A scientist has 400 grams of a radioactive substance with a half-life of one year. The amount of the substance that the scientist has after t years is represented by the expression 400(0.5)t.

Which kind of expression is 400(0.5)t?

linear
quadratic
exponential growth
exponential decay

Answers

Answer 1

Answer:

D. exponential decay

Explanation:

Got it right on edge :P


Related Questions

Muscle fibers contain which of the following?
A.
Sarcolemma
B.
Sarcoplasm
C.
Multi-nuclei
D.
All of the above

Answers

Answer: D

Explanation: Muscles are made of sarcolemma (membrane), sarcoplasm(tissue), and they have multi nuclei inside of them.



Identify the control group for the rat experiments described in the Paralytic Shellfish Poisoning Scenario.

Answers

Answer:

This question is incomplete

Explanation:

This question is incomplete. However, the control group of an experiment is the group in which every other group of the experiment is firstly compared with. This is because control groups are usually not administered with any form of treatment. Thus, the control group of the experiment/scenario referred to in the question will be the group that did not receive any form of treatment and was probably given water or placebo.

Why can a planet orbit circular?

Answers

Answer:

Explanation:A circle is merely a special case of an ellipse. However, the planets do not quite move in ellipses either. The increased kinetic energy of a planet as its distance from the Sun decreases causes it to behave as though it had a greater mass, which results in the point of the orbit furthest from the Sun precessing.

Scientists study salamanders and their ability to regenerate lost legs and tails. What additional information is essential for scientists to understand in order to apply this ability to humans who have lost limbs?

how quickly the body parts regenerate
how similar salamanders are to humans
which body parts are most often lost
which genes control regeneration

Answers

Answer:

The answer could be:

(/) which genes control regeneration

(/) how similar salamanders are to humans

(x) how quickly the body parts regenerate  (salamanders' size and form does not equate to human beings)

(x) which body parts are most often lost  (it was already given that it's legs and limbs)

Answer:

d

Explanation:

Cause i am the smartest

what is malcoms prediction for hammonds island in jurassic park

Answers

Answer:

I quote: "Life cannot be contained. Life breaks free. Life... finds a way"

Explanation:

What does photosynthesis and cellular respiration have in common?

Answers

They both reproduce and have to do something with life

Briefly explain how each layer interacts with electromagnetic radiation from the sun by describing the temperature changes that occur

Answers

Explanation:

The layers of atmosphere are differentiated on the basis of different temperature gradients.Thus,different layers within the atmosphere are created.

Toposphere is heated from the ground. Thus, with increase in altitude temperature decreases.

In the stratosphere, temperature increases with altitude. The direct heat source for the stratosphere is the Sun. Air in the stratosphere is stable because warmer, less dense air sits over cooler, denser air.

In Mesosphere temperature decreases with altitude. Few gas molecules present in mesosphere absorb sun's radiation.The heat source is the stratosphere below. The mesosphere is extremely cold, especially at its top, about -90°C.

Thermosphere which also contains ionosphere.The density of molecules is so low in here that one gas molecule could easily go upto 1 km before it collides with another molecule. It is so little energy is transferred, the air feels very cold

Which sugar or sugars are broken down by lactase? How do you know?

Answers

Answer:

Lactase breaks down lactose, the sugar in milk which is made of several parts.

Explanation:

Does Potassium have cations or anions?

Answers

Cations are what your looking for
Cations are positively charged and are present in Potassium

Where does the H+ come from that makes ATP synthase work?
Electron Transport Chain
Krebs cycle
Glycolysis

Answers

Electron transport chain

Select three types of land associated with the largest pore size of soil.

peat
swamp
beach
plains
clay
desert

Answers

Answer:

I believe the answers are beach, desert, and clay.

Explanation:

Sand is the largest mineral particle and it has more pore space between its particles.

its beach desert and clay i got it right

why do we need transcription?

Answers

Transcription is essential for videos that need subtitles or foreign language translation. The timestamps help synchronize the video and audio components of the file. Timestamps are likewise crucial to locate specific parts of the recording.

