Two brothers are participating in a race. The older brother's average speed is 6 miles per hour and he finishes the race in 1 hour and 20 minutes. If the younger brother's average speed is 4 miles per hour, how long will it take him to complete the race?

A.) 45 min

B.) 2 Hours

C.) 4 Hours

D.) 30 min

Answers

Answer 1
B). 2 Hours
Explanation if the older brother can run 6 MPH and it’s takes him a hour and twenty minutes you automatically can say it’s at least 6 miles then you have to see how many he can run in 20 minutes which is roughly 2 miles so that would mean he run for 8 miles if the younger brother can run 4 MPH then you just have to add that by 2 too see how long it will take to run 8
Answer 2
The answer is 45 for this just plug in your variables to the equation

Related Questions

This is science and i looked it up but i dont know what it is so someone please help that would be nice

Answers

C. COMMUNITY !! Should be the answer

Answer:

I'm pretty sure its answer B

If active transport establishes a concentration gradient with the use of ATP, then the concentration gradient can be looked at as

Answers

Answer:

potential energy

Explanation:

It can be looked at as Potential energy

This mechanism shows the conversion of ozone to oxygen in the upper atmosphere. What is the overall reaction from the mechanism? Step 1: Cl + O3 → ClO + O2 Step 2: O + ClO → Cl + O2 A. O3 + Cl → O2 + ClO B. O3 + ClO → 2O2 + Cl C. 2O3 → 3O2 D. 3O2 → 2O2

Answers

Answer:

its B. O3 + ClO → 2O2 + Cl

Explanation:

I just took the test and got it right

Click Play and wait for the vibrations to stop. Suppose you were at the recording station when the earthquake hit. Based on the pattern of waves on the seismogram, what did you experience during the earthquake? (Search: Earthquakes 1 – Recording Station on gizmo)

Answers

Answer:

vibrations and lots of girls screaming for sure

Explanation: and I dont know if this conts

which body system completes the organizational series below
muscle cell - cardiac tissue- heart - ______ -human

a. integumentary system
b.respiratory system
c.circulatory system
d. skeletal system

Answers

answer: respiratory system
Circulatory System!

Hope this helps! Sorry if Im wrong!

Can brass rust?
T or F

Answers

False, that’s why we use it in plenty of things
false
your welcome:)

What purpose does air conditioning serve?

Answers

Answer:

AC does more than just keep you cool

Explanation:

For most people, the most important function of an air conditioner is its cooling power. However, cooling is in reality just one of the 3 vital functions of an AC system.

Most air conditioning systems use underground pipes to store and reject heat. To generate a climate in a room that is comfortable for people, air conditioning is mostly used.

What is air conditioning?

The term "air conditioning" is frequently used to refer to the machinery employed in the process of eliminating heat, cold, plus moisture from the inside of a populated place.

The exterior unit's compressor liquefies the refrigerant during cooling to remove heat. Conversely, while heating a room, heated pressure gas produced by the outside unit's heat exchanger or compressor is condensed enough heat the air. Most air conditioning systems use underground pipes to store and reject heat. To generate a climate in a room that is comfortable for people, air conditioning is mostly used.

Therefore, to generate a climate in a room that is comfortable for people, air conditioning is mostly used.

To learn more about air conditioning, here:

https://brainly.com/question/363704

#SPJ6

draw the model on the picture below and read the question carefully

Answers

Answer:

HEYYYAAA

ITS

ME

HERE

TO

HELP

YOU

How does the mass of and distance between the Sun and the Earth impact the number of days in a year?

Answers

Answer:

Gears A and B work together. Gear A turns 30 times when Gear B turns 45 times. When Gear B turns 12 times, how many times does Gear A turn?

We use Kepler's third law to find the correct answer is:

The period (year) of the plant increases with increasing distance to the Sun The period is independent of the mass of the Planet The period is inversely proportional to the masses of the Sun

Kepler's third law is a direct application of second Newton's law the motion of the planets around the Sun, if we assume that the orbit is circular the deduction is

            F = m a

where F is the force of attraction between the Sun and the planet, m is the mass of the planet and a is the ccentripetal acceleration.

