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if you want answers this is not the site

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if you want answers this is not the site

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Write 649

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See all the wonderful things juan's abs has made

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See all the wonderful things ashleyto has made

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Professional uni cyclist with a love for maths, HERE TO HELP! 
new phone who dis?

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See all the wonderful things jimmy_s_davies has made

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Professional uni cyclist with a love for maths, HERE TO HELP! 
new phone who dis?

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Try this; it may be easy, it may not

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BRILLIANT INDIAN STUDENT - Courtesy - Master Mind Abacus

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BRILLIANT INDIAN STUDENT - MASTER MIND ABACUS.

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A bag contains 1 Green ball, 2 Blue balls, and 1 White ball. What is the probability of picking 1 Green ball and 1 White ball (in either order)?

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https://padlet.com/MsBonilla/delta2unit38bv

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A compass is primarily divided into the four cardinal points—north, south, east, and west. These are often further subdivided by the addition of the four inter cardinal (or ordinal) directions—northeast (NE) between north and east,southeast (SE), southwest (SW), and northwest (NW)—to indicate the eight principal winds.

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Fractions on both sides

If an equation has fractions on both sides, multiply both sides by the Lowest Common Multiple of the denominators.

Example

Solve this equation
(x - 3)/₂ = (x - 2)/3

Solution

One side is divided by 2. The other side is divided by 3. The Lowest Common Multiple of 2 and 3 is 6, so multiply both sides by 6.

(x - 3)/₂ × 6 = (x - 2)/₃ × 6
3(x - 3) = 2(x - 2)
Expand the brackets
3x - 9 = 2x - 4
Take 2x from both sides
x - 9 = - 4
Add 9 to both sides
x = 5

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For example look at the equation
x/₂ = 3
If we multiply both sides by 2 we get the answer:
x = 6

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Expand this bracket: 2(3a + 5)
Multiply everything inside the bracket by the number outside to give:
2 × 3a + 2 × 5
Simplify this to
6a + 10

Example

Expand -3(2b - 4).
Multiply everything inside the bracket by the number outside to give
-3 × 2b + -3 × -4
Simplify this to
-6b + 12

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http://www.bbc.co.uk/education/guides/zk9dmp3/test

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Solve the equation 5x - 2 = 12 - 2x

Your aim is to get all the unknown x terms on one of the equation side only, so start by adding 2x to both sides: 7x - 2 = 12
Next add 2 to both sides: 7x = 14
And finally, divide by 7 to give x = 2

As always, you can check your answer in the original equation. So substitute x = 2 back into 5x - 2 = 12 - 2x

(5 × 2) - 2 = 12 - (2 × 2)
10 - 2 = 12 - 4
8 = 8
This makes sense, so the value x = 2 is correct.

Example 2

Solve the equation 4x = 10 - x

Add x to both sides to give 5x = 10.
To find x, divide both sides by 5 to get x = 2

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You already know how to solve equations with the unknown (x) on one side of the equation.

For example, the equation x + 3 = 5 is represented by the following diagram:

By subtracting 3 sweets from both sides you will find the solution to the equation:

You can now see that one bag is equivalent to two sweets. Written algebraically, this is:

x + 3 = 5
Subtract 3 from both sides, to give:
x = 2

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Probability for Beginners : Solving Math Problems

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Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch More: http://www.youtube.com/ehoweducation You don't have to be a mathematics expert to start grasping the concepts at hand with probability. Learn about probability for beginners with help from a high school math tutor in this free video clip.

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Solve the equation 2x + 2 = x + 4

The equation 2x + 2 = x + 4 is represented by the following diagram:

As usual, the bags represent the unknown (x) and the sweets represent the numbers. Aim to get unknowns on just one side of the equation, so begin by subtracting x from each side:

Now you have the type of equation that you recognise, all you need to do is subtract 2 from both sides.

Written algebraically, this becomes:

2x + 2 = x + 4
Subtract x from both sides to give x + 2 = 4
Subtract 2 from both sides to give x = 2

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http://www.bbc.co.uk/education/guides/zk9dmp3/activity

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https://www.youtube.com/watch?v=N0_TWQTrJ-k

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Expanding and factorising

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Algebra : expanding brackets and factorising expressions

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This might help

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Expanding and factorising algebraic expressions

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In this video I have gone over the two basic skills in algebra - which is to expand and simplifying algebraic expressions and also how to factorise different algebraic expressions Website : http://www.mmtutorial.com/

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http://www.bbc.co.uk/education/topics/zgf3cdm

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Bearings from Bilal

Bearings. A bearing is an angle, measured clockwise from the north direction. Below, the bearing of B from A is 025 degrees (note 3 figures are always given). The bearing of A from B is 205 degrees.

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http://www.bbc.co.uk/bitesize/ks3/maths/algebra/formulae1/activity/

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"Mutually exclusive" is a statistical term describing two or more events that cannot occur simultaneously. For example, it is impossible to roll a five and a three on a single die at the same time.

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http://www.math-play.com/Algebraic-Expressions-Millionaire/algebraic-expressions-game.html

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http://www.s-cool.co.uk/gcse/maths/graphs/revise-it/real-life-graphs

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http://www.bbc.co.uk/education/guides/zc8hvcw/revision

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scroll down on the page to find questions

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scroll down on the page to find questions

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http://www.bbc.co.uk/bitesize/standard/maths_i/relationships/manipulation/revision/1/

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Welcome year 8s
Please post all useful information you can find on unit 2 to share with your peers. Keep it useful, keep it positive, keep it clean!