14 Answered Questions for the topic Mathematical Thinking

Mathematical Thinking Mathematical Operations

06/11/18

#### What are the mathematical operations to make this statement true?

2_____3_____20_____4=24

01/12/18

#### Can someone help me prove the below by induction please? Thanks :)

Prove by induction:nΣ(q^i) = (q^(n+1)-1)/(q-1)i=0
Mathematical Thinking Sets Density

12/10/17

#### Can you help me find a counterexample to the following;

For a subset x⊆R: 'X is dense in R implies that x∩Q≠Ø
Mathematical Thinking Mathematical Induction Power Set

12/10/17

#### Help with proof by induction please - see below!

The power set of a finite set A, denoted P(A), is defined to be the set of all subsetsof A. For instance, if A = {1, 2}, then P(A) = {∅, {1}, {2}, {1, 2}}. Note that P(A) isa set which contains... more

12/08/17

#### Help me with proof by contradiction pls

I need to prove the fact that 2^(1/2)+3^(1/3) is irrational. Can someone help with this pls
Mathematical Thinking Mathematical Induction

12/06/17

#### Struggling with proof by induction. Can someone help me please with the below?

A sequence an is defined recursively as an+2 = −3an+1 − 2an, a0 = 1, a1 = −2.Conjecture a formula for an and prove it by induction.
Mathematical Thinking Numbers Algebraic

11/20/17

#### Given that a number x is algebraic, how would I prove that x^2 is also algebraic?

Need to know how to prove this, any chance anyone knows?
Mathematical Thinking Prime Numbers Factorial

11/17/17

#### If n!+1 is prime, is n prime?

Just wondering if this is true or false!
Mathematical Thinking

05/15/17

#### what is half of 3/32

I have a peces of medal that is 3/32 thick. what is half of the thickness?
Mathematical Thinking

03/12/17

#### which is the better value: a 15.3 ounce box of cereal for $3.37 or a 20 ounce box of cereal for$ 4.59

The supermarket displays the unit price for the 15.3 ounce in terms of cost per ounce, but display the unit price for the 24 ounce box in terms of cost per pound. what is the unit price to the... more

05/24/16

#### How do I create a function and graph on a coordinate plane? I'm hopeless.

A water ballon is catapulted into the air so that its height h, in meters, after t seconds. Using the acceleration due to gravity, the initial velocity of 27 meters, and an initial height of 2.4... more
Mathematical Thinking Mathematics

09/09/15

#### find four different digits that give four two-digit numbers which add to a total of 100

find four different digits that give four two-digit numbers which add to a total of 100

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