The force is given by universal gravitation law, which says that the force of attraction between two bodies is directly proportional to the mass of the bodies and inversely proportional to the square of the distance between them, this force is attractive

          F = [tex]G \frac{M \ m}{r^2}[/tex]

where G is the universal constant of attraction, M the mass of the Sun, m the mass of the plant and r the distance between them

From kinematics we know the expression of the centripetal acceleration

          a = [tex]\frac{v^2}{r}[/tex]

we substitute

         [tex]G \frac{M \ m}{r^2 } = m \frac{v^2}{r}\\G \frac{M}{r} = v^2 \\[/tex]

         

As we assumed a circular orbit, the velocity of the planet in the orbit is constant, so the kinematic relations of uniform motion can be used.

The distance traveled by the planet is the length of the circle

       d = 2π r

       v = d / T

where T is the period of the orbit

       v = 2π r / T

we substitute

       [tex]G \frac{M}{r} = \frac{4 \pi ^2 r^2 }{t^2}\\T^2 = ( \frac{4 \pi ^2}{G \ M} ) \ r^3[/tex]

The year is the duration of the period of the planet's orbit around the Sun, with the previous expression it is observed that the period (year) increases when the radius of the orbit increases with a power of 1.5, in summary the planets more far away has duration of the greater anus

The constant in parentheses is inversely proportional to the greater of the Sun, that is, for more massive stars the period decreases

The period is in dependent on the mass of the planet, therefore any object at the same distance has the same duration of the period or the year of the planet.

In conclusion we use Kepler's third law to find the correct answer is:

The period (year) of the plant increases with increasing distance to the Sun The period is independent of the mass of the Planet The period is inversely proportional to the masses of the Sun.

Learn more about Kepler's third law here:

https://brainly.com/question/1819012

Which of the following facts about the ocean water indicates that the ocean is a major resource of nutrients?
A.
Nearly a third of the world's known oil resources are found underneath the ocean floor.

B.
100 mL of ocean water contains millions of bacteria and hundreds of thousands of phytoplankton.

C.
The oceans cover almost three-fourths of the world's surface.

D.
Ocean water becomes denser as its salinity increases or its temperature decreases.

Answers

I believe it’s B
Have a good day

In an ecosystem comprising of the oceans, the fact  the ocean is a major resource of nutrients is that 100 ml of ocean water contains millions of bacteria and hundreds of thousands of phytoplankton.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

Learn more about ecosystem,here:

https://brainly.com/question/1673533

#SPJ2

Please help me decode the first three letters. The answer has to be alphabetical without spaces- all lower case

Answers

Here's what I got:

microscope

hope you get an A friend!!

In order for a bowling ball and a soccer to accelerate the same distance the force applied ... *

A. to the soccer ball is greater than the bowling ball
B.to the soccer ball is less than the bowling ball
C.to the bowling ball is greater than the soccer ball
D.to the bowling ball is less than the soccer ball

Answers

ANSWER:

The answer is A

The correct answer would be A

Place one seashell in each cup. Let the cups stand undisturbed for three days. After three days, record your observations.

Answers

it probably breaks apart or something

what are the largest to smallest wavelengths ?? (will give brainly)

Answers

radio wave, microwave, infrared, visible light(red visible, orange visible, yellow visible, green visible, blue visible), ultraviolet, x-rays, gamma radiation

hhheeeeelllllppppppppp

Answers

Answer:

A gsjebdvxgjdkelsöeösldcj

Answers c. Thank me later

ok yall l have to write a essay about Pretend that you are the moon. What would you say? Describe yourself to others based on what you have learned about the moon in class. How does your surface reflect light? Do you always look the same? How long does it take you to revolve around the Earth? Do you have an axis like the Earth? Where do you go during the day? What would you see in space?
can yall do it for me

Answers

Answer:

