11 The table below shows the amount of a decaying
radioactive substance that remained for selected
years after 1990.
0
2
5
9
14
17
19
Years After 1990 (X)
Amount (9)
750
451
219
84
25
12
8
Write an exponential regression equation for this
set of data, rounding all values to the nearest
x thousandth. Using this equation, determine the
amount of the substance that remained in 2002, to
the nearest integer

Answers

Answer 1

Answer:

65g52378

Step-by-step explanation:


Related Questions

It took the football team 5 h to travel from Titletown, a total distance of 1320 km. Part of the trip was by bus and the remainder by plane. The bus averaged 40 km/h and the plane 600 km/h. How many hours were spent travelling by bus?

Answers

Answer:

It took 2 hours by plane

Step-by-step explanation:

let bus is represented by x and plane is represented by y

the total distance of bus and plane will be represented by equation:

40 x + 600 y = 1320           (1)

the total time taken by bus and plane will be represented by:

x + y = 5                              (2)

solving equations (1) and (2) simultaneously:

Multiply by 40 on both sides in eq (2)  and then subtract (1) and (2)

40 x + 600 y = 1320

40 x + 40 y = 200

_______________

         560 y = 1120

               y   = 1120/ 56

               y= 2

since plane is represented by y so, the time they spent travelling by plane is 2 hours.

PLZZZ HELP I WILL GIVE BRIANLY
What is the equation of the additive relationship represented by this table?


Enter your answer by filling in the box using an integer.


x y
9 5
12 8

Answers

Answer:

x-4=y

Step-by-step explanation:

9-4=5

12-4=8

Answer:

9,5

step-by-step explanation:

Middle school students were asked how they got to school each morning. There were 375 students who said they rode the bus. This number represents 60% of the school enrollment. How many students are enrolled?

Answers

Answer:

625 students

Step-by-step explanation:

The angle of a triangle are in the ratio 3:7:8. Find the angles.​

Answers

Answer:

30°, 70°, 80°

Step-by-step explanation:

Let the measures of the angles be 3x, 7x and 8x.

Since, sum of the measures of all the three angles of a triangle is 180°.

Therefore,.

3x + 7x + 8x = 180°

18x = 180°

x = 180°/18

x = 10°

3x = 3*10° = 30°

7x = 7*10° = 70°

8x = 8*10° = 80°

Thus, the measures of the angles are 30°, 70°, 80°.

What is the solution to
-10 = 5(2x – 4)

Answers

-10=5(2x-4)
-10=10x-20
+20 +20
10=10x
1=x

Answer:

3=x

Step-by-step explanation:

multiply 5 times 2x and 4 which is 10x-20

then you have -10=10x-20

then add 20 to both aides and you'll have

30=10x then divide by 10 to get x alone

and you have

3=x

Tell me what is the equation for equation 1 and 2

Answers

Answer:

2x+3y=12$

3x+2y=19$

Hope it helps

i need help, may someone help please..

Answers

Answer:

if line p is going through the middle x is equal to 5

Combine like terms.
y +2+8(y + 8) =
Please i need this for now

Answers

Answer:

9y+66

Step-by-step explanation:

Find x, y, and z. (Round to the nearest tenth if needed.)
12
у
X
N

Answers

Answer:

I'm sorry that your frog is dead, at least now we can fry his legs ~~tasting like chicken ~~~~~~flavor ain't missing

Please help and show work

Answers

Answer:

254.34 in²

Step-by-step explanation:

The diameter is 18, so the radius is 9. The formula for circumference is [tex]\pi r^{2}[/tex]. 9 squared is 81. 81 x 3.14 is 254.34.

Hope it helps!

The answer is 254.34

Explanation:

No more than 15 copies of a newspaper are left in the newspaper rack. Write an inequality to represent this situation.

Answers

Answer:

0≤x≤15

Step-by-step explanation:

On Monday Sylvia spent 5/12 of a day driving to her cousins house. On Friday she spent the same amount of time driving home. What fraction of a day did Sylvia spend driving to her cousins house and back?

