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

what is 91 rounded to the nearest hundred

Answers

Answer:

100

Step-by-step explanation:

Answer:

100

Step-by-step explanation:

We have the number 91 and are asked to round to the nearest 100.

When we round to a certain number, we always have to look at the number to the right of the place value being rounded to, if the numbers is 0-4, you will round down, if the number is 5-9, you round up.

Right now we have 094, 0 being the hundreds place, look to the right and see that we have 9. Therefore we round up.

100

Matthew went to the store to buy some of the ingredients for Indian pudding for his mother. He bought cornmeal ($1.74), cinnamon ($2.10), milk ($2.95), and eggs ($1.52). How much did Matthew spend? How much change would Matthew receive if he gives the cashier a $20 bill?

Answers

Answer:

8.04 and he would have 11.96 left over

Step-by-step explanation:

a solid metal cone with radius of base 12 cm and height 24 cm is melted to form spherical solid balls of diameter 6 cm each. Find the number of the balls thus formed​

Answers

Answer:

32 solid balls are formed.

Step-by-step explanation:

Let suppose that volume of the cone is equal to the total volume of balls, of which we derive the following formula:

[tex]\frac{1}{3}\cdot \pi\cdot R^{2}\cdot h = \frac{1}{6}\cdot \pi \cdot n \cdot D^{3}[/tex] (1)

Where:

[tex]R[/tex] - Radius of the base of cone, measured in centimeters.

[tex]h[/tex] - Height of cone, measured in centimeters.

[tex]D[/tex] - Diameter of sphere, measured in centimeters.

[tex]n[/tex] - Number of balls, no unit.

Then, we clear the number of balls:

[tex]2\cdot R^{2}\cdot h = n\cdot D^{3}[/tex]

[tex]n = \frac{2\cdot R^{2}\cdot h}{D^{3}}[/tex]

If we know that [tex]R = 12\,cm[/tex], [tex]h = 24\,cm[/tex] and [tex]D = 6\,cm[/tex], then the number of balls is:

[tex]n = \frac{2\cdot (12\,cm)^{2}\cdot (24\,cm)}{(6\,cm)^{3}}[/tex]

[tex]n = 32[/tex]

32 solid balls are formed.

I need help !! This is being timed

Answers

How much time do Uu have?

First Blank: 18.5

Second Blank: 37

25% of 120 = ......% of 40. What is the missing number?

Answers

Answer:

75%

Step-by-step explanation:

25% of 120=120÷4=3

30/40=75%

Check:

75% of 40=30

You bought the new PS5 and 4 games for $660. the PS5 cost $499 and each game cost the same amount. Write an equation that can be used to solve how much each game cost and solve the problem.

Answers

4x+499=660
X=40.25
X equeals the amount for each game.

I need fast help help help me

Answers

Answer:

d

Step-by-step explanation:

Answer:

it is d

Step-by-step explanation:

can you please give me brainliest? thanks!

hope this helps!

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

A penguin at the zoo dives into the pool and its path is modeled by the equation: \large h\left(t\right)=t^2-6t, where h(t) is the penguin's depth, in feet, and t is the time, in seconds, since the penguin start of the dive. Find the value of h(2) . Which of these sentences best represents the meaning of this point in the context of this question?

a
6 seconds after the penguin dives in, it is 2 feet below the surface.
b
2 seconds after the penguin dives in, it is 8 feet below the surface.
c
8 seconds after the penguin dives in, it is 2 feet below the surface.
d
2 seconds after the penguin dives in, it is 6 feet below the surface.

Answers

Answer:

divide then multply

Step-by-step explanation:

Find the mean for the given sample data. Unless indicated otherwise, round your answer to one more decimal place than is present in the original data values.

Last year, 9 employees of an electronics company retired. Their ages at retirement are listed below.

51 61 62
54 68 58
60 57 54

Find the mean retirement age.
58.3 yr
57.7 yr
58.0 yr
57.1 yr

Answers

Answer:

58.3

Step-by-step explanation:

Lonnie has saved 80% of the money she needs to buy a new video game if she has saved$36 how much does the video game cost​

Answers

Answer:

$45

Step-by-step explanation:

Pls mark me brainliest

I need Help with this
Fabiola's special seasoning mix has three ingredients. The recipe uses 4 parts thyme, 3 parts parsley, and 1 part green onion. If she is making 24 tbsp. of the mix, how many tbsp. of parsley does she need?
3
5
15
9

Answers

Answer: 9

Step-by-step explanation: First, you find how many parts are needed. 4+3+1=8

So, we then divide 24 by 8 to find out what one part is. This is 3

As she needs 3 parts of parsley, we multiply 3 by 3 (each part) to get 9 tbsp.

Fabiola's special seasoning mix of 24 tbsp. needs 9 tbsp. of parsley.

What is a numerical expression?

A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.

