A 15-g sample of radioactive iodine decays in such a way that the mass remaining after t days is given by
m(t) = 15e−0.055t,
where
m(t)
is measured in grams. After how many days is there only 1 g remaining? (Round your answer to the nearest whole number.)

Answers

Answer 1

Answer:

Step-by-step explanation:

SHUIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIT


Related Questions

Pls help ASAP In the triangle below, what is the measure of AngleZ?

Answers

Answer:

50 degrees is the answer

Write the slope-intercept form of the equation of the line.

Answers

Answer:

y = x + 2

Step-by-step explanation:

Choose any two points from the graph

(0, 2) ;  (-2 , 0)

Slope = [tex]\frac{y_{2}-y_{1}}{x_{2}-x_{1}}\\[/tex]

         [tex]= \frac{0-2}{-2-0}\\\\= \frac{-2}{-2}\\\\= 1[/tex]

y - intercept = 2    

y = mx + b              {m = 1 and b = 2}

y = x + 2

Ava swam for 154 minutes during her first week of vacation. In her two weeks of vacation, she swam for a total of 357 minutes. How many more minutes did she swim for in the second week than in the first week?

Answers

Answer:

Ava swam 203 more miles

Step-by-step explanation:

357-154=203

Multiple choice: which function has an amplitude of 5 and a period of π/3 ?
A) f(x)=5 cos 6x

B) f(x)=1/5 cos6x

C) f(x)=5 cos 2/3 x

D) f(x)=3 cos5x

Answers

The correct answer is C) f(x) = 5 cos 2/3 x, as it has an amplitude of 5 and a period of π/3. To determine which function has an amplitude of 5 and a period of π/3, we need to analyze the properties of the trigonometric functions presented in the options.

The general form of a cosine function is f(x) = A cos(Bx), where A represents the amplitude and B represents the frequency or period of the function.

Option A) f(x) = 5 cos 6x: This function has an amplitude of 5, but its period is 2π/6, which is not equal to π/3. So, this option is not the correct answer.

Option B) f(x) = 1/5 cos 6x: This function has an amplitude of 1/5, which is not 5 as required. Therefore, this option is not the correct answer.

Option C) f(x) = 5 cos 2/3 x: This function has an amplitude of 5, which matches the given condition. Moreover, its period is 2π/((2/3)x) = π/3, which is the desired period. Hence, this option satisfies both conditions.

Option D) f(x) = 3 cos 5x: This function has an amplitude of 3, which is not 5 as required. Thus, this option is not the correct answer.

For more such questions on amplitude

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What inequality is represented by this graph? 1 7 9 OXSA Xc6​

Answers

Answer:

OMG OMG OMG OMGOOOOOOOOOOO THANKS FOR 50 POINTS

Can someone help me how to do this task please?

Answers

This is easy write 2/3 or 1/3

Calculate the distance traveled when moving at a rate
of 60mph for 3.5hrs.

Sentence Answer

how did we get this answer ​

Answers

Answer:

dist = 60 mph * (3.5 hrs) = 210 miles

The answer is 210 Miles

A game-show spinner has these odds of stopping on particular dollar values: 40% for $5, 25% for $100, 20% for $500, and 15% for $1000. What are the odds of a player winning $5 or $100?

Answers

Answer:

13÷ 23

Step-by-step explanation:

The computation of the odds of player winning is shown below;

For $5 it is 40%

And, for $100 it is 25%

so for total it is

= 40% + 25%

= 65%

And, the total percentage is 100%

So, the odds in favor is

65:100

13:20

Now for winning it would be 13÷ 23

A single-server waiting line system has an arrival pattern characterized by a Poisson distribution with 3 customers per hour. The average service time is 12 minutes. The service times are distributed according to the negative exponential distribution. The average time a customer can expect to wait in line is:

Answers

Answer:

18 minutes

Step-by-step explanation:

Given that:

The arrival time = 3 customers / hour

The avg. service rate (s) = 12 minutes per customer

To hour, we have:

[tex]s = \dfrac{60}{12}[/tex]

s = 5 customers/ hour

Thus, the required average time for a customer needs to wait in line is:

[tex]= \dfrac{3}{5}\times (5-3) hours \\ \\ = \dfrac{3}{5}\times 2 \\ \\ = \dfrac{3}{10} \ hours[/tex]

To minutes;

[tex]= 3 \times \dfrac{60}{10} \ minutes[/tex]

= 18 minutes

Help ASAP please!!!!!!!!!!!

Answers

Answer:

im not sure but i think it is A...

