f(x)=(7x-2)(5x-8)(x+5)(x-6) has zeros at x=-5, x=2/7, x=8/5, and x=6.


What is the sign of f on the interval -5

Choose 1 answer:

(A) f is always positive on the interval.

(B) f is always negative on the interval.

(C) f is sometimes positive and sometimes negative on the interval.

Answers

Answer 1

Answer: always negative) :p

Explanation: khan :)

Answer 2

Answer:

always negative!

Explanation:


Related Questions

The three possible fates of light striking a photosynthetic pigment are _____, ____ and transmission

Answers

Answer:

The three possible fates of light striking a photosynthetic pigment are reflection, absorbance/absorption and transmission

Explanation:

The breathing rate of an aquatic animal is more than that of of a terrestrial animal . Why ?​

Answers

It has to filter out the small amount of oxygen in the water, unlike terrestrial creatures.

Answer:

Since the amount of oxygen dissolved in water is comparatively lower than that in air, the aquatic animals have to breath rapidly to take in sufficient oxygen. Thus, the rate of breathing in aquatic organisms is much faster than that seen in terrestrial organisms

What are the three parts of the cell theory?

Answers

Answer:

All living things are composed of cells.

Cells are the basic units of structure and function for living things.

All cells come from pre-existing cells. Also, organisms grow by “adding on more cells” NOT by increasing the size of their cells.

what two numbers between 10 and 20 have 6 as their GCF

Answers

The two numbers would be 12 and 18.

Match the type of stress to the correct type of plate tectonic boundary.

Answers

Answer:

compression:convergent

tension:divergent

shear:transform

__________ is needed in the body to make vitamin D, bile acids, and cortisol. Group of answer choices Phospholipid Cholesterol Lipase Triglyceride

Answers

Explanation:

Cholesterol is the correct answer

Delia is interested in finding ways to cure diseases. Which of the following career fields would best suit Delia’s interest?

animal biology
cytology
zoology
nuclear biology

Answers

Answer: D) Nuclear biology

Which part of the plant cell absorbs the energy needed for the process

Answers

Answer: chloroplasts

Explanation:

Integrated Science

Which group of substances can be found on the same side of the photosynthesis equation?


a.
Sugar and carbon dioxide


b.
Sugar and water

c.
Carbon dioxide and water


d.
water and oxygen​

Answers

C) carbon dioxide and water is the answer

Which process can cause chemical overheating

Answers

Answer:

Thermal Runaway

EX- Thermal runaway describes a process that is accelerated by increased temperature, in turn releasing energy that further increases temperature.

Explanation:

For a more simpler explanation , picture a pot of water and as you increase the volume of fire so does the energy (HEAT) inside . As air bubbles (ENERGY) start to quickly evaporate (BOILING) this actually increases the temperature inside causing Thermal Runaway.

What is the correct sequence in the transmission of a neural impulse?

Answers

Answer:

A nerve impulse begins when a neuron receives a chemical stimulus. The nerve impulse travels through the axon membrane as an electrical action potential to the axon terminal. The axon terminal releases neurotransmitters that carry the nerve impulse to the next cell

Explanation:

and i'm mexican

Which macronutrient promotes root growth?

Answers

Answer: Phosphorus (P)

Explanation: Phosphorus is one of the important macronutrients of plants which promotes the plant root growth.

Phosphorus in good amount would lead to -

• Extensive roots

• Fewer shoots

• Stunted growth

Whereas if the plant deficits Phosphorus then it would lead to

• Poor root growth

• Few flowers or aborted flowers

• No fruits

it can be said that all cells life begin and end with this process ?

Replication

Meiosis

Mitosis

Cytokinesis

Answers

Meiosis! I just learned this about the reproduction.

all cells life begin and end with this process by the process of meiosis

What is meiosis ?

Meiosis is the process  where a single cell divides twice to produce four four haploid daughter cells which are otherwise called as gametes; It can occur in two substages such as meiosis I and meiosis II.

Humans have 46 chromosomes in every cell,  where 23 chromosomes t came from one of our parents and 23 very similar chromosomes that came from the other parents.

Meiosis I consist of substages like Prophase I where nuclear envelope disintegrates, Chromosomes begin to condense, Spindle fibres appear.

Secondly Prometaphase I where Spindle fibres attach to the  centromere followed by Metaphase I where The homologous chromosomes align at the equatorial plate, Anaphase I where he homologous chromosomes move towards the opposite poles.