Which biomolecule provides the instructions to build enzymes?
A. Carbohydrates

B. Lipids

C. Nucleic acids

D. Proteins

Answers

The correct answer is D. Proteins

Enzymes are biological molecules (proteins) that act as catalysts and help complex reactions occur everywhere in life.

Hope this helps :D

Proteins are the building blocks of enzymes, and proteins are made up of amino acids that are linked together in one or more polypeptide chains. Therefore, option (D) is correct.

What are enzymes?

Enzymes are proteins that aid in the acceleration of metabolic processes, also known as the chemical reactions that take place in our bodies. They are responsible for the creation of some chemicals while also decomposing others. Enzymes are present in everything that is alive. Enzymes are something that are produced by our bodies spontaneously.

Enzymes regulate most biochemical reactions in animals, plants, and microbes, thus there are many examples. Animal digestive enzymes are well-known. Gastric juices break down food with the enzyme pepsin. Salivary amylase turns starch into sugar, starting digestion.

Learn more about enzymes, here:

https://brainly.com/question/14953274

#SPJ2

Q: Predict and describe some possible effects to your entire food web if the following happened:
A mysterious virus has sickened the secondary consumer fish. There
are few survivors. Fortunately, this virus is not affecting organisms on any other trophic levels. However, the loss of these organisms is
affecting the rest of the food web. Please describe the possible effects:

Answers

Answer:

Less fish will disrupt the predators in the ocean. Sharks, and other predators in these oceans need a food source such as fish if this Virus does indeed kill these many fish. Meaning the virus is in this fish, It might spred to predators that eat these fish. Still if the predators of the food chain dont find these food sources for them i am sure they will die of starvation.

Explanation:

If a food source for animals is obsulete i am sure the predators of the animals will have starved to death like how, the Hot blob is affecting the Cassins auklet due to the Less amount of phytoplankton in the oceans.

what is the force of a rock falling of a cliff if it has a mass of 0.4 kg?

Answers

Answer:

impulse=force x time

force=mass x acceleration due to gravity

force=

impulse =3000 x 2.5= ( sorry i don't have a calculator right now so you must calculate this yourself)

I converted from kg to g because it is the standard.

Explanation:

Plants and batteries both store

mechanical energy
electrical energy
chemical energy

Answers

They both store chemical energy

Describe the way convection works and how it might work within the earth? -geology question

Answers

Answer:

Magma in the Earth's mantle moves in convection currents. The hot core heats the material above it, causing it to rise toward the crust, where it cools. The heat comes from the intense pressure on the rock, combined with the energy released from natural radioactive decay of elements.

Explanation:

Patients generally report conscious awareness of posthypnotic suggestions. Please select the best answer from the choices provided T F

Answers

Answer:

false

Explanation:

edge 2020

Conscious awareness of posthypnotic suggestions is a false statement because it creates a subconscious.

What are posthypnotic suggestions?

The directive was given to the subject during a hypnotic trance that must be carried out once the subject awakens.

A post-hypnotic suggestion is essentially a specific directive to be followed after the hypnotherapy session to the subconscious.

An illustration of this would be going to a hypnotist for help with weight reduction and having the suggestion made that every time you feel like a sweet sort of meal, you will feel like drinking some water instead" ingrained in your subconscious.

Therefore posthypnotic suggestions of having conscious awareness are false statements.

Learn more about posthypnotic, here:

https://brainly.com/question/27333046

#SPJ6

When a bee visits a flower for sweet, sweet nectar, the plant's gametes are also spread to anoher plant. What kind of symbiotic relationship is this?

Answers

Answer:

Mutualism

Explanation:

Mutualism is a type of symbiotic relationship in which the two species of organisms involved benefit from one another i.e. the actions of one benefits the other.

In this question, a bee is said to visit a flower for sweet nectar, however, in the process of feeding on the flowers nectar, the plant's gametes are also spread to another plant by the bee. This is a type of MUTUALISTIC RELATIONSHIP because the plant is beneficial to the bee by providing food (nectar) while the bee also helps the plant by helping it pollinate.