HURRY IM TIMED!!!
Use this formula to solve this word problem. d=r*t Carolina wants to travel on a new maglev in Japan when she takes a trip this summer. If she takes the latest model which travels 352 mph, and it takes her 3.2 hours, how far did she travel? a. 112.6 miles c. 110 miles b. 1126 miles d. none of these

Answers

Answer:

352 mph

Step-by-step explanation:

cuz I'm super smart

Answer: 1126.4

Step-by-step explanation:

Rate times time, takes her 3.2 hrs and she travels 352, 3.2 times 352 is 1126.4

a pack of candy bars has 6 bars. Each bar weighs 3.86 ounces. How much does the pack weigh?

Answers

Answer:

23.16 punces

Step-by-step explanation:

6x3.86=23.16

Answer: 23.16 ounces

Step-by-step explanation:

If there are 6 candy bars that each weigh 3.86 ounces, you need to add up all of the weights to find the total pack weight. 6*3.86=23.16

*If by any chance you need your answer to be in pounds, divide the answer by 16 (16 ounces in a pound). 23.16/16= 1.45 pounds

The general form of the equation of a circle is a X squared plus BY squared plus 3X plus 3Y plus Z equals zero wear a equals B does not equal zero is the circle has a radius of three units in the center lies on the Y axis, which set of values of a B C,D and E my correspond to the circle

Answers

The set of values that corresponds to the circle with a radius of three units and the center lying on the Y axis is:

A = 1, B = 1, C = 0, D = 3, E = 0.

The general equation of a circle is given by:

x^2 + y^2 + 2gx + 2fy + c = 0

In this case, since the circle has a radius of three units and the center lies on the Y axis, we can deduce the following information:

The center of the circle lies on the Y axis, which means the x-coordinate of the center is zero.

The radius of the circle is three units, which means the distance from the center to any point on the circle is three units.

Using the information above, we can substitute the values into the general equation to solve for the corresponding values:

Substituting the x-coordinate of the center (zero) into the equation, we have:

0^2 + y^2 + 2g(0) + 2fy + c = 0

y^2 + 2fy + c = 0

Since the center lies on the Y axis, the x-coordinate is zero, so the term with x (2gx) becomes zero.

Substituting the radius of the circle (three) into the equation, we have:

(3)^2 = 9

Therefore, the equation becomes:

y^2 + 2fy + c = 9

Comparing this equation with the general form of the circle equation, we can deduce the values of A, B, C, D, and E as follows:

A = 1 (coefficient of x^2)

B = 1 (coefficient of y^2)

C = 0 (constant term)

D = 3 (coefficient of x)

E = 0 (coefficient of y)

Hence, the set of values that corresponds to the circle is A = 1, B = 1, C = 0, D = 3, and E = 0.

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Complete each statement using the words or algebraic expressions listed in the word bank below.
1. The length of the
of
the rectangular region
approximates the length of
the
of the circle.
2. The
of the rectangle
approximates the length of
one-half of the
circumference of the
circle.
3. The circumference of the circle is _______________________.
4. The _________________ of the ___________________ is 2.
5. The ratio of the circumference to the diameter is ______.
6. Area (circle) = Area of (_____________) =
1
2
∙ circumference ∙ =
1
2
(2) ∙ = ∙ ∙ = _____________.
Word bank
radius height base
diameter circle rectangle

Answers

Answer:

weisnedjdjjdidjdndndjddjxjjdjdndndjdjdndndndnddn

help me please!! thank you!! i’m so confused!!

Answers

Answer:

C 532 square feet

Step-by-step explanation:

We need to calculate the surface area of the storage shed.  This includes the floor.  I did the calculations without the floor and I got 434ft, which is not one of the answers.

Length = 14ft Width = 7ft Height = 8ft

The front and back of the shed both have dimensions of 14x8

The left and right sides of the shed have dimensions of 7x8

The roof and floor have the dimensions of 14x7

2(14 x 8) + 2(7 x 8) + 2(14 x 7)

2(112) + 2(56) + 2(98)

224 + 112 + 196

532 square feet

I hope this helps.

PLEASE ANSWER FOR BRAINLEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Jeff wants to form a garden that is in the shape of a triangle. He has two lengths of fence that are 19 feet long and 12 feet long. He says he will be able to form a triangular garden with a third length of fence that is 8 feet long. Is Jeff correct or incorrect in his reasoning? Explain.

Answers

Answer: Jeff is correct.

Step-by-step explanation:

The sum of the two sides of the triangle must greater than the longest side, which in this case, the longest side is 19 feet.

8 + 12 ? 19

20 > 19

Therefore, Jeff is correct.

HELP I GOT THIS WRONG AND IM NOT SURE WHICH IS CORRECT. Thank you!!