Answers

Answer: The fraction of a day did Sylvia spend driving to her cousins house and back = [tex]\dfrac{5}{6}[/tex]

Step-by-step explanation:

Given: Fraction of day Sylvia spent to drive her cousins home = [tex]\dfrac5{12}[/tex]

Fraction of day Sylvia spent to drive her home back= [tex]\dfrac5{12}[/tex]

Total fraction of day Sylvia spend driving to her cousins house and back = [tex]\dfrac5{12}+\dfrac{5}{12}[/tex]

[tex]=\dfrac{5+5}{12}\\\\=\dfrac{10}{12}\\\\=\dfrac{5}{6}[/tex]

Hence, the fraction of a day did Sylvia spend driving to her cousins house and back = [tex]\dfrac{5}{6}[/tex]

Can u help me with Circles and Composite Figures?​

Answers

Answer:

What type 9f composite figure?

Step-by-step explanation:

Pls send an attachment

Answer:

please can you bring the images of the circles and Composite Figures you want us to help you out.

Step-by-step explanation:

There is no attachment so please how can your question be answered.

PLEASE HURRY Question 2(Multiple Choice Worth 1 points)
(07.01 LC)
What is the value of x in the equation -6 + x = -4?
0-10
O
-2
O2
O 10

Answers

2
So it’s third option
All u have to do is

Add 6 to both sides so
-4+ 6 is 2

Thus

X=2

Help please help me I don’t know the answer I’ll mark as Brainlyiest if right

Answers

The area of any prism is base*height.

The main trick in this problem is determining which face is the base, since this is a triangular prism. We need to calculate the area of the triangle base.

11*8/2=44

Now we just need to multiply by the height.(note height is b this case because the prism is actually printed with the base facing towards you.

44*5=220

Done!

So answer choice B 220.

Answer:

220 is the right answer

The radius of a circle is 3.5 m. Find the circumference to the nearest tenth.

Answers

Answer:

21.99 but you have to round it

Step-by-step explanation:

Answer:

22

Step-by-step explanation:

yes

what’s 3-4/7 equal as a fraction?!

Answers

Answer:

17/7 or 2 3/7

Step-by-step explanation:

3 is the same as 21/7. Subtract 21/7-4/7 to get 17/7.

Hope it helps!

Hey there. Hope you're having a pleasant morning/evening and wherever else in between. The answer of 3-4/7, as far as I can remember, is -1/7.

can I have help on this ​

Answers

Answer:

5.5

Step-by-step explanation:

22/4=5.5

can you please mark me as brainliest? thanks!

hope this helps!

What is the answer to this question it is urgent

Answers

the answer is D scnagntwhwth

6) A circular window on a boat has a diameter of 24
inches. Approximately how much wall space does the
window take up?
A 38 in?
B 75 in?
C 113 in?
D452 in?

Answers

Answer:

452.448in² options D

Step-by-step explanation:

A circular window on a boat has a diameter of 24

inches. Approximately how much wall space does the

window take up?

A 38 in?

B 75 in?

C 113 in?

D452 in?

Given data

D=24 inches

Radius =d/2= 24/2= 12 inches

Area A

A=πr²

Substitute

A=3.142*12²

A=3.142*144

A=452.448in²

Can somebody plz help solve each questions for what it equals correclty thanks so much :3

WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST !!:DD

Answers

25.) m = 32

26.) p = 42

27.) r = 24

28.) x = 45

Jo sold 132 mugs. One quarter of the mugs were small. The rest were large. How many small mugs did Jo sell? * 1 point

Answers

Answer:

33 small mugs

Step-by-step explanation:

Given:

Total number of mugs sold by Jo = 132

One quarter of the mugs were small. The rest were large.

To find: Number of small mugs sold by Jo

Solution:

Number of small mugs sold by Jo = [tex]\frac{1}{4}[/tex] (Total number of mugs sold by Jo)

Therefore,

Number of small mugs sold by Jo [tex]=\frac{1}{4}(132)=33[/tex]

A quantity with an initial value of 6900 grows exponentially at a rate
of 40% every 8 hours. What is the value of the quantity after 2.75
days, to the nearest hundredth?