       If I was the moon, I would say that space is amazing. Past the years, I had been walked on by many people. I think they are called astronauts. The first person that put their feet on me was Neil Armstrong. He had a white thick coat and a helmet. I had been flagged by Buzz Aldrin but, the flag been flat on the ground since the moment Aldrin and Neil Armstrong lifted off. I couldn't do anything about it but, that flag made me feel special. I remember that the flag had about 50 white stars on the corner, in the corner was filled with blue where the stars were, red, white stripes. I shine because my surface reflects light from my friend, the sun. Many people ask me, "Do you always look the same?" No, everyone sees the same phases of me, the moon. I go through a process called moon phases. They are first Waxing Crescent, First Quarter, Waxing Gibbous, Full Moon, Waning Gibbous, Last Quarter, Waning Crescent, New Moon. I rotate on my axis. One rotation takes nearly as much time as one revolution around Earth I believe. During the day, I go the the other side of the earth, where the Earth's shadow is. Honestly, I enjoy being the moon. It's fun and I enjoy the white little twinkling stars beside me. I like seeing that little world move.

describe the differences of the kinetic energy of a cold water solution to that of a hot water solution

Answers

Answer:

Here are the differences between the hot and cold water. The particles in the hot water move faster than the particles in the cold water.

Explanation: I hope this helped you!!!!!!!:)

The kinetic energy is in relation to the temperature. In cold water, the molecules in the water moves slower and gives off less heat. Which also means it has a lower temperature and lower kinetic energy. Hot water is the opposite. The molecules move faster and have a higher kinetic energy. It has a higher temperature too.

Substances that accept hydrogen ions from other substances are known as a/an__________.
1) molecule
2) acid
3) base
4) element

Answers

The correct answer is #1 molecules
Molecules hope this helps

Which movement of gases in cells should occur for the burning of food and the release of energy?


A. oxygen in and carbon dioxide in
B. oxygen in and carbon dioxide out
C. oxygen out and carbon dioxide in
D. oxygen out and carbon dioxide out

Answers

Answer:

B. is the correct answer.

it was observed that the atoms of a substance had so much energy that it separated the electrons and protons of the atom what is most likely the state of matter of the substance? gas liquid plasma solid

Answers

Answer:

Plasma is a substance which is extremely hot. The heat present in plasma, a gas, is provided as energy in order to split electrons and protons apart. Therefore, ions and electrons are formed as products.

Explanation:

The state of matter  of the substance where in the electrons and protons are separated from the atom is plasma.

What is matter?

Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume . The matter is composed up of atoms which may or not be of same type.

Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.

The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.Matter can neither be created nor destroyed which is given by the law of conservation of matter.

Learn more about matter,here:

https://brainly.com/question/12972782

#SPJ5

What is the softest metal??

Answers

Cesium is the softest metal

What will NOT speed up the net rate of diffusion for glucose into a cell?

Answers

Decreasing the number of phospholipids in plasma membrane.

Hope that helps!

hey i need help on this for science

Answers

Answer:

Reactants: sunlight, oxygen, carbon dioxide

porducts:water, glucose

Explanation:

HELPPP MEEEE PLSSS


Which statement describes one feature that maps and globes share?


Both are spherical.

Both show seafloor features.

Both are scale models.

Both are two-dimensional.

Answers

Answer:

both are scale models

Explanation:

Answer:

both are scale models

Explanation:

well a map can't be spherical and they do not show features of the seafloor and a globe is not 2 dimensional so the last we have is scale models

A student’s experiment showed that her egg gained mass overnight with the vinegar and distilled water. She had about a +1% change for distilled water. She had hypothesized that the egg’s mass would not change significantly with vinegar. She concluded that her hypothesis about vinegar was not supported because it did change in mass. Her teacher told her that the data indicated that her hypothesis was supported, especially with the 10% change for the distilled water. What did the teacher mean?

Answers

Answer:

the teacher means that if she had done more research she wouldve had a better result

Explanation:

ANSWER ASAP


The diagram below represents the rock cycle.


The diagram shows 3 rectangular boxes labeled Igneous rock, metamorphic rock, and sedimentary rock and 2 ovals labeled Magma and Sediment. There are 9 arrows. One arrow points from igneous rock to magma, one arrow points from igneous rock to metamorphic rock, one arrow points from igneous rock to sediment, one arrow points from magma to igneous rock, one arrow points from metamorphic rock to magma, one arrow points from metamorphic rock to sediment, one arrow points from sedimentary rock to metamorphic rock, one arrow points from sedimentary rock to sediment, and one rock points from sediment to sedimentary rock and is labeled A.


