If the half life of a substance is 4 weeks, how long will it take for 400 mg of this substance to decay to 25 mg?

Answers

Answer 1

Answer:

I believe the answer is 16 weeks.

Step-by-step explanation:

Sorry for the wait


Related Questions

Write an addition problem involving i that results in the simplified expression 5-2i

Answers

Answer:

-5+2i

Step-by-step explanation:

if the nth term of a number sequence is n2-5, find the first 3 terms and the 10th term

Answers

9514 1404 393

Answer:

-4, -1, 495

Step-by-step explanation:

Use n = {1, 2, 3, 10}.

  n^2 -5 = {1, 2, 3, 10}^2 -5 = {1, 4, 9, 100} -5 = {-4, -1, 4, 95}

The first three terms are -4, -1, 4.

The 10th term is 95.

HELP PLS!! BRAINLIEST

Answers

Answer:

50 degrees

Step-by-step explanation:

Hope this helps and have a great day!!!

Answer:

angle l is 50 degrees i belive

Step-by-step explanation:

Triangle DEF has coordinates D (5,2), E (5,-2), and F(-4, 0). Which of the
following statements is true about triangle DEF?*
The triangle has no lines of symmetry.
Both

Answers

Answer:

Well, I don't have further explanation to this question but I know the answer which is: The x-axis is the only line of symmetry

Please need help on this

Answers

If the diameter is 12ft, the area is 113.1ft²

Dart Game Results
20
18
Rami works at a carnival dart game where groups of
people try to pop balloons taped to a wall by throwing
darts. He records the number of people in each group
and the total number of balloons they pop. This graph
represents Rami's data.
How many balloons did the group of 5 people pop?
16
14
12
Number of balloons popped
Enter your answer in the box.
4
balloons
2
0 1
2
3
4
5
9
10
6 7 8
Number of people

Answers

How many balloons did the group of 5 people pop?
Answer: 12

I hope I helped. Brainliest would be appreciated, but you don’t have to give me Brainliest if you don’t want to.

help with geometry

ddddddddddd

Answers

The answer is B..........

PLZ HELP!!!!! BEST ANSWER WILL BE CHOSEN FOR BRAINLIEST!

Answers

Answer:

The angle measures of quadrilateral P'R'S'T are equal to the corresponding angle measures of quadrilateral PRST

Step-by-step explanation:

The transformation rule (x,y) ----> (x + 4 , y + 9 ) is an example of translation.

Translation is moving the points around.

During a translation the only thing that changes is the location of the points.

Everything else stays the same therefore the corresponding angles will be congruent.

HELP PLEASE!

A rectangular picture is twice as long as it is wide. If the
area of the picture is 288 in^2, what are its dimensions?

The dimensions of the picture are_____ in long by_____ in wide.

Answers

Answer:

24 in long by 12 in wide.

Step-by-step explanation:

l=2w

288=(2w)×w

288=2w^2

144=w^2

12=w

use w=12 to solve for l

l=2(12)

l=24

How do i get 37 is what % of 98!

Answers

Answer:

37.76

Step-by-step explanation:

it easssyy i guess

Please help this is important

Answers

Answer:

First blank - SSS congruent condition

Second blank - Congruent

Answer: This looks famiiar to me btw which school do u go to? :)

Will give brainlst
Have a nice day

Answers

The correct answers are A for Q5,
D for Q6, and C for Q7

A
D
C

The Pythagorean Therom is most helpful

A^2 + B^2 = C^2

The table shows the participation in a school's debate club during the last four years.
Year 1 2 3 4
Students
14
19
25
33
Between which two years did the club see the greatest growth? By what percent did it grow?
The greatest growth was between years 3 and 4. The growth between those years was about 32%.
The greatest growth was between years 1 and 2. The growth between those years was about 5%,
The greatest growth was between years 3 and 4. The growth between those years was about 8%.
The greatest growth was between years 1 and 2. The growth between those years was about 36%.

Answers

14! Is the right answer

33) 90÷18-18÷6-6÷3=
Preciso de ajudaaaa

Answers

Answer:

67

Step-by-step explanation:

(90÷18)-(18÷6)-(6÷3)= 72-3-2= 67

What is the asymptote of this function?
A. X= 3
B. Y= 3
C. X= 4
D. Y= 4

Answers

[tex] \huge \sf \pink{Answer}[/tex]

D. Y=4

[tex] \huge \sf \pink{Reason}[/tex]

Because it is situated on the upper axis,which we called Y-axis.If we count the sequence then the line was on number. 4.

Hence,the answer is number 4.

[tex] \huge \sf \pink{Verification}[/tex]

For verification we mark a point on that line and count the sequence.We will find that it is on 4.

Hence,Verified✔️

Note:For verification u can see attachment

b) 144 kg in the ratio 1:3:5​

Answers

Answer:

9.6666

Step-by-step explanation:

[tex]144 \times 1 \div 3 \div 5[/tex]

Paulo has a receipt from a restaurant. The total amount is blurred, but he knows he left a $4.25 tip, which was 20% of the cost of the meal. How much did his meal cost? How much did he spend in total?

