https://padlet.com/sarahcl7221/pa Everything about Unit 2 all in one simple Padlet! en-us 2016-05-16 15:43:25 UTC 2016-05-22 19:14:53 UTC hello@padlet.com http://parade.com/wp-content/uploads/2013/05/maths-ftr.jpg sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111111171 Real numbers are numbers on the number line that have a measurable value and can be manipulated.  They include rational and irrational numbers. ]]> 2016-05-16 19:52:38 UTC https://padlet.com/sarahcl7221/pa/wish/111111171 gatorkelsie https://padlet.com/sarahcl7221/pa/wish/111111683 All numbers that are not rational are considered irrational. An irrational number can be written as a decimal, but not as a fraction. An irrational number has endless non-repeating digits to the right of the decimal point. A rational number can be written as a fraction, in which both the numerator and the denominator are whole numbers.]]> 2016-05-16 19:56:37 UTC https://padlet.com/sarahcl7221/pa/wish/111111683 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111112109 Perfect Squares are when you get a whole number after square rooting it.
The same square root multiplied by itself make the square.
Ex. √2 x √2 = 2]]> 2016-05-16 19:59:41 UTC https://padlet.com/sarahcl7221/pa/wish/111112109 https://padlet.com/sarahcl7221/pa/wish/111307757 Integers are counting numbers and their opposites. Whole numbers are all counting numbers and zero. Natural numbers are only 
counting numbers so zero is not included.  They are all rational numbers and real numbers.]]> 2016-05-17 18:04:25 UTC https://padlet.com/sarahcl7221/pa/wish/111307757 https://padlet.com/sarahcl7221/pa/wish/111327200 The Pythagorean Theorem is: a theorem in geometry: the square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides, otherwise known as a^2+b^2=c^2.  Pythagorean Theorem Converse is the square of one side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle. ]]> 2016-05-17 19:36:17 UTC https://padlet.com/sarahcl7221/pa/wish/111327200 https://padlet.com/sarahcl7221/pa/wish/111327901 To add and subtract radicals, you can first simplify the radicals into non-radical numbers.  For example, 
√16+√4+√49=4+2+7 = 13.
√225-√144+√64-√25 = 15-12+8-5 = 6
Fractions can also be simplified similarly by simplifying their numerator and denominator.
√8/50 =√4/25 =2/5
Therefore, √36+√27/48-√.25+√16 = 6+3/4-1/2+4 = 10.25]]> 2016-05-17 19:40:32 UTC https://padlet.com/sarahcl7221/pa/wish/111327901 https://padlet.com/sarahcl7221/pa/wish/111328177 When a and b are greater than or equal to 0, √ab = √axb = √a√b
Multiplying Radicals is just like multiplying regular numbers, for example, √3 x √5 = √15, and √100 x √2 = √200. Similarly, if you multiply a regular number, for example, 3, by a square root, all you have to do is this: 3 x √69420= 3√69420, simple!]]> 2016-05-17 19:42:10 UTC https://padlet.com/sarahcl7221/pa/wish/111328177 lionbearecw https://padlet.com/sarahcl7221/pa/wish/111329860 Cylinder:

Cone:

Sphere:

]]> 2016-05-17 19:52:45 UTC https://padlet.com/sarahcl7221/pa/wish/111329860 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111375194 Division Property of Square Roots: √a/b = √a/√b ; √a/√b = √a/b
A radical expression in its simplest form has no perfect squares except for 1 in the radicand, no square roots in the denominator, and no fractions in the radicand
Examples: √9/√25 = 3/5
√15/√12 = √15/12 = √5/4 = √5/ 2.
Don't do #15-22
http://cdn.kutasoftware.com/Worksheets/Alg1/Dividing%20Radical%20Expressions.pdf]]> 2016-05-18 03:18:42 UTC https://padlet.com/sarahcl7221/pa/wish/111375194 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111375211 Estimating Radicals is solving not perfect roots, for example, √3 would become 1.7. How you ask? This is because 1.7 squared is approximately 2.89 which is close to 3, you can find this by pretending that √3 is actually 300, and finding the  closest square to it, in this case, 17. For example, what would √2 be? We would first expand √2 into 200, next, find the closest square to 200, in this case, 14 (196). Finally, all you have to do is say is √2 = 1.96. For more information go to this link: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/radical-radicals/v/approximating-square-roots
Practice: https://www.khanacademy.org/math/pre-algebra/exponents-radicals/radical-radicals/e/square_roots_2