Which process is represented by the label A?


Compaction and cementation

Deposition and transportation

Heat and pressure

Weathering and erosion

Answers

The answer is C heat and pressure

What is the second lightest element on the periodic table

Answers

Answer:

Helium

Explanation:

please give me an example of freezing, melting, vaporization, evaporation, condensation, sublimation, and deposition

please i will mark brainliest!!!

Answers

Answer:

hi this is my first day here :) I can help ,(ig lol) freezing: Formation of snow, transferring water into ice in an ice cube tray

Melting: an ice cube melting into liquid, melting butter in a hot pan

Vaporization: when water is boiled on the stove to cook some pasta

Evaporation: rain cycle and sweating

Condensation: dew forming on grass in the early morning

Sublimation: dry ice and heave co2

Deposition: frost

Answer:

Freezing- putting water in the freezer to make ice

melting- defrosting food or drinks

vaporization- boiling water

condensation- water gathering together

sublimation- dry ice

deposition- the forming of sand dunes

Explanation:

HELP!!!! I WILL MARK BRAINLIEST WHOEVER ANSWERS FIRST

Answers

Answer:

I answered first, give me brainliest

Explanation:

How is a gas different from a solid or liquid (if you insert JUST AN ANSWER without ANY explanation, I will not except.)
a. a gas is made up of tiny particles
b. a gas has volume
c. a gas expands to fill the container
d. a gas has density

Answers

The correct answer is C.

Because, first, solids only take up space if’s large enough to take up all the space. Second, liquids only take up space if it has enough liquid to take the space of the container. And, lastly, gas is take up space because, it expands & it will keep expanding until it filled up everything in the container

You’re welcome :)
Maybe the answer is C

PS: Sorry if I’m wrong
Other Questions
When did the fall of Roman empire occur PLEASE HELP! Which of the following expressions are equivalent to (x+y) - (-z)?A) (x+y)-zB)x+(y+z)C) none of the above How many solutions does the equations 2m + 4 (m-3) = 7m - 4 have? can i have some help maybe some pointers how to write an effective conclusion paragraph. You do not need to tell a teacher you have downloaded anything as long as it did not save to your computer.a. Trueb. False b has 2 apples and c has 2/3 apples how many apples dose c have Explain the impact that theunification of Germany had.In a complete sentence $6,000 at 6%for 8 yearsWhat is the amount of interest earned The sum of two numbers is 23. The sum of the smaller and 2 times the larger is 36. Find the numbers.AnswerHow to enter your answerlarger number:smaller number: Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from =3 to =1. Review the work showing the first few steps in writing a partial fraction decomposition.StartFraction 2 x squared + 15 x + 19 Over (x + 4) cubed EndFraction = StartFraction A Over x + 4 EndFraction + StartFraction B Over (x + 4) squared + StartFraction C Over (x + 4) cubed EndFraction2x2 + 15x + 19 = A(x + 4)2 + B(x + 4) + C2x2 + 15x + 19 = Ax2 + 8Ax + 16A + Bx + 4B + CWhich system of equations can be used to determine the values of A, B, and C? please help im so confused, its geometry! Please Graph y > 3x - 6y < 3x + 2 The Liberal Democrat, Conservative, and Labour parties are all political parties in __________.A.EnglandB.FranceC.BelgiumD.GermanyPlease select the best answer from the choices providedABCD Which step in PCR (polymerase chain reaction) is responsible for opening and unwinding the DNA strand to be analyzed?A) bindingB) elongationC) denaturationD) annealing help me please i dont understand Hi I am student of languages and I need know if my answers are correct. Help me How tall would the lighthouse be?... Which test tube in the experiment best represents a normal stomach?A. Protein + hydrochloric acidB. Protein + pepsinC. Protein + pepsin + hydrochloric acid < (I think?) D. Protein + water If p:q=2/3:3 and p:r=3/4:1/2, calculate the ratio p:q:r