Welcome to H3 Maths

Blog Support for Growing Mathematicians

Archive for February, 2020

Famed NASA mathematician, dies at 101

February25

What an amazing woman who helped shape the world! View a tribute here.

by posted under Uncategorized | tagged under , ,  |  Comments Off on Famed NASA mathematician, dies at 101

A Mathematical Bridge?

February23

Queens’ College was founded 1448 by Margaret of Anjou, wife of King Henry VI. The first bridge on this spot was built in the 16th century, and gave direct access from President’s Lodge (built c.1460) on the east side of the Cam to the fields west of the river. The timber bridge was rebuilt in […]

by posted under Uncategorized | tagged under , , , , , , , , ,  |  Comments Off on A Mathematical Bridge?

19000, but who is counting?

February23

Thanks for supporting H3 Maths through your interest and promotion of this site – one dedicated to engaging students with Mathematics in the real world (with a few light-hearted moments on the side). Total views are well over 34,000 which is something we never expected when we started the site nearly 10 years ago. Thank […]

by posted under Uncategorized | tagged under , , ,  |  Comments Off on 19000, but who is counting?

Capturing a Single Atom!

February22

“Research on being able to build on a smaller and smaller scale has powered much of the technological development over the past decades. For example, it is the sole reason that today’s cellphones have more computing power than the supercomputers of the 1980s.” This comment by Associate Professor Mikkel Andersen of Otago’s Department of Physics was […]

by posted under Uncategorized | tagged under , , , , , ,  |  Comments Off on Capturing a Single Atom!

Nutella on bread leads to Math Solution

February16

“I remember one morning I was making myself a slice of bread with Nutella, when suddenly, I said out loud: Mothers! It is there!,” González-Acuña tells PetaPixel. What problem did he solve? González-Acuña solved the 2000 year old problem of aberration in optical lenses! By using an extremely complex mathematical formula, published in an article […]

by posted under Uncategorized | tagged under , , , , , , , , , , , ,  |  Comments Off on Nutella on bread leads to Math Solution

The Math of Image Compression – PNG vs JPG

February13

JPEG Short for Joint Photographic Experts Group — the team that developed the format — JPEG has become the standard compressed format in digital photography and online image sharing due to its careful balance of file size and image quality. The exact ratio differs depending on the program and settings used, but the typical JPEG image […]

by posted under Uncategorized | tagged under , , , , , , ,  |  Comments Off on The Math of Image Compression – PNG vs JPG

Trojan Horse Tactics by Crypto-mathematicians

February12

In a modern version of the famous Greek Trojan Horse, The CIA secretly bought a company that sold encryption devices across the world. Then its spies sat back and listened! The company, Crypto AG, got its first break with a contract to build code-making machines for U.S. troops during World War II. Flush with cash, it […]

by posted under Uncategorized | tagged under , , , , ,  |  Comments Off on Trojan Horse Tactics by Crypto-mathematicians

The Math of Social Media

February12

What are some of the math metrics used for analyzing social media? Here is a small section of visitors to H3 recently: Other online metrics include; 1. Cost per impression (CPM) COST / 1000 IMPRESSIONS An impression is how many times an advertisement is displayed on a web page or search engine. It does not […]

by posted under Uncategorized | tagged under ,  |  Comments Off on The Math of Social Media

The Math of Maps and Mapping

February11

British researchers have published a new map predicting the global spread of the novel coronavirus over the next three months. The graphic is based on the mobile phone and flight data of 60,000 of an estimated five million Wuhan residents who fled during the critical two weeks before the outbreak city was placed under lockdown. […]

by posted under Uncategorized | tagged under , , , , , , , , ,  |  Comments Off on The Math of Maps and Mapping

Best Math Career Quiz?

February9

H3 have come across a variety of Math Career quizzes. We think the following one is a very useful tool because it focusses on your likes and steers you towards a career that you will enjoy! Now, that’s pretty cool. Click on the image below and take the quiz to find a suitable career path;

by posted under Uncategorized | tagged under , , , , , ,  |  Comments Off on Best Math Career Quiz?
« 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