]]> 2016-05-18 03:18:58 UTC https://padlet.com/sarahcl7221/pa/wish/111375211 lionbearecw https://padlet.com/sarahcl7221/pa/wish/111539217 The cylinder volume formula is very useful in real life. Many companies use the formula to make their products better and many normal people use it to. For example, someone may be trying to figure out how much water their water bottle can hold. If they lose the label of the water bottle, they can just use the cylinder volume formula, as long a their water bottle is a cylinder. If that person measures their water bottle, and get the measurements of height=5 in., and radius=2 in., if they use the cylinder formula, and 3.14 as pi, that person will figure out that the water bottle's volume is 62.8 inches cubed.
Below is a video showing how to use the cylinder volume formula in real life:
https://learnzillion.com/lesson_plans/7682-solve-real-world-problems-by-finding-volume-of-cylinders
Below are mathematical questions and real-life problems:
http://www.studyzone.org/mtestprep/math8/g/volcylprac.cfm]]> 2016-05-18 19:31:24 UTC https://padlet.com/sarahcl7221/pa/wish/111539217 lionbearecw https://padlet.com/sarahcl7221/pa/wish/111541159 The cone volume formula is used in real life. An example is: A toy company is selling a cone shaped toy online. The company needs to put the volume of the toy in the information about the toy, to give people who want to buy the toy an idea of how much space it'll take up. If the radius of the base of the cone is 4 in., and the height of the toy is 9 in., then what is the volume of the toy, if you use 3.14 as pi? If the company uses the cone volume formula, they will put 452.16 as the volume online.
Below is a video showing how to use the cone formula in real life situations:
https://learnzillion.com/lesson_plans/7248-solve-real-world-problems-by-finding-volume-of-cones
Below are mathematical problems using the cone volume formula:
http://www.mathworksheets4kids.com/volume/cone-easy1.pdf
Below are questions that review the cylinder, cone, and sphere volumes with real-life problems:
https://www.khanacademy.org/math/basic-geo/basic-geo-volume-surface-area/basic-geo-volumes/e/volume-word-problems-with-cones--cylinders--and-spheres

]]> 2016-05-18 19:43:49 UTC https://padlet.com/sarahcl7221/pa/wish/111541159 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111541196 Don't do #22-26
http://cdn.kutasoftware.com/Worksheets/Alg2/Adding%20Subtracting%20Multiplying%20Radicals.pdf]]> 2016-05-18 19:44:06 UTC https://padlet.com/sarahcl7221/pa/wish/111541196 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111541876 3,4,5
6,8,10
20,21,29
10,24,26
5,12,13
8,15,17
21,28,35
7,24,25