What does an urn-shaped age pyramid represent?

Answers

Answer:

It represents young or rapidly growing population. In urn-shaped age pyramid, the number of reproductive individuals is higher than the number of pre-reproductive individuals. It represents declining or diminishing population with negative growth.

Sheela wants to demonstrate the importance of photosynthesis to plants and the other living organisms that eat plants. She models the process of photosynthesis that is specifically involved in the production of sugars.

Which process in the light-independent reactions of photosynthesis is she modeling?
the production of oxygen
the production of glucose
the production of carbon dioxide
the production of water

Answers

Answer:

the production of glucose

Explanation:

sugar=glucose

Request:

(Brainliest plzzz)

In this process, the light-independent reactions of photosynthesis are she modelling, and the production of glucose. Thus, option "B" is correct.

What is the chemical reaction of photosynthesis?

The chemical reaction of photosynthesis is given as follows;

6CO₂(g) + 6H₂O(l) + Energy from light → C₆H₁₂O₆(s) + 6O₂(g)

Six molecules of gaseous carbon dioxide (CO₂) combine with six molecules of liquid water (H₂O) in the presence of energy from Sunlight  to produce  one molecule of solid glucose (C₆H₁₂O₆) and six molecules of gaseous oxygen (O₂)

Thus, option "B" is correct.

To learn more about  photosynthesis  click here:

https://brainly.com/question/1757345

#SPJ2

What 2 molecules can be used to determine blood type?

Answers

Red blood cell antigens determine your blood group

Answer: The antigens expressed on the red blood cell determine an individual's blood group. The main two blood groups are called ABO (with blood types A, B, AB, and O) and Rh (with Rh D-positive or Rh D-negative blood types).

Whats the answer? I need help

Answers

Answer:

Its 26 I'd assume sorry if I'm wrong it was kind of hard to read the question.

Eukaryotic cells do NOT have a cytoplasm true or false

Answers

Answer:

False

Explanation:

False is the correct

Why is meiosis important in maintaining genetic diversity?

Question 6 options:

A Meiosis creates diversity by cutting each chromosome exactly in half.


B The two different chromosomes of the organism producing the sex cell (egg or sperm) are mixed up during crossover, creating a new combination of alleles.


C It creates sex cells (eggs or sperm) that have exactly the same alleles (version of a gene) as the parents.


D The chromosomes in meiosis are copied so they are exactly the same as the organism producing the gamete, except they have just one copy.

Answers

Answer:

We now know that meiosis is the process of chromosomal reduction which allows the production of haploid germ cells necessary for sexual reproduction. Meiosis is furthermore important for its role in enabling genetic diversity and facilitating the repair of genetic defects through recombination.

Explanation:

Brainliest please?

Meiosis is a specialized form of a cell division in which number of chromosomes is reduced to half. The reduction in chromosome number is achieved by one round of DNA replication and two rounds of chromosome segregation.    

Meiosis produces genetic variation by the process of recombination.Recombination occurs when two molecules of DNA exchange pieces of their genetic material. The process of recombination occurs during the prophase stage of meiosis I. In meiosis, crossing over occurs between the non-sister chromatids in a homologous pair (one from each parent) of chromosomes.

The correct answer is option B. The two different chromosomes of the organism producing the sex cell (egg or sperm) are mixed up during crossover, creating a new combination of alleles.

Other options-

A. Meiosis creates diversity by cutting each chromosome exactly in half - incorrect .In meiosis the chromosome number is reduced to half.

C. It creates sex cells (egg or sperm) that have exactly the same alleles (version of a gene) as the parents-incorrect. The sex cells produced are not genetically identical to the parent cell.

D. The chromosome in meiosis are copied so they are exactly the same as the organism producing the gamete, except they have just one copy-incorrect. In meiosis the chromosomes are not exactly copied.

Learn more about meiosis -

https://brainly.com/question/12327654?referrer=searchResults

   

10. True or false: During the light-independent reactions, ATP and NADPH are used to make glucose.

True
False

Answers

Answer:

true

Explanation:

i think not sure

Which student will most likely overcome their nerves?

