Welcome to H3 Maths

Blog Support for Growing Mathematicians

Archive for June, 2021

Failure at Math blamed for Crime Spree

June30

A woman blames her poor math skills for a crime spree? Yes, it’s true! “A contestant of The Bachelor New Zealand has been sentenced after she admitted stealing more than $12,000 from her employer and a social organisation. The woman, aged 31, appeared today at Invercargill District Court after pleading guilty to five counts of theft […]

by posted under Uncategorized | tagged under , , , , ,  |  Comments Off on Failure at Math blamed for Crime Spree

Something to think about…

June26

Einstein’s brain weighed 2.7 lb, while the average male brain weighs 3 lb.

by posted under Uncategorized | tagged under ,  |  Comments Off on Something to think about…

Find the sum of these angles in a 5-pointed star

June26

This question was given to some 13 year old students in India. They had to provide proof with their answer: Answer will be posted in Post Support soon

by posted under Uncategorized | tagged under ,  |  Comments Off on Find the sum of these angles in a 5-pointed star

Is a newspaper and coffee the secret to solving difficult problems?

June23
by posted under Uncategorized | tagged under , , , , , , ,  |  Comments Off on Is a newspaper and coffee the secret to solving difficult problems?

Trick for Finding Percentages

June23
by posted under Uncategorized | tagged under , ,  |  Comments Off on Trick for Finding Percentages

Data Explosion, but where is it all Stored?

June22

Some 500 hours’worth of video is uploaded every minute to Google-owned video sharing platform YouTube. Every year, tweets, social media posts, online banking and the rest produce an aggregate number of digital bits equivalent to ten with 21 zeros after it. The digital footprint is so large that it is difficult to comprehend. Melvin Vopson of […]

by posted under Uncategorized | tagged under , , , ,  |  Comments Off on Data Explosion, but where is it all Stored?

Around the World in 80min+

June16

The International Space Station (ISS) moves fast—very fast! The modular space station has an orbital speed of 7.66 kilometers per second, which is roughly 17,100 mph. It takes the ISS a mere 92.68 minutes to orbit Earth, meaning it goes around Earth nearly 16 times per day. (This image was taken in 2000 and shows […]

by posted under Uncategorized | tagged under , , , ,  |  Comments Off on Around the World in 80min+

Code Warrior Sells His Suit of Armour

June16

Tim Berners-Lee, creator of the World Wide Web, is auctioning off his invention’s source code as an NFT. Although the groundbreaking code has long been in the public domain, the British computer scientist has now authorized the sale of a single edition of his original time-stamped files. Comprising over 9.500 lines of code, the files contain the […]

by posted under Uncategorized | tagged under , , , , , , , ,  |  Comments Off on Code Warrior Sells His Suit of Armour

Another Algebra Puzzle

June16

These Algebra Puzzles seem to crop up from time to time. However, if you are following the rules of operations (see BEMA post), the logic rules and the answer is easy. A reminder: B E M A means we solve in this order—Brackets first, then Exponents (or powers. There are none in this question); Multiplication/Division; […]

by posted under Uncategorized | tagged under , , ,  |  Comments Off on Another Algebra Puzzle

Explaining Area, Pi, etc. with real Pizza!

June11
by posted under Uncategorized | tagged under , , , ,  |  Comments Off on Explaining Area, Pi, etc. with real Pizza!
« Older Entries

Post Support

Largest number between o and 1 million which does not contain the ‘n’ is 88

 

Rotation SAT Problem: Answer: 4 (see: https://www.youtube.com/watch?v=FUHkTs-Ipfg)

 

Which number has its letters in alphabetical order? Answer: F O R T Y

Hidden Rabbit? Clue: check the trees

How long for the stadium to fill? 45 minutes.

Where are you? the North Pole

Prize Object Puzzle: If Sue does not know where the prize is in the first question, it can’t be under the square. She must have been told it is under another shape. Apply this same logic to Colin. It is then obvious that the prize cannot be under a yellow object. That helps Sue eliminate her yellow shapes. Got the idea?

Algebra Puzzle: Answer = 1

Popular Math Problems Answers: 1, 1

Number of tabs? According to Lifehacker, the ideal number of tabs you should have open is nine. Yes, a single digit. To some, this is like playing a piano and only using a fraction of the notes!

Worst Graph? Where to start. What a visual mess and even some of the lines merge and are impossible to follow. A graph is a visual display of data, with the goal to identify trends or patterns. This is a spider’s web of information which fails to show a clear pattern at all. Solution? Well, different colors would help, or why not group in two or three graphs where trends are similar?

Number of different nets to make a cube is eleven – see this link

Homework Puzzle; The total value of the counters is 486, so halve this to get 243. Now, arrange the counters to equal this amount twice.

The graph on the left (Coronavirus) is for a time period of 30 days, while the one on the right (SARS) is for 8 months! Very poor graphical comparison and hardly relevant, unless it is attempting to downplay the seriousness of the coronavirus?

10 x 9 x 8 + (7 + 6) x 5 x 4 x (3 + 2) x 1 = 2020

NCEA Level 2 Algebra Problem. Using the information given, the shaded area = 9, that is:
y(y-8) = 9 –> y.y – 8y – 9 =0
–> (y-9)(y+1) = 0, therefore y = 9 (can’t have a distance of – 1 for the other solution for y)
Using the top and bottom of the rectangle,
x = (y-8)(y+2) = (9-8)(9+2) = 11
but, the left side = (x-4) = 11-4 = 7, but rhs = y+? = 9+?, which is greater than the value of the opp. side??
[I think that the left had side was a mistake and should have read (x+4)?]

Archives

H3 Viewers



Skip to toolbar