Diorella's Blog Post

Sorry about my blog being all pictures.

HOMEWORK:

Green sheet 7.6 & 7.11

MANGA HIGH

The next person to do the blog will be.. Marie Domingo.

Multiplying and Dividing Powers

* All areas will always end up as a perfect square

* All volume will always be x cubic units

You can only add exponents if the base are alike.

Product Law:

When the bases are the same in a power simply add the exponents to find a new power.

Examples: 5^4 x 5^2 = 5^6

3^9 x 3^5 x 3^6 = 3^20

Quotient Law:

When bases are the same, simply subtract the denominator from the numerator to find the new power.

HOMEWORK:

1. Read pages 99-105 and do SYK
2. CYU # 1, 2 and 3
3. Practice odd or even
4. Apply and Extend (All)
5. 3.2 HWB
6. MANGA HIGH!

Diorella's Math Question #30 2.4

Question #30 2.4 : A square field has an area of 1000m². Laura wants to walk from one corner of the field to the opposite corner. If she walks at 1.5 m/s, how much time can she save by walking diagonally instead of walking along two adjacent sides? Express your answer to the nearest tenth of a second.

Step 1) Find the square root of the area or find the side length of the square

Step 2) Find the distance of the 2 adjacent sides

Step 3) Figure out how long it takes to walk the two adjacent sides

Step 4) Find out how long it takes to walk diagonally

Solution:

Subtract the time it takes to walk diagonally from the time it takes to walk the 2 sides.

42.25 - 29.85 = 12.4 seconds.

Laura saves 12.4 seconds by walking diagonally instead of walking the two adjacent sides.

Question #12 in section 2.2

I drew a picture to represent the question so I could understand it better.

Ex:

A) Write an expression using rational numbers to represent the length of the pelican's dive.

Answer: 3.8 - (-2.3)

Since it's asking the length of the pelicans dive (how far it traveled) you need to start of with it's starting point which is 3.8. Then you need to add how far it went down which was 2.3 below water (-)

B) How long is the pelicans dive?

Answer: 3.8 - (-2.3) = 6.1 meters.

1) Line up the numbers properly, one on top of the other

2) Add the numbers up

3) Place the decimal in the right place

4) Remember the sign rules (+) (-)

The pelican dived a total of 6.1 meters

If you need more help, here is a link:

http://www.mathgoodies.com/lessons/decimals/solve_word_problems.html

Here is a video:

Remember to go on Manga High