Answers

Answer:

$21.25

Step-by-step explanation:

20% of the meal (x) = 4.25

20/100= 0.2

0.2 * x= 4.25

0.2x= 4.25

(divide both sides by 0.2)

x= $21.25

Write the equation of the line that passes through (1, 5) and (−2, 14) in slope-intercept form. (2 points) A- y = 3x + 2 B- y = 3x + 8 C- y = −3x − 2 D- y = −3x + 8

Answers

Answer:

the correct answer is y=-3x+8

Which unit measures volume?
A. square inch
B. grams
C. cubic inch
D. meter

Answers

Answer:

C. Cubic inches

Answer: C. cubic inch

Step-by-step explanation:

I need help solving this equation 7/(x+1)-3/2=8/3x+3

Answers

Answer:

5/16,-3

Step-by-step explanation:

I didn't actually solve this by myself, I used this website to solve this.

Q1 (Describe the two eukaryotic animal cell organelles that have roles similar to the organs of the human digestive system)Q2(Describe how proteins are made packaged and transported within the cell) plz help fast

Answers

Step-by-step explanation:

Ans 1

Two eukaryotic animal cell organelles that have roles similar to the organs of the human digestive system are lysosome and mitochondria. ... Mitochondria is like the small intestine, it is responsible for converting the food we eat into nutrients and minerals needed for the cell

Ans2

The Golgi processes proteins made by the endoplasmic reticulum (ER) before sending them out to the cell. ... Proteins must make their way through the stack of intervening cisternae and along the way become modified and packaged for transport to various locations within the cell (Figure 1).

A figure has vertices at points (0,3),(6,3), and (3,6)what polygon is made

Answers

Answer:

The polygon that is made is a triangle

Step-by-step explanation:

Which number when multiplied by 3 will result in a number smaller than 3?

A) 1.99 B) 1.5 C) 9/11 D) 1.002

Answers

Answer:

c bc c is a fraction which is smaller than a #

the answer is c.......

Given the following situation, determine if the data is rank data. A NFL Stadium manager wants to compare the Customer Satisfaction levels of two different stadium locations. He randomly selects 30 customers from Stadium A and Stadium B, and he compares the results. The Customer Satisfaction Survey measures responses as "Highly Satisfied", "Satisfied", "Neither", "Unsatisfied", and "Highly Unsatisfied." Is this rank data? Group of answer choices not rank data rank data

Answers

Answer:

Rank data

Step-by-step explanation:

Ranked data scale is one in which the ordering or levels in the scaling format follows or depicts a certain degree of importance or hierarchy. They are usually used in ordinal scaling method. In the scenario above, the ranking follows a defined order with the highest level of satisfaction which a customer can report being Highly Satisfied" followed by "Satisfied" then "Neither" (meaning that customer is neither satisfied nor unsatisfied) the least level of satisfaction which a customer could report is being "Highly Unsatisfied." which is worse than being "Unsatisfied".

please help find the central angle and perimeter !

Answers

Step-by-step explanation:

We will have the following

*First: We have that the area of a sector of a circle is given by the expression:

A = r²a/2

Here r is the radius and alpha is the central angle.

*Second: We determine the central angle as follows:

[tex]36\pi =[/tex]

(12)²a/2 ➡️ a = 36í•2/(12) ²➡️

[tex]a = \frac{1}{2} \pi[/tex]

So, the central angle has a measurement of 1/2 pi.

Third: We determine the perimeter of the sector as follows:

First: we determine the arc length with two times the radius, that is:

p = 2(12) +

[tex]6\pi[/tex]

➡️ p = 24 +

[tex]6\pi[/tex]

So, the perimeter of the sector is 24+ 6pi meters [ Approximately 43 meters].

A restaurant wants to study how well its salads sell. The circle graph shows the sales over the past few days. If of the salads sold were ​salads, how many total salads did the restaurant​ sell?

Answers

40%=10
80%=20
100%=25
answer is 25

The refrigerator part of a refrigerator freezer has a volume of 27 cubic feet. The freezer part is 2 feet high 2 feet deep and 3 feet wide What is the total volume of the refrigerator freezer

PLS HELP

Answers

Answer:

39 cubic feet

Step-by-step explanation:

The volume of the freezer part:

2*2*3 = 12 cubic feet

Total volume is:

27 + 12 = 39 cubic feet

Help me please ASAP Please please

Answers

Answer:

$31.23

Step-by-step explanation:

104.1% x 30 = 31.23

$31.23 is your answer for this question

At a local college, 101 of the male students are smokers and 909 are non-smokers. Of the female students, 270 are
smokers and 630 are non-smokers. A male student and a female student from the college are randomly selected for a
survey. What is the probability that both are non-smokers?
Do not round your answer. (If necessary, consult a list of formulas.)



Answers

Answer:

63% Chance

Step-by-step explanation:

Remember, to find the probability of non smokers, we must find the percentage of both male and female non-smokers, and multiply them together.

So lets take all our data from this word problem first. 101 males are smokers, 909 males are not. 270 females are smokers, 630 are not.

Now, to find the percentage of non-smokers, lets add up the total amout of males, and then divide the amount of non-smokers by that number:

909+10=

1010

Ok now we know the total amount of males. Lets divide the amount of non-smokers my 1010:

909/1010

=

0.9

So this shows you that 90% of males are non-smokers.

Now lets do the same with the females:

630+270

=

900

Ok, now we know the total amount of females. Lets divide the amount of non-smoking females by this number:

630/900

=

0.7

Ok, so now we know that 70% of females are non-smokers.

Here is the final step, multipling the numbers together to find the chances of both genders being non-smokers.(I put the percentages back into decimal form when i multiplied)

0.7x0.9

=

0.63

So now we have our answer. We know that there is a 63% chance that the survey will be about 2 nonsmoking male and females.

Hope this helps!

Convert the complex number from polar to rectangular form
z=cis(7pi/6)

Answers

3809 3.14 x
135 26x
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