Month: February 2017

Math 10 Week #4

alexr2015

Converting metric units to other metric units.

We finished our exponents unit this week, and also started our measurement unit. We talked about metric units, and how to convert metric units to other metric units. We used a number line to help us out, along with the mnemonic “King Henry Doesn’t Usually Drink Chocolate Milk”. to memorise all the metric units.

If we want to convert 3 meters, to millimetres, we would simply start at the m on the number line, and we count how far the units are from each other. Since millimetres are 3 units from the right of meters, we move the decimal three spots to the right. 3m = 3000mm.

Math 10 Week #3

alexr2015

This week we talked about rational exponents. Most of the time, we dealt with negative exponents.

Just about every single number, whenever it contains a negative exponent, the base must be reciprocated.

3^{-3}

Notice the negative exponent? This means the base must be reciprocated. When the base is reciprocated, the negative is removed from the exponent.

\frac{1}{3^3}

Note that for a number such as {2x^-3} the two will stay as a numerator, while the $latex x^{-3

http://www.solving-math-problems.com/negative-exponents.html

}&s=2$ will be “dragged down” into the world of denominators.

\frac{2}{x^3}

Math 10 Week #2

alexr2015

My class learned many things this week. One thing that we learned about was entire radicals and mixed radicals, how to convert one to the other, and vice versa.

 

 

An entire radical is just a square root with no coefficient: \sqrt{75}

A mixed radical is a square root with a coefficient: 5\sqrt{3}

To convert a mixed radical to an entire radical, you need to insert the coefficient into the square root. This is done by simply squaring the coefficient (Multiplying it by itself) and then multiplying it by whatever is inside the square root.

Take the square root 2\sqrt{3} for example. First, we square the coefficient, 2, so it becomes 2^2.

2^2 = 4. This then goes inside the square root and multiply the two numbers together to make \sqrt{12}.

 

 

Staying Safe at Work

alexr2015

Three things I will do to stay safe at work are:

  1. Make sure I know of all the dangers in the workplace.
  2. Refuse any dangerous work or tasks that I am not trained to do.
  3. Be aware of my surroundings.

 

One thing I will do to keep others safe at work is:

  1. Look out for other people’s safety.

Float Your Boat!

alexr2015
  1. We tried to discover what design would hold the most pennies.
  2. If we had more air pockets at the bottom of the boat, then they boat would have more buoyancy, letting us hold more pennies because more air pockets translates to more buoyancy.
  3. Our boat held 57 pennies.
  4. We created an air pocket at the bottom of the boat in an attempt to give the boat more buoyancy.
  5. I would ditch the straws and popsicle sticks at the bottom of the boat.

Math 10 Week #1

alexr2015

This week in Math class, I leaned about different ways to factor. One of these ways was creating factor trees. Here is one below.

https://www.mathsisfun.com/definitions/factor-tree.html

In factor trees, you take a number that you want to find the factors for. Find some factors of that number, than find the factors of the next numbers, until you can’t factor anymore. The numbers that you have left at the bottom are the prime factors of the number at the top.