Given, Fabiola's special seasoning mix has three ingredients. The recipe uses 4 parts thyme, 3 parts parsley, and 1 part green onion.

Let, 'x' be the ratio multiplier.

Therefore, 4x + 3x + x = 24.

8x = 24.

x = 3.

So, She needs 3×3 = 9 tbsp. of parsley.

learn more about numerical expressions here :

https://brainly.com/question/29199574

#SPJ2

11 pointsI just need help PLEASE HELP ME IF YOU DO ILL THANK YOU AND GIVE POINTS

Answers

Answer: 1/5

Step-by-step explanation:

So stats. The using the results im guessing there are 20 cards since we aren't told otherwise. since we drew diamond roughly 4 out of the 20 cards we have a 20% or 1/5 chance of drawing diamond randomly

Answer: 1/5

Step-by-step explanation:

Add all 8+3+5+4=20

4/20

simplify by 2

4/2= 2  20/2= 10 = 2/10

simplify by 2 again

2/2= 1  10/2=5

=1/5

Translate the sentence to an equality a number c increased by 2 is less than or equal to -15​

Answers

Answer:

c+2 [tex]\leq[/tex] -15

Step-by-step explanation:

increased by means "+"

less than or equal to means "[tex]\leq[/tex]"

oli , Sam and Tim share £360 in the ratio 3:2:1 . what's sa
ms share

Answers

Answer:

it on web I had this question once

Step-by-step explanation:

put it in web and you be find

The amount that Sam get (the share of Sam) is £120

What is ratio of two quantities?

Suppose that we've got two quantities with measurements as 'a' and 'b'

Then, their ratio(ratio of a to b) a:b or [tex]\dfrac{a}{b}[/tex]

We usually cancel out the common factors from both the numerator and the denominator of the fraction we obtained. Numerator is the upper quantity in the fraction and denominator is the lower quantity in the fraction).

Suppose that we've got a = 6, and b= 4, then:

[tex]a:b = 6:2 = \dfrac{6}{2} = \dfrac{2 \times 3}{2 \times 1} = \dfrac{3}{1} = 3\\or\\a : b = 3 : 1 = 3/1 = 3[/tex]

Remember that the ratio should always be taken of quantities with same unit of measurement. Also, ratio is a unitless(no units) quantity.

Same thing happens for 3 quantities and more such quantities.

So if its given that Oli, Sam, and Tim's share (total  £360) are in the ratio 3:2:1, that means some common factor (lets call it 'x') must be cancelled off as 3+2+1 don't equate to 360.

So, we have:

Oli's share = 3xSam's share = 2xTim's share = 1x = x

Their total evaluates to 360 (in euros).

(we don't write symbols like of currency generally, and understand it from context. Also, sign of multiplication is often hidden if there are non numeric symbols and numbers being multiplied are written together)

Thus, we get:

[tex]3x + 2x + x = 360\\(3+2+1)x = 360\\6x = 360\\\\\text{Dividing both the sides by 6}\\\\\dfrac{6x}{6} = \dfrac{360}{6}\\\\x = 60[/tex]

Thus, we get:

Oli's share = 3x = 3×(60) = £180Sam's share = 2x = 2×(60) = £120Tim's share = 1x = x = £60

Thus, the amount that Sam get (the share of Sam) is £120

Learn more about ratio here:

brainly.com/question/186659

I could use a little help on this question take your time and please give the right answer if you dont give the right answer its fine

(reward for best answer):D

Answers

Answer:

3/5 or three fifths

Answer:

62 cookies

Step-by-step explanation:

If we take 40 and divide by 24 we get 1.6 that means for every normal cookie there is 1.6 chocolate cookies. With that we can simply just divide 100 by 1.6 to get 62.5 I chose to round down.

I NEED HELP I ONLY HAVE 20 MINUTES

Answers

Answer:

hello I don't understand forgiveness helped me in my task

Step-by-step explanation:

2. Find the correlation coefficient AND best fit line, of the following data use the linear model
Commute Time
(in minutes)
х
Age of Vehicle
(in years)
Y
10
6
20
12
30
2
40
7
50
6
6
60
70
12
80
2
90
10
Stay in the to

Answers

Ans? u9999y

Step-by-step explanation:

Chelsea is making a kite in the shape of a triangle. To determine if the triangle is a right triangle, Chelsea completed the following steps.

Step 1:

Find the side lengths of the triangle: 30 inches, 24 inches, 18 inches.

Step 2:

Substitute the values into the Pythagorean theorem: 18 squared + 24 squared = 30 squared.

Step 3:

Combine like terms: (18 + 24) squared = 30 squared.

Step 4:

Evaluate each side: 1764 not-equals 900.

Chelsea says the triangle is not a right triangle. Which best describes the accuracy of her explanation?

The triangle is actually a right triangle. In step 2, Chelsea incorrectly substituted the values into the Pythagorean theorem.

The triangle is not a right triangle, but in step 2 Chelsea incorrectly substituted the values into the Pythagorean theorem.