A.one who thinks positively and practices the speech in advance
B.one who thinks positively and stays up late to practice the speech
C.one who gets plenty of rest and eats sugary foods for energy
D.one who gets plenty of rest and avoids practicing the speech

Answers

Answer:

A.one who thinks positively and practices the speech in advance

Explanation:

It makes more sense

Student will overcome their nerves who thinks positively and practices the speech in advance

Positive behaviour

The person who thinks positively and practices the speech in advance will most likely overcome their nerves because the positive behaviour has good effect on the personality of an individual. Those people who think negative, they will not get success in their life.

Practice's benefits

There is a saying that practice makes a man perfect. That person who regularly practice a specific topic, they can do the speech very well or other things in their life so we can conclude that student will overcome their nerves who thinks positively and practices the speech in advance.

Learn more about practice here: https://brainly.com/question/15886943

Learn more: https://brainly.com/question/19572792

Is it possible for it to rain at 0° F? (not snow)

Answers

im pritty sure no but my friend says yes somthing called frezzing rain sooooo

9. What type of bond is pictured in the image below?

a. covalent bond
b. ionic bond
c. metallic bond
d. electron bond

ONLY 9

Answers

Answer:

c. metallic bond

Explanation:

Metallic bonding, unlike other forms of atomic bonding, involves delocalized elections. The negatively charged electrons form a "sea" around metal cations. Electrons within the valence shells of metals are only held loosely within their molecular orbits- the metals are held together due to the strong attraction between these delocalized electrons and positive nuclei.

The electrons are typically described as mobile, free, and delocalized. These traits are responsible for several metallic properties such as:

electrical conductivityheat conductivityelectronegativitymalleability

Answer: Number 10 is also C

Explanation:

Do trees need energy in order to grow? If so, where does that energy come from?​

Answers

Answer:

the energy comes from sunlight

Explanation:

it's too simple...

Other Questions
Witch is equavalent to 2/3 all that are true I need to find the X and Y values please help thanks a. Identify at least three cases in your daily life/work where the analytics could be applied. b. Choose one of the cases and describe how you will approach the problem. For example, you can start from where/how you collect data, how to use the data, what kind of problem can be solved, and etc. find the kinetic energy of a ball of mass 200 grams moving at a speed of 20m/s 3.If mcomplement of State if the triangles in each pair are similar. If so, state how you know they are similar. Please help im so confused rn :(( what if the color is changed into black, how would that affect the information that the symbol is communicating?(Fb logo) completa estas oraciones con cul o cules. (pls help i will give brainliest) 2. What fluvial landform is A? 2.6x0.47pls helppls pls Find the inverse of the function f(x) = 2x - 4 PLEASE ANSWER THISS I NEED HELP ASAP!! How did women's roles change during the war? Choose five words from the novel you selected that appear in the vocabulary resource. Then write a sentence for each word that uses it correctly. (A wrinkle in time)Vocabulary:assuaged: made less painful; satisfiedatrophied: weakened and witheredcorrosive: gradually eating away at something, such as an acid; bitterly sarcasticcounteracted: acted against something to prevent or lessen its effectdespondency: depression due to loss of hopedistraught: very upset or agitatedfallible: capable of being wrong, mistaken, or inaccurateimperceptible: unnoticeable; impossible to sense; undetectableinadequate: not good enough; doesn't meet the requirementsjeopardize: put at risk or endangerperplexity: the state of being confused or puzzledprevail: to be greater in strength or influence; to triumph over or defeat an enemyreiterate: to say again; repeattrepidation: a nervous fear or worry about something that may happenunadulterated: pure, not mixed with other substances How does Ana spend her time in seedfolks? A 17.4 L sample of oxygen gas (O2) was collected at a temperature of 23.0C and a pressure of 2.18 atmospheres. What volume would the gas occupy at STP? The Millers budget is $90,240 annually.If both Mr. and Mrs. Miler each work 160 hours per month, what is the average hourly wage needed to meet the budget?Round to the nearest cent. Hey luvs I need help with this please help me can someone please help me