]]> 2016-05-18 19:48:14 UTC https://padlet.com/sarahcl7221/pa/wish/111541876 christopherisyourmaster https://padlet.com/sarahcl7221/pa/wish/111541889 https://www.brightstorm.com/math/geometry/pythagorean-theorem/pythagorean-theorem-proofs/]]> 2016-05-18 19:48:17 UTC https://padlet.com/sarahcl7221/pa/wish/111541889 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111542116 30-60-90 Ratio = 1: √3 : 2
45-45-90 Ratio = 1: 1: √2]]> 2016-05-18 19:49:48 UTC https://padlet.com/sarahcl7221/pa/wish/111542116 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111542707 https://www.khanacademy.org/math/basic-geo/basic-geo-pythagorean-topic/basic-geo-special-right-triangle/e/pythagorean_theorem_2]]> 2016-05-18 19:53:35 UTC https://padlet.com/sarahcl7221/pa/wish/111542707 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111543266 https://www.khanacademy.org/math/basic-geo/basic-geo-pythagorean-topic/basic-geo-pythagorean-theorem/e/pythagorean-theorem-word-problems]]> 2016-05-18 19:57:21 UTC https://padlet.com/sarahcl7221/pa/wish/111543266 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111584826 (x1+ x2) / 2, (y1 + y2) / 2]]> 2016-05-19 03:27:53 UTC https://padlet.com/sarahcl7221/pa/wish/111584826 lionbearecw https://padlet.com/sarahcl7221/pa/wish/111746475 The sphere volume is used in real life too. For example: The Lions and the Snakes are in a debate over whether the Snakes cheated or not. The Lions think that the Snakes pitched a smaller baseball than normal when it was the Lion's turn to bat to make it harder for the Lion players to get a good hit. The Lions measured the baseball's dimensions and got 60 cm. for the diameter. The Lions know that the volume of a normal baseball should be between 204000 cm and 230000 cm cubed. If the Lions follow the sphere formula, then they will figure out that the Snakes were cheating.
Below is a link showing how to use the sphere volume formula in real-life:
https://learnzillion.com/lesson_plans/8753-solve-real-world-problems-by-finding-volume-of-spheres
Below is a link to mathematical questions using the sphere volume formula:
http://www.mathexpression.com/sphere-practice.html
Below is a link to real-life questions using the sphere volume formula:
https://www.khanacademy.org/math/basic-geo/basic-geo-volume-surface-area/basic-geo-volumes/e/volume-word-problems-with-cones--cylinders--and-spheres]]> 2016-05-19 19:36:17 UTC https://padlet.com/sarahcl7221/pa/wish/111746475 christopherisyourmaster https://padlet.com/sarahcl7221/pa/wish/111747562 IXL: Algebra 1 F.14, F.15, F.16, F.17
Geometry: Q.1, Q.2, Q.4]]> 2016-05-19 19:43:45 UTC https://padlet.com/sarahcl7221/pa/wish/111747562 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111747828 Answers on bottom
3x^3 = 648

3(x^3 - 2/3) =1

-7x^2 + 10(x^2 - 6) = 6(x^2 +4)

√(4 + x) = 5√(x-20)

[2√(2x+1)] / 3 = 6 

-n^2 + 33n^2 = -3(1-3n^2) + 44(n^2 - 30)

√(3m-79) = √(28m + 86)

If -5 is a root to a  number, 3x-2, find the value(s) of √(2x + 2) / √ (9x-1)

If the square roots of 3x+1 are 7 and -7, find the value(s) of -√(7x+9)



Answers: 
x = 6
x = 1
No Solution
x = 21
x = 40
n= 3√7
No Solution
x = 9, 1/2
x = 16, -11]]> 2016-05-19 19:46:09 UTC https://padlet.com/sarahcl7221/pa/wish/111747828 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111788785 Algebra 1: A.1 MUST ACHIEVE 100% ]]> 2016-05-20 02:59:19 UTC https://padlet.com/sarahcl7221/pa/wish/111788785 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111789070 Algebra 1: F.4
Geometry: T. 1-6, T.9]]> 2016-05-20 03:04:09 UTC https://padlet.com/sarahcl7221/pa/wish/111789070 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111789234 IXL Algebra 1: EE.1, EE.2, EE.3, EE.4, EE.6, EE.7
Algebra 2: L.5, L.6, L.7, L.8, L.9
Must get 100 on all!

]]> 2016-05-20 03:06:04 UTC https://padlet.com/sarahcl7221/pa/wish/111789234 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111789376 Algebra 1: G.2, G.3
Geometry: B.7, B.8]]> 2016-05-20 03:07:48 UTC https://padlet.com/sarahcl7221/pa/wish/111789376 sarahcl7221 https://padlet.com/sarahcl7221/pa/wish/111923186 Give the coordinates in Quadrant II that is √5 units from (1,3).

(-1,2) or (-1,4)

Give the coordinates in Quadrant I that is 4√2 units apart from (1,1)

(5,5)

Find the coordinates on the x-axis that is 2√5 units apart from (-10,-2).

(-14,0) or (-6,0)]]> 2016-05-20 19:32:17 UTC https://padlet.com/sarahcl7221/pa/wish/111923186 lionbearecw https://padlet.com/sarahcl7221/pa/wish/111923772 This is the distance formula:

It is used to find the distance between to points, specifically on a coordinate plane.]]> 2016-05-20 19:37:58 UTC https://padlet.com/sarahcl7221/pa/wish/111923772