57 Answered Questions for the topic Real Numbers

Real Numbers Complex Numbers

11/04/16

Determine all possible combinations of real and complex numbers that the polynomial function has and explain how you know

the function is ax^5-bx^2+cx-d what got me confused is that there are letters not numbers.
Real Numbers

10/03/16

No integers are irrational numbers true or false

which statement is false 
Real Numbers Prime Numbers

09/14/16

a boy with a collection of marbles realises that if he makes a group of five or six marbels at a time there are always two marbles left can you explain why the

confused between concept of real numbers and prime number used in the question
Real Numbers

04/10/16

real numbers

find HCF of 72 and 120 and express it as linear equation of 72and 120
Real Numbers

04/08/16

real numbers

show that there is no positive integer n for which √n + √n - n is rational
Real Numbers Math

03/08/16

Find all real number solutions x^4-x^2-12=0

Stuck on this one. Can anyone help?

Writing expressions in the form of....

Please help, I am so lost! The question states: Use properties of real numbers to write the expression (5a)(10b+7c−3d) in the form of K⋅ab+M⋅ac+N⋅ad Then, I must give three answers: The number... more
Real Numbers Word Problems

12/18/15

positive real number

Find a positive real number that is 2 smaller than its reciprocal
Real Numbers Math Calculus Precalculus

11/18/15

Solve For All Values of X

Solve for ALL values of x in the real number system.  If an EXACT solution does not exist, round your answers to the nearest hundredth.   sin2x = sinx
Real Numbers Math Calculus Precalculus

11/10/15

Solve each equation for all values of x in the real number system.

Solve each equation for all values of x in the real number system.  If an exact solution does not exist, round your answers to the nearest hundredth.   1.  sin2x=sinx   2.... more

09/23/15

Solving nonlinear equations for both real and imaginary numbers

9x^4-28x^2+3=0
Real Numbers

09/09/15

i dont get it at all!!

Find the approximate side length of each square figure to the nearest whole unit. 1.) a tabletop with an area 25ft2 2.) a wall that is 105 m2
Real Numbers

08/29/15

explain why 5 x 4 x 3 x 2 x 1 + 3 is a composite number?

explain why 5 x 4 x 3 x 2 x 1 + 3 is a composite number?  
Real Numbers Algebra 1

08/20/15

Dealing with real numbers

A ball is dropped from a height of 25.6 feet. After it hits the ground, it bounces to 12.8 feet and falls back to the ground. Next it bounces to 6.4 feet and falls back to the ground. Then it... more
Real Numbers Algebra 1

08/20/15

Subtracting or Adding Real numbers

A ball is dropped from a height of 25.6 feet. After it hits the ground, it bounces to 12.8 feet and falls back to the ground. Next it bounces to 6.4 feet and falls back to the ground. Then it... more

07/10/15

Using the definition of isometries

Suppose fRR is an isometry of the reals. Prove that f is a reflection in a point if and only if f is decreasing.     We are learning about isometries in class and I am struggling using them to... more

07/10/15

Definition of isometries

Suppose fRR is an isometry of the reals. Prove that f is a translation if and only if f is increasing.   We are learning about isometries in class and I am struggling using them to help answer... more
Real Numbers

07/09/15

How many numbers lying between 700 and 900 leave a remainder of 4 when divided by 9,15 and 18 ?

I am having a problem in solving this question of real numbers. Please help!
Real Numbers

03/30/15

You have 1/4 of a tank of gas and 10 dollars in your wallet. Gas is $2.50/gallon and your car holds 13 gallons. Explain how you would find out how many ga

You have 1/4 of a tank of gas and 10 dollars in your wallet. Gas is $2.50/gallon and your car holds 13 gallons. Explain how you would find out how many total gallons you will have in your car after... more

Is a set of complex numbers bigger than or smaller than the set of real numbers

Is a set of complex numbers bigger than or smaller than the set of real numbers?
Real Numbers

02/02/15

How do you set up and solve?

Assume that the rate of inflation for tuition for a course is 7% per year for two years. What will tuition for the course cost in two years if the tuition cost is $500 today? 
Real Numbers Algebra

01/13/15

The sum of two numbers is forty.

The sum of two numbers is forty.  Using x to represent the smaller of the two numbers, translate "the sum of twice the smaller number and five more than the larger number" into a variable... more

12/11/14

Logarithmic function, all real numbers.

Suppose f(x) is a function defined on all real numbers and that logbf(x)=3x. What is f(x) written explicitly? f(x)=b3x What is f(logbx)?  
Real Numbers Logarithmic Functions

12/08/14

Find a function defined on all real numbers

Suppose f(x) is a function defined on all real numbers and that logbf(x)=3x. What is f(x) written explicitly?
Real Numbers Product

09/28/14

Challenging math problem

The product of real numbers x, y, and z is 1. Find all possible values of (1/1+x+xy) + (1/1+y+yz) + (1/1+z+zx).   [Side note: The / symbol above indicates a fraction, not division.] 

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