Telophase I where Spindle fibres disappear, Cytokinesis I where the cytoplasm and the cell division result in 2 non-identical haploid daughter cells.

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The Diagram shows structures that form the surface of the trachea.
Which level of organisation is the structure labelled S ?
A. Cell
B. Organ
C. Organ system
D. Tissue

Answers

Its the tissue that is labeled s

Structure S is a simple columnar epithelium, which is a type of tissue.

The diagram shows the structures that form the surface of the trachea. The trachea is a tube that carries air from the lungs. The surface of the trachea is lined with a layer of tissue called the epithelium. The epithelium is made up of cells that line the inside of the trachea.

The structure labelled S is a type of epithelium called a simple columnar epithelium. Simple columnar epithelia are made up of cells that are arranged in a single layer. The cells in a simple columnar epithelium are tall and column-shaped.

The simple columnar epithelium in the trachea helps to protect the trachea from infection. The cells in the epithelium produce a mucus that traps dust and other particles. The mucus is then carried away by the cilia, which are tiny hairs that line the trachea.

The other levels of organization in the diagram are organ, organ system, and cell. The trachea is an organ, which is a collection of tissues that work together to perform a specific function. The respiratory system is an organ system, which is a group of organs that work together to perform a common function. Cells are the basic units of life, and they are the building blocks of tissues, organs, and organ systems.

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what is the first part of the small intestine called?

Answers

Answer:

The first part of the small intestine is called duodenum

Explanation:

The small intestine is a tightly folded tube which connects to the stomach on the top end and to the large intestine on the bottom end.

The small intestine consists of three parts:

duodenumjejunum (absorbs sugars, amino acids, and fatty acids)ileum (absorbs remaining nutrients that did not get absorbed by the duodenum or jejunum)

Duodenum is responsible for completing the first phase of digestion. In this section of the intestine, food is mixed with enzymes and bile which help break down food.

Answer:

Duodenum

Explanation:

Duodenum is the first part where most of the small intestine digestion happens

Based on their locations on the periodic table, which best compares the properties of the metalloids arsenic (As) and
antimony (Sb)?
Arsenic has a more metallic behavior than antimony because arsenic's atoms have fewer electron shells.
O Arsenic has a more metallic behavior than antimony because arsenic's atoms have more electron shells.
Arsenic has a more nonmetallic behavior than antimony because arsenic's atoms have more electron shells.
Arsenic has a more nonmetallic behavior than antimony because arsenic's atoms have fewer electron shells.

Answers

Answer:

Arsenic has a more metallic behavior than antimony because arsenic’s atoms have more electron shells.

Explanation:

the person above me is wrong

A muscle contracts in response to an electrical signal that signals the ______________, the unit of contraction, to shorten.

Answers

Answer:

Sarcomere

Explanation:

A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main protein filaments—actin and myosin—which are the active structures responsible for muscular contraction.

Which is mixed with proteins to break them into amino acids?

Answers

Answer:

enzymes can breakdown proteins into amino acids

Answer: hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids

Explanation:

Which of the following statements is not true about heterotrophs?
Group of answer choices

Heterotrophs are classified as consumers.

Heterotrophs are at the base of most food webs.

Heterotrophs cannot make their own food.

Heterotrophs can consume autotrophs.

Answers

Heterotrophs are consumers, cannot make their own foods, and have some of them have the capacity to consume autotrophs. Hence, they are not at the base of most food webs.

Heterotrophs are organisms that have no capacity to manufacture their own foods, unlike autotrophs.

They depend on other organisms for their foods. Hence, they are known as consumers, unlike autotrophs that are called producers.

Heterotrophs are of different types:

Herbivores: those that consume autotrophs onlyCarnivores: those that consume meat onlyOmnivores: those that consume both autotrophs and meat.

Thus, heterotrophs do not occupy the base of food webs. The base of food webs are mostly occupied by autotrophs, the producers.

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Heterotrophs are at the base of most food webs is the statement that is false.

Heterotrophs are those that must consume organic matter from other living beings.

Autotrophic beings represent the base in the totality of the trophic cycles or food chains, since they constitute the producing link, they are capable of taking advantage of energy and inorganic matter to make their food.

Heterotrophs are characterized by not having the ability to produce their own food in their body, for this reason they need to consume the organic matter of other living beings.

