How many rational numbers are there between -10 and 10

Answers

Answer 1
Answer:

There is an infinite amount of rational numbers between -10 and 10.

A rational number is ant number that can be expressed in simple terms, this includes decimals.

Answer 2
Answer:

Answer-1

Step-by-step explanation:


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Dawn bought 12 grams of chocolate. she ate half of the chocolate. How many grams of chocolate did she eat?

Answers

Dawn ate 6 grams of chocolate.

What is Division method?

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

Dawn bought 12 grams of chocolate.

Here, She ate half of the chocolate.

Hence, The amount of eat chocolate = 12 / 2 grams

                                                          = 6 grams

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6 grams. you just divide it in half.

Sammy the turtle can walk 1/8 of a mile in an hour.How many hours will it take him to walk 1 1/4 miles?

Answers

The required time, that turtles take to walk 1 1/4 miles is 20 hours.

What is speed?

Speed is defined as when an object is in motion, the distance covered by that object per unit time is called speed.

here,
Sammy the turtle can walk 1/8 of a mile in an hour.
Speed = 1/8 mils per hour


Time = distance / speed
Time = 1 1/4 / 1/8
Time = 5/4 × 8/1
Time = 20 hours

Thus, the required time, that turtles take to walk 1 1/4 miles is 20 hours.

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Sammy walks 0.125 miles/hour
1 1/4 miles = 2.75 miles
2.75miles ÷ 0.125 miles/hour = 22

It will take Sammy 22 hours to walk 1 1/4 miles.

lucy has $25 in her piggy bank. She plans to add $5 per week until she has a total of $75. (Let your variable be x).

Answers

Answer:

75=5x+25

Step-by-step explanation:

Answer:

25 + 5x = 75

x = the number of weeks it takes to reach $75

What fraction is equivalent to 0.25

Answers

The value of the fraction is 1/4

How to determine the fraction

First, we should know that fractions are defined as the part of a whole number, a whole variable or a whole element.

The different types of fractions are;

  • Simple fractions
  • Improper fractions
  • Proper fractions
  • Complex fractions
  • Mixed fractions

From the information given, we have that;

0. 25

Find tje denominator

25/100

Divide into simpler terms, we get;

1/4

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1/4th is equivalent to 0.25. if you look at it like you would 4 quarter into a dollar.

It costs $95 for 20 students to visit an aquarium. How much does it cost for 162 students?

Answers

Set up a proportion:

(dollars)/(students) =  (dollars)/(students)
(95)/(20)= (x)/(162)

Now cross multiply:
95*1620=15390
20*x=20x

Set it up as an equation:
15390=20x

Divide both sides by 20:
15390/20
 
And you get:
x=769.5

But you cannot have a half of a student so you will round it up:

x=770 students.

162 students* ($95/ 20 students)= $769.50

The final answer is $769.50~

How do you make zero pairs ?

Answers

Zero pairs can be (+1)+(-1)=0.