What is the value of the 2s in 2,200

Answers

Answer 1
Answer: The first two is worth 2,000 and the second is worth 200. 
Answer 2
Answer: The value of the 2s in 2,200: 2,200=2,000  2,200=200

RainyClouds


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There are 20 students in your class 3/5 of them pack a lunch which meant that will help you find the number of students in your class who pack a lunch

Answers

so 3/5 of 20 is what
'of' means multiply

3/5 of 20 means
3/5 times 20/1=(3*20)/(5*1)=60/5=12/1=12

12 pack a lunch

How can estimating quotients help you to place the decimal correctly

Answers

it gives a better virw on where to put things

a boy is 24 years younger than his father. In 2 years time the sun of their ages will be 40. Find the present ages of father and son

Answers

ooh fun

x=boy
y=father
x+24=y
(x+2)+(y+2)=40
subsitute x+24=y into equation
x+2+x+24+2=40
add like terms
2x+28=40
subtract 28 from both sides
2x=40
divide both sides by 2
x=son now=20
father=son+24
father=20+24=44

father=44
son=20
Let the age of the boy be x.
Therefore the age of the father = x + 24.  (The boy is 24 years younger implies that 
                                                           his father is older by 24 years).

In 2 years time:
The boy will be = (x +2).
The father will be (x +24 +2) = (x + 26).

Sum of their ages = 40.
Therefore            (x+2) + (x + 26) = 40.
                           x + x + 2 + 26 = 40
                                      2x + 28 = 40
                                              2x = 40 -28
                                               2x = 12.
                                                 x = 12/2 = 6.    x =6.
Present ages =  x , x +24.  =  6,  (6 +24) =    6, 30.
Boy = 6 years old.
Father = 30 years old.
Cheers.

When one number is a multiple of another, the GCF of the numbers is the greater of the numbers

Answers

Thats is true. U got that right.
This is never true since the GCF is a factor of both numbers. So the GCF is the smaller of the two numbers.

a prayng mantis is an interesting insect that can rotate its head 180 degrees.Suppose the praying mantis at the right is 10.5 centimeters long.What mixed number represents this length?

Answers

Answer:

The required mixed number is10(1)/(2).

Step-by-step explanation:

Consider the provided information.

It is given that praying mantis at the right is 10.5 centimeters long.

We need to find the mixed number represents this length.

Mixed number: Mixed numbers are the numbers which consists an integer and a proper fraction part.

Now consider the provided length 10.5

10.5 can be written as: 10 + 0.5

Here 10 is an integer, now we just need to change 0.5 into fractional form so that we can have a mixed number.

0.5 can be written as:

0.5=(5)/(10)=(1)/(2)

Thus, the number is 10+0.5=10+(1)/(2)=10(1)/(2)

Hence, the required mixed number is10(1)/(2).

The fact that it can turn its head 180 degrees is just extra information. They tell us that it is 10.5 cm long. What they're asking for is the length in a mixed number, so 10.5 as a mixed number.

At the local aquarium there are 10 dolphins 8 penguins and 4 whales what is the ratio of penguins to whales

Answers

A ratio compares two quantities.

penguins = 8
whales = 4

8:4 , now simplify

8/4 = 2
4/4 = 1

2:1 is the ratio.

Final answer: 2:1
A ratio compares 2 or more quantities. But when working with ratios you have to be VERY careful. What ever says to come in the ratio 1st it HAS to come first, cause if you change the order it will mess the ratio up. A ratio can be written in 3 ways:- 

a to b
a:b
(a)/(b)

Now lets look at the information we have:-

10 - dolphins
8 - penguins
4 - whales  

Now we need to find the ratio of penguins to whales. So it would look like this:-

penguins: whales
penguins to whales
(penguins )/(whales)
 
Penguins:- 8
Whales:- 4 

So, the ratio of penguins to whales would look like:- 

8 to 4
8:4
(8)/(4)

Now we will simply (8)/(4)

8 ÷ 4 = 2
4 ÷ 4 = 1 

So, our new simplified ratio would be:-  2 to 1. 2:1. (2)/(1).

Hope I helped ya!!