Therefore, we can conclude that autotrophs are considered producers and are at the base of most food webs, while heterotrophs are considered consumers which could not survive without feeding on other organisms.

Learn more about heterotrophic organisms here:  https://brainly.com/question/1212341

The image shows an aspect of human culture. Whích aspect is illustrated in the image?

A. Tradition
B. Religion
C. Social organization
D. Language

Answers

The aspect of human culture illustrated in the image is language. Writing is one form of language.

Writing can be considered as a form of language, which that uses grammar rules to describe ideas and situations.

Writing is a system of symbolic communication composed of signs, meanings, and a code to link these signs with their corresponding meanings.

A written language can be defined as the schematic representation of a spoken/gestural language by using a writing system.

Learn more about language here:

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Answer:

D. Language

Explanation:

Correct just take my word.

Why is Sodium stored in oil?​

Answers

Sodium is kept immersed in kerosene because Sodium doesn't react with kerosene.

Chromosomes are made of ________ and __________?​

Answers

Answer:

thwy are made out of organisms and genetics

Answer:

Proteins and DNA organized into genes

Explanation:

Which are two molecular groups that distinguish proteins from carbohydrates?​

Answers

Proteins are different from carbohydrates due to the presence of

NitrogenCarbonHydrogenOxygen

Cross a heterozygous black rabbit with a heterozygous black rabbit. What is the

Genotype Percentages? What is the Phenotype Percentages? (How many will be

black, How many white? Percentages of BB Bb & bb)

Answers

Explanation:

Bb x Bb

1BB, 2Bb, and 1 bb

Let B=black fur allele(dominant) and b=white fur allele(recessive),

¾ of the rabbit will be black while ¼ will be white.

Hence,

¾×100%=75%

¼×100%=25%

how does a cystoplasm’s structure relate to its function

Answers

It is like jelly so that it can hold everything in place basically

Define bronchiole and alveoli.​

Answers

Answer:

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Your bronchioles are some of the smallest airways in your lungs. Inhaled air passes through tiny ducts from the bronchioles into elastic air sacs (alveoli). The alveoli are surrounded by the alveolar-capillary membrane, which normally prevents liquid in the capillaries from entering the air sacs.

This image shows a volcanic eruption in Hawaii with lava flowing into the sea.



Which statement best describes this eruption?

Its magma is high in silica.
Its magma has low viscosity.
Its gases are released in rapid bursts.
Its lava came from an explosive eruption.

Answers

The last one is right answer i think

Which process is absent in animal cells?


making proteins

chemical reactions

respiration

photosynthesis

Answers

Answer:

photosynthesis

Photosynthesis animal cells does not use a photosynthesis ☺️.

You contract an infection from an unknown pathogenic organism. Your doctor conducts a biochemical analysis of the pathogen and discovers that it contains chitin. The pathogen is most likely a

Answers

Answer:

Fungus

Explanation:

Chitin is a fibrous substance consisting of polysaccharides and forming the major constituent in the exoskeleton of arthropods and the cell walls of fungi. This would point to it most likely being a fungal agent. Hope this helps!

Chitin is a natural polymer and a nitrogenous carbohydrate. The cell walls of fungus pathogens are formed of the N-acetylglucosamine polymer chitin.

What are pathogens?

Pathogens are germs that enter, grow, and cause sickness in their host's body. It simply needs a host body to live.

Pathogens have the ability to circumvent the immune system. It likewise relies on body chemicals to survive. Depending on the kind, these bacteria can move from one host to another in a variety of ways.

What are fungus pathogens?

The plant is home to millions of fungus species. Not all of them are pathogenic. Only roughly 300 of them are capable of causing disease. Fungi can be found on the surface of your skin or inside your food. They only cause illness if they overgrow.

Fungi have two protective layers, a membrane, and a cell wall, and they are difficult to destroy. The severity of a fungal infection might vary.

What are the examples of fungus?Ringworm.Vaginal yeast infection.Jock itch. Other fungi

Thus, we can conclude that the unknown pathogenic organism is fungus because fungus pathogens contain chitin.

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Which equation represents the photosynthesis process?
a
CO2 + Glucose ----> H2O + Sunlight + O2

b
CO2 + H2O + Sunlight ----> Glucose + O2

c
CO2 + H2O ----> Glucose + O2

d
Glucose ----> CO2 + Alcohol + ATP

Answers

Answer: B

Explanation:

................

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