Which pair of ratios is proportional? A. 5:7 and 25:35 B. 6:9 and 18:36 C. 9:18 and 16:36 D. 35:120 and 75:250

Answers

Answer 1

Answer: one way is to make into fracitons and simplify

A.5/7=25/35?
yes, true

B. 6/9=18/36?
no

C. 9/18=16/36?
no

D. 35/120=75/250?
no

another way is
if a/b=c/d, then (ad)/(bc)=1 or ad=bc

A is answer

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a community bike ride offers a short 5.7 mile ride for children and families. the short ride is followed by a long ride, 5 2/3 times as long as the short ride, for adults. if a woman bikes the short ride with her children, and then the long ride with friends. how many miles does she ride together?
Can someone show me the steps?10m - 2/5 = 9 3/5

Can someone show me the graph and domain and range for this piece wise function?

Answers

For the graph you can use Desmos and for both you can use Wolfram Alpha

Whats the gcf of 48 and 78

Answers

The greatest common factor (GCF) of 48 and 78 is: 6

Factors of 48: 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
Factors of 78: 1, 2, 3, 6, 13, 26, 39

The common factors between the two numbers are 1, 2, 3, and 6, but considering 6 is the highest number out of them, it is the greatest common factor.

we must find prime factoriztion 4 getting GCF

FACTORS OF 48 : 1,2,3,4,6,8,12,16,24 & 48
FACTORS OF 78 : 1,2,3,6,13,26,39 & 78

WE can see the common factors of 48 and 78 are: 1,2,3 & 6
it means the GCF of 78 & 48 is 6

At the beginning of the week, Stewart's checking account had a balance of $-12.07. On Monday morang he deposited acheck for $216.45, on Tuesday, morning he deposited another check for $100.00. How much was in Stewart's checking
account after the second deposit?

Answers

Answer:

dez nutz got em

Step-by-step explanation:

Answer:

Step-by-step explanation:

Please do number 11 on the packet and explain please

Answers

Okay. You have seven of her hands, and they are all 5/12 of a foot long.
There are two ways to do this: multiply or add, which ever you have been doing in class.
Adding way: 5/12 + 5/12 +5/12 + 5/12 + 5/12 + 5/12 + 5/12 = 35/12 You would need to turn it into a mixed number, which would be 2 11/12
Multiplication way: 7/1 x 5/12 = 35/12, same as 2 11/12.

Hope this helped, and feel free to ask more questions if you need!! (:

How black hole does work.

Answers

Answer:

when a star gets big it pops and might make a black hole

A black hole is a region in space where the pulling force of gravity is so strong that light is not able to escape. The strong gravity occurs because matter has been pressed into a tiny space. This compression can take place at the end of a star's life. Some black holes are a result of dying stars.

Because no light can escape, black holes are invisible. However, space telescopes with special instruments can help find black holes. They can observe the behavior of material and stars that are very close to black holes.

How Big Are Black Holes?
Black holes can come in a range of sizes, but there are three main types of black holes. The black hole's mass and size determine what kind it is.

The smallest ones are known as primordial black holes. Scientists believe this type of black hole is as small as a single atom but with the mass of a large mountain.

The most common type of medium-sized black holes is called "stellar." The mass of a stellar black hole can be up to 20 times greater than the mass of the sun and can fit inside a ball with a diameter of about 10 miles. Dozens of stellar mass black holes may exist within the Milky Way galaxy.

The largest black holes are called "supermassive." These black holes have masses greater than 1 million suns combined and would fit inside a ball with a diameter about the size of the solar system. Scientific evidence suggests that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a ball with a diameter about the size of the sun.

How Do Black Holes Form?
Primordial black holes are thought to have formed in the early universe, soon after the big bang.

Stellar black holes form when the center of a very massive star collapses in upon itself. This collapse also causes a supernova, or an exploding star, that blasts part of the star into space.

Scientists think supermassive black holes formed at the same time as the galaxy they are in. The size of the supermassive black hole is related to the size and mass of the galaxy it is in.

If Black Holes Are "Black," How Do Scientists Know They Are There?
A black hole can not be seen because of the strong gravity that is pulling all of the light into the black hole's center. However, scientists can see the effects of its strong gravity on the stars and gases around it. If a star is orbiting a certain point in space, scientists can study the star's motion to find out if it is orbiting a black hole.

When a black hole and a star are orbiting close together, high-energy light is produced. Scientific instruments can see this high-energy light.

A black hole's gravity can sometimes be strong enough to pull off the outer gases of the star and grow a disk around itself called the accretion disk. As gas from the accretion disk spirals into the black hole, the gas heats to very high temperatures and releases X-ray light in all directions. NASA telescopes measure the X-ray light. Astronomers use this information to learn more about the properties of a black hole.

Could a Black Hole Destroy Earth?
Black holes do not wander around the universe, randomly swallowing worlds. They follow the laws of gravity just like other objects in space. The orbit of a black hole would have to be very close to the solar system to affect Earth, which is not likely.

If a black hole with the same mass as the sun were to replace the sun, Earth would not fall in. The black hole with the same mass as the sun would keep the same gravity as the sun. The planets would still orbit the black hole as they orbit the sun now.

Will the Sun Ever Turn Into a Black Hole?
The sun does not have enough mass to collapse into a black hole. In billions of years, when the sun is at the end of its life, it will become a red giant star. Then, when it has used the last of its fuel, it will throw off its outer layers and turn into a glowing ring of gas called a planetary nebula. Finally, all that will be left of the sun is a cooling white dwarf star.

Hope I can help you!

Ten video games cost $145

Answers

I kinda doubt that but ig it depends. Usually the they’re like $60 each unless you get a good deal for em.

Answer: $14.5 per game
Each game costs 14 dollars and 5 cents.

All you do is divide 10 into 145 to get your answer

Answer:

each video game costs 14.5 dollars

Step-by-step explanation:

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