Answers

Answer:

Its Alternate Exterior Angle Theorem.

Step-by-step explanation:

Select all the problems that can be solved by finding 4 x 5.

A- Harold had 5 quarters. He used 4 quarters to buy a pen. How many quarters
does Harold have left?

B -Alice put 4 quarters in each of 5 stacks. How many quarters did Alice have?

C -Kim bought 4 notebooks for a total of $5. How much did each notebook cost?

D- Kurt bought 4 books for $5 each. How much did he pay for all of the books?

E- Jen made 5 necklaces. She put 4 beads on each necklace. How many beads
did she use in all?

F- Matthew scored 5 baskets in his first basketball game. He scored 4 baskets in
his next game. How many baskets did Matthew score in these two games?

Answers

Answer:

answers b, c, d, and e are all correct

Answer:

B, D and e

please mark me brainliest

3/11 ÷ 3/11
what is the answer pls tell me​

Answers

Answer:

1 is the answer.

(According to me)

Hope it helps!!!

Find the value of x. I WILL GIVE YOU BRAINLIEST!!!!​

Answers

Hi there!

[tex]\large\boxed{x = 40}[/tex]

We can solve for x knowing that the sum of interior angles in a triangle is 180°.

The square at the bottom indicates a right angle, or 90°. Therefore:

180 = 90 + x + (x + 10)

Combine like terms:

180 = 100 + 2x

Subtract 100 from both sides:

180 - 100 = 2x

80 = 2x

Divide both sides by 2:

x = 40.

Answer:

hi

Step-by-step explanation:

x+90⁰+x+10=180

x+x+10=180-90

2x+10=90

2x=90-10

2x=80

x=80/2

x=40

have a nice day

Which choice is equivalent to the expression below?
✓-27
A. -3✓3
B. 3✓3
C. 3i✓3
D. -✓27
E.-3✓3i

Answers

Answer:

C. 3i✓3

Step-by-step explanation:

Which choice is equivalent to the expression below?

✓-27

Square root of a negative value, so it will have a complex part.

We have that:

[tex]\sqt{-a^2} = ai[/tex]

In this question:

The square root of -27 can be factored as:

[tex]\sqrt{-27} = \sqrt{3(-9)} = \sqrt{3}\sqrt{-9} = 3i\sqrt{3}[/tex]

So the correct answer is given by option C.

Evaluate the discriminant.
Exact answer (no rounding)
0= -4x – 24x – 38

Answers

answer: x= -19/14 —> (19 over 14)

One number is seven more than four times another number. If the sum of the numbers is 22, find the numbers.

Answers

Answer:

the answer is actually study and you would know

Step-by-step explanation:

Answer:

3 and 19

Step-by-step explanation:

I need help please. ​

Answers

Supplementary angles add up to 180
So
I tho l it’s B

A rectangle has length 5.5 meters and width 7.5 meters. Select the area of the rectangle.

Answers

Answer:

41.25

Step-by-step explanation:

(1) area = 5.5 × 7.5

(2) area = 41.25

:)

Answer:More than nine-in-ten Hispanics identify with a specific religion. That, along with several other measures of belief and behavior, means that Hispanics as a group are highly religious. How does this affinity for spirituality vary among Latinos with different demographic characteristics or religious affiliations? And how precisely do the religious beliefs of Latinos set them apart from the rest of the population?

Step-by-step explanation:

22yd 14 yd into square yards​

Answers

Answer:

29.33

I thinks that right... lol :D

Forgive me if it wrong :(

Step-by-step explanation:

That is equivalent to 308 square yards.  You can verify it on this website https://www.inchcalculator.com/square-yards-calculator/.

pleas help. 10 pointssss

Answers

Answer:

6

Step-by-step explanation:

A restaurant noted what type of food its customers purchased last week.Here are the results

Answers

Answer:

There is no link to the results/question.

What is the slope of the line through (-1, 8) (3, -4)

Answers

Answer:

D. -3

Step-by-step explanation:

“Finding side lengths and angle measures of isolceles and equilateral triangles”

help pls !

Answers

Answer:

a) 100

b) 7

Step-by-step explanation:

Remember that angle measurements correspond to side lengths. This also means that if two sides or angles are congruent, then the angle or side opposite of them will also be congruent. For example, in part a two sides are both 6. This means that the angles opposite of them are also both 40. Finally, to find <K subtract 80 (because that is 40+40) from 180. Therefore, the answer is 100 degrees.

Next, remember that the markings on the angles in part b mean that the angles are congruent. Since all the angles are congruent, the sides must be as well. So HI=7.

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