The triangle is actually a right triangle. In step 3, Chelsea incorrectly rewrote the expression on the left side of the equation.

The triangle is not a right triangle, but in step 3, Chelsea incorrectly rewrote the expression on the left side of the equation.

rename 1/2 and 2/3 as fractions with denominators of 6.then add the renamed fractions. write the sum as a mixed number.

Answers

Answer:

1 and 1/6

Step-by-step explanation:

To rename a fraction you multiply both numbers by however many times the original denominator goes into the new one.

2 goes into 6 three times.

1 times 3 is 3

and 2 times 3 is 6

so 1/2=3/6

3 goes into 6 twice

2 times 2 is 4

and 2 times 3 is 6

so 2/3=4/6

to add fractions you add the numerators while keeping the denominators the same.

3+4=7 so:

3/6+4/6=7/6

6/6=1

so 7/6 contains 1 whole

once you take that out you have 1/6 left over

h(t)=-10x+6 h(?)=-44

Answers

Answer: h(5)=-44

Step-by-step explanation:

Given

h(t)=-10x+6

h(?)=-44

Substitute the [-44] value to the first equation

-44=-10x+6

Subtract 6 on both sides

-44-6=-10x+6-6

-50=-10x

Divide -10 on both sides

-50/-10=-10x/-10

x=5

Hope this helps!! :)

Please let me know if you have any questions

Geometryyy pls help ty

Answers

16-~7 make sure to leave the power 5 out

Answer:

15.56

Step-by-step explanation:

if ∠b is 45° then ∠c is also 45°

so AB=11 ft

using Pythagoras theorem 11²+11²= BC²

What’s the area of the figure??

Answers

Answer:

b

Step-by-step explanation:

the the area of the square is 36, because 6*6=36

the area of the semicircle on the top is 14.135, because the formula for area is pi R^2, so its 3.14*9 and then/2.

so now we add 36+14.135=50.135 rounded up =50.14

can i get brainliest please? thanks!

hope this helps!

Help for math. Question is down below

Answers

Step-by-step explanation:

3/5=0.6

3/4=0.75

2.75/0.6= 4.58 =~ 5

approximately 5 servings

If x= -3 is one solution of x2 + 9x + 18, what is the other solution?​

Answers

(x+6)(x-3)
So x=-6 or x=3

What i
Bill will randomly pick one marker from a bag and one crayon from another
bag.
• There are 3 red markers, 2 green markers, and 1 blue marker in the first
bag.
• There are 2 brown crayons and 3 purple crayons in the second bag.
G
C
C
C

Answers

Answer:

Answer: B, 6/11

Step-by-step explanation:

Well we know that 3+2+1=6+3=9.

So that means we will add the 2 brown crayons to the denominator.

The denominator before we added 2 to it, it was 9 as a common denominator. If we want to get the common numerator we are going to have to add the top and that will become 9 then you will have to subtract that by 3

6/11 is also the smallest number that you can get.

You can turn the fraction into a decimal and have it that way to make it easier.

When you turn a fraction into a decimal the number is always the same but with comparing numbers it is a lot easier to do than comparing fractions

Hope this helps, and if it did I would appreciate it if you marked me as Brainllest. Have a wonderful day!

I need help on this question

Answers

Answer:

The 3rd One

Give Brainlest

Step-by-step explanation:

2(2x + 3) = -6(x + 9)

Answers

Answer:

Your answer is -6.

Step-by-step explanation:

Simplify 2(2x+3) to get 4x+6  

Then simplify -6(x+9) to get -6x-54

Now you have 4x+6=-6x-54

Move all of the coefficients to one side:

10x+6=-54

Move all of the constants to the other side:

10x=-60

Divide each side by 10:

10/10x=-60/10

To get your answer of -6.

pls tell me how to do it

Answers

Answer:

1) 35

2) 125

Step-by-step explanation:

1)

angle adc = x

x+ 90 + 20 = 180                (triangke sum property)\

x = 180 - 110 = 70

angle bdc = 70/ 2 = 35          ( the median cuts the angle into 2)

2) cbd = x = 125

x + c + bdc = 180

x + 35 + 20 = 180

x = 180 - 55 =  125

I hope im right!!!

Factor to write an equivalent expression to 36a−16

Answers

Answer:

4(9a-4)

Step-by-step explanation:

Answer:

4(9a-4)

Step-by-step explanation:

You roll a 20-sided die and a 6-sided die. What is the probability that the sum of the dice is less than 5?

Answers

Answer:

8 in 26 i think.

Step-by-step explanation:

im pretty sure if it is supposed to be less than five then you need to add the number of digits and those are the odds. pretty sure.

5%

Did the quiz and got it right, explanation given:

Determine the size of the sample space. Look for how many of those outcomes result in the dice adding up to either a 4, 3, or 2. Then use the addition rule to get the probability.

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