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Recently Posted Questions

Posted in Mathematics

How to find greatest common factor 45 and 81

Find the common factor and then choose the greatest (biggest one)

45= 3,5,9,15,45

81= 3,9,27,81

The common factors are 3 and 9
The greatest common factor (GFC) is 9 

Posted in Arts

What is a quarter past 5 mean

It means what is the time if it is one fourth or a quarter of an hour later than 5. one hour is 60 minutes and a quarter of an hour is 15 because 60/4=15. 5:00+:15=5:15

Posted in Social studies

How is the coastline of new jersey different from the coastline of Maine

Maine's coast is more rugged/rocket than New Jersey. Carved by glaciers,coastal Maine is dotted with many bays,harbors and islands.New jerseys coastline by contrast is defined by offshore barrier islands with expansive bays protected by the barrier islands

Posted in Mathematics

what is 0.3 x0.6 this is new to me

0.3 X 0.6 = 0.18
It's the same as 3 x 6 = 18 but it's in decimal form

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Posted in Mathematics

What is 17% as a fraction in simplest form

It's 17 over 100, it goes no lower because 17 is a prime number

Posted in Mathematics

Ms groves had trays of paint each tray has five colors one of the colors is purple.what fraction of the colors in 20 trays is purple

The correct answer is:
 \frac{4}{20} =  \frac{1}{5} .

Explanation:
Since 1 out of 5 trays are purple, this means the fraction is 
 \frac{1}{5} .
However, to find the number of trays out of 20, we multiply 20 by 
 \frac{1}{5} :
 20* \frac{1}{5} = \frac{20}{1} *  \frac{1}{5} =  \frac{20}{5} = 4.

Posted in Mathematics

116% as a fraction or mixed number

116% = 116/100 = (116:4)/(100:4) =

= 29/25 = 1 4/25

Posted in English

8x+15=3x-20 how do you do this

Solve for x

8x + 15 = 3x - 20
Add 20 to both sides. It should become
8x + 35 = 3x
Then minus 8x on both sides, which is now
35= -5x
Divide both sides by "negative" 5 to get x by itself
X= -7

Check your answer by substitution. (Plug -7 for x)

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Posted in Mathematics

X=5y. y=10x+20 Help please

Y=10x+20
y=10×5y+20
y=50y+20
-20=50y-y
-20=49y
y=-20/49

Posted in Geography

What biome is New Caledonia considered?

New Caledonia is considered to be a Terrestrial biome, with Tropical and Subtropical Dry Broadleaf Forests.

Posted in Mathematics

Solve using elimination, 2x+5y=2 3x-5y=53

      2x + 5y =2
 (+) 3x - 5y =53
-------------------------
      5x + 0 = 55

Then finish it.

5x = 55
x = 11

Substitute x = 11, 

2(11) + 5y = 2
22 - 2 + 5y = 0
20 + 5y = 0
5y = -20
y= -4

Posted in Mathematics

Solve using substitution, y=2x+5 y=6x+1

Y = 2x+5
y = 6x+1

Just substitute. 

y = 2x+5
6x+1 = 2x+5
6x-2x = 5-1
4x = 4
x = 1

Then, insert x = 1 into one of the equation. Let's say I choose number one.
y = 2x+5
y = 2(1) + 5
y = 7

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Posted in Geography

Describe how the Hawaiian Islands were formed and how they are evidence for mantle plumes.

 Hawaiian Islands are volcanic islands so they were created by underwater volcanoes and as they erupted, the land was created.

Posted in Social studies

What is the historical significance of a republic

Republic comes from the Latin word "respublĭca" which means; "Thing publishes" or "I publish it".

In its initial consideration, the republic was considered as a form of government in which the country is conceived as something of "public" character, that is, the governors cannot establish the privatization of the country's assets. Also, the main powers within the republic could not be inherited as it happened in the monarchy, on the contrary, they should be chosen by the people.

I hope this information can help you.

Posted in Biology

How do plant populations in a community change over time?

Plant populations in a community can change over time. This is also known as Evolution or Succession. Communities of plants are established and then change over time as the external environment in which they live changes. The external environment can change in the following ways: 1.    Climate changes: e.g. drought conditions, floods and global warming. 2.    Increase or decrease in animal and human population e.g. some plants are eaten by herbivorous animals and people. 3.    Ecological Disasters affect the growth of plants in a community. For example, the Wild Flower population in the Western Cape region of South Africa regenerates itself through fire. If wildfires do not occur, the wildflower population dies out. On the other hand fire also destroys large forested areas and the plants take a while to regrow, if ever. This is just a small sample of how plant populations change over time. 

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Posted in Mathematics

6 divded by 2/3 = what

You keep the first number the way it is, and multiply by the reciprocal of the second number so:

6/1 * 3/2

6*3=18
1*2=2

So then you have 18/2 which is 9

Posted in Chemistry

What are three physical properties of aluminum foil

Aluminum foil is a metal so it has the typycal properties of metals. These are the three most representative properties of metals that aluminum foil exhibit:


1) It is good conductor of electricity: this property is consequence of the metallic bond, which permits that the outermost electrons of each atom can flow through the entire network of atoms conducting the electricity.


2) Is is good conductor of heat: this other property of metals is due to transmission of vibration that is carried out between neighboring atoms.


3) it is ductile: this property means that the metals can be formed into foils.


Other properties that can be mentioned are: solid at room temperature and mallealble (can form wires)

Posted in Chemistry

What are 3 physical properties of aluminum foil

Solid, ductile (can conduct heat), malleable (can be shaped differently).

Posted in Mathematics

A grade has 81 girls and 72 boys. The grade is spilt into groups that have the same ratio of boys to girls as the whole grade. How many girls are in a group that has 16 boys?

There are 81 girls to every 72 boys in total, which can be represented by 81/72, which put into decimal form, is 1.125. If you then take the number of boys in the group, 16, and multiply it by this number (because the problem states that the ratio is constant) you can find the number of girls in the group.

16*1.125=18

So there are 18 girls in a group with 16 boys.

Posted in Mathematics

what is 7/5 as a decimal number

To convert a fraction to decimal simply divide the top number by the bottom number. This would give you 1.4. Hope this helped!

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