE RIGHT I WILL GIVE BRAINLY THING ​

Answers

Answer:

The answer is B to your question

Use Green's Theorem to evaluate the line integral along the given positively oriented curve.

∫ c(y+e√x)dx+(2x+cosy2)dy,

C is the boundary of the region enclosed by the parabolas

y=x^2 and x=y^2

Answers

Answer:

∫ C ( y + e√x) dx  +  ( 2x + cosy² ) dy = 1/3

Step-by-step explanation: See Annex

Green Theorem establishes:

∫C ( Mdx  +  Ndy )  = ∫∫R ( δN/dx  -  δM/dy ) dA

Then

∫ C ( y + e√x) dx  +  ( 2x + cosy² ) dy

Here

M = 2x  + cosy²           δM/dy  =  1

N = y + e√x                 δN/dx  =  2

δN/dx  -  δM/dy  =  2  -  1   = 1

∫∫(R) dxdy   ∫∫ dxdy

Now integration limits  ( see Annex)

dy  is from   x  = y²    then     y = √x    to  y = x²   and for dx

dx   is from 0   to  1 then

∫ dy    = y | √x   ;   x²      ∫dy    =  x² - √x

And

∫₀¹ ( x² - √x ) dx    =  x³/3  - 2/3 √x |₀¹    =   1/3 - 0

∫ C ( y + e√x) dx  +  ( 2x + cosy² ) dy = 1/3

If x=3 and y=7, evaluate the following expression: 100 − 3 ( 3 − 4x )

Answers

Answer:

[tex]100 - 3(3 - 4x) \\ = 100 - 3(3 - 4 \times 3) \\ = 100 -27 \\ = 73[/tex]

Answer:

873

Step-by-step explanation:

100 - 3 ( 3- 4x ) 97 ( 3 - 4×3 )97 (3 - 12 ) 97 × 9 873

Anna and her friends are making their own puzzles by drawing and painting on pieces of cardboard Anna cuts her puzzle so that there are 12 rows and 15 columns how many pieces are in Anna's puzzle​

Answers

Answer:

180, because you'd do 12 x 15

Factorise :
3x² -5x + 6​

Answers

Answer:

The expression is not factorable with rational numbers.

Step-by-step explanation:

Scale factor of 3 and 6

Answers

Answer:

3:6

3x2=6

Scale factor = 2

Step-by-step explanation:

Simplify the expression (2x- 9Xx + 6).​

Answers

Answer:

2 2 + 3 − 5 4

Step-by-step explanation:

A rectangular safe can hold 7,296 cubic inches. Gold bars that are 4 inches by 8 inches by 2 inches fit to completely fill
the safe. What is the maximum number of gold bars that will fit in the safe?

(A) 64
(B) 228
(C) 114
(D) 128

Answers

Answer:

your answer is 114

I hope it's helps you

The normal rainfall in September for Denver is 1.24 inches. The normal rainfall for Miami in September is 7.63 inches. The normal rainfall in January for Miami is 2.01 inches. The normal rainfall in January for Denver is 6.91 inches.
To the nearest tenth of an inch, how much more rain does Miami get in September than it gets in January?

Answers

Answer:

5.60 inches

Step-by-step explanation:

7.63 - 2.01 = 5.62

5.62 ≈ 5.6

Tell me if there is any missing information in the question because the information for Denver seems useless and there probably something missing

A.
1.2° N of E
B.
1.2° S of E
C.
66.8° N of E
D.
66.8° S of E

Answers

Answer:

c

Step-by-step explanation:


x - 2y = 0
2x + y = 5

Answers

x - 2y = 0
x = 2y

2x+ y = 5
Replace x
2(2y) + y = 5
4y + y = 5
5 y = 5
y = 5/5 = 1

x - 2y = 0
x - 2(1) = 0
x - 2 = 0
x = 2

x=2 and y=1

Please check my answer.
Which statement shows that a scuba diver 30 feet below the surface is lower than a kite boarder 3 feet above the surface?
A: -3 > 30
B: -30 > 3
C: 3 < 30
D: 3 > -30 (I picked this one. Am I correct?)

Answers

Answer: its C because 30 is greater than 3

Step-by-step explanation:

What is c? This is pythgreomthryrom a=8 b=6 c=?

Answers

Answer:

4

Step-by-step explanation:

What is cot(A)?

A. -3 sqrt 7/7 correct

Answers

Step-by-step explanation:

[tex]to \: help \: you \\ \cot(A) = { (\tan(A)) }^{ - 1} = \frac{ \cos(A) }{ \sin(A) } \\ or : \\ \cot(A) = \sqrt{(1 + {( \tan(A) )}^{2} } [/tex]

Answer:

A is correct :)

Step-by-step explanation:

edge 2021

thank you! have a great day

Find two numbers that multiply to 11 and add to -12

Answers

two numbers that multiply to 11 and add to -12 are: -11 and -1

Eloise can fertilize her lawn in t hr. What is the rate at which she does this job?

Answers

Answer:

1 / t

Step-by-step explanation:

The rate at which a job, chore or a certain task is executed is expressed as the reciprocal of the time taken to complete such task. That is ;

Rate = 1 / time taken

From the scenario above, the time taken = t hours

Then the rate at which work is done can be expressed as :

1 / t

El 160% de T es igual a N que tanto porciento de N es el 60% de T

Answers

Answer:

sólo pasa por 100% nomás

Ratio of the ages of three children is 2:5:1. The sum of their ages is 32 years. Find the ages of the youngest and the eldest

child.​

Answers

Answer:the ages of the youngest and the eldest is 4 years and 20 Years respectively

Step-by-step explanation:

Ratio of the ages of three children is 2:5:1.

Total ratio =2+5+1=8

So that

the 1st Child's age =2/8 x 32=8  years

2nd  Child's age =5/8 x 32= 20 years

3rd Child's age =1/8 x 32= 4  years

Therefore the ages of the youngest and the eldest is 4 years and 20 Years respectively.​


Which figure has at least one acute angle ,one obtuse angle and one right angle?​

Answers

Answer: Acute triangle has an acute angle and obtuse triangle equals an obtuse angle.

Step-by-step explanation:

can you please help me with the question below

Answers

4! hope this helps :)

What is the factored form of x^2-x-20​

Answers

Answer:

(x+4)(x-5)

Step-by-step explanation:

x²-x-20

But ax² + bx +c

product = ac = 1 × -20 = -20

sum = b = -1

Factors are: -5,4( numbers if you multiply you get -20 and sum to get -1)

Therefore:

x²-5x+4x-20

x(x-5)+4(x-5)

(x+4)(x-5)

Step-by-step explanation:

x^2-5x+4x-20

x(x-5)+4(x-5)

(x-5)(x+4)

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