Answers

Answer:

Step-by-step explanation:

2.75 days * (24 hours)/day = 66 hours

6900(1.40)^(66/8) = 119,765.72

Answer:

110765.72

Step-by-step explanation:

-7 2/3 + (5 1/2) + 8 3/4 = Need the answer asap

Answers

Answer:

answer is 7898tI don't know either thank very much for the points though

Sale! 60% OFF of the original price! Samuel wants to buy a model airplane. The original price is $40. How much will Samuel pay if he buys it during the sale?​

Answers

Answer:

$16

Step-by-step explanation:

1-.6=.4

.4 x 40 = 16

Answer:

60% of 40.00 is 24

Step-by-step explanation:

I hope this helps! Have a wonderful day!

HELP PLZ there are no answer choices plz

Answers

the answer would be 12.5
if this is scale factor .. you have to divide the side by each other
10/4 = 2.5
20/8 = 2.5
which means 5 multiply by 2.5 equals 12.5

Serenity invested $3,100 in an account paying an interest rate of 2.9% compounded continuously. Assuming no deposits or withdrawals are made, how much money, to the nearest dollar, would be in the account after 12 years?

Answers

Answer:

$4179

Step-by-step explanation:

3,100*.029= 89.9

89.9*12=1,078.80

3,100+1,078.80=4,178.80

4,178.80 rounded to the nearest dollar= 4179

The amount of money in the account after 12 years would be $4,371.

What is Compound interest?

Compound interest is defined as interest paid on the original principal and the interest earned on the interest of the principal.

To calculate the amount of money in the account after 12 years, we need to use the formula for continuously compounded interest, which is:

A = P[tex]e^{rt}[/tex]

where A is the final amount, P is the principal (initial amount invested), r is the annual interest rate, and t is the number of years the money is invested.

In this case, the initial amount invested is $3,100, the annual interest rate is 2.9%, and the number of years is 12.

Plugging these values into the formula, we get:

A = $3,100 × [tex]e^{0.029 \times 12)[/tex]

A = $3,100 × [tex]e^{0.348}[/tex]

A = $3,100 × 1.41

A = $4,371

Therefore, the amount of money in the account after 12 years, to the nearest dollar, would be $4,371.

To learn more about Compound interest click here:

brainly.com/question/25857212

#SPJ2

A whole number is written on a piece of paper.
You are given three clues to help you work out the number written on the piece
of paper.
Clue 1: Triple the number is between 18 and 33 inclusive.
Clue 2: The number is a prime number.
Clue 3: The number is not a factor of 99.
Use each of the clues above to refine your search.
Enter the list of numbers obtained after each clue to finally find the number
written on the piece of paper.
[3]

Answers

Answer:

1)6,7,8,9,10,11

2)7,11

3)7

The whole number is 7.

What is whole number?

The group of natural numbers that includes the number 0 is known as whole numbers. The mathematical set of whole numbers is 0 through 9 and is represented by the letter W.

W = {0, 1, 2, 3, 4, …}

To better grasp whole numbers, consider the following information:

Whole numbers make up all natural numbers.There are only full numbers while counting.Zero and all positive integers are whole numbers.Real numbers are all entire numbers.

Given:

Triple the number is between 18 and 33 inclusive.

Then the number can be

3x6 = 18

3 x 7= 21

3 x 8= 24

3 x 9= 27

3 x 10= 30

3 x 11=33

Numbers are 6, 7, 8, 9, 10, 11

2. Number is a prime number

The prime numbers are 7 and 11.

3. Number is not a factor of 99

The number is 7 because 11 is factor of 99.

Learn more about whole number here:

https://brainly.com/question/19161857

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Solve the following system of equations using substitution, elimination, or elimination by multiplication

Answers

Answer: B

Step-by-step explanation:

Write an equation of a line that passes through the point (1, 2) and is perpendicular to the line y=-1/4x+2​

Answers

Answer:

y = 4x - 2 would be the equation

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