Smart Board Tester
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Smart Board Tester as PDF for free.
More details
- Words: 512
- Pages: 14
November 16, 2009
November 16, 2009
Warm Up 1.
2. Represent the number line below in interval notation and set builder notation.
-4
-2
0
2
4
3. If 9 packs of mac'n cheese cost $3.69, how many would 15 cost?
4. What is the ratio of a triangle's area to it's base?
November 16, 2009
MATH 9R Assignment Sheet #2 Assignment #30
p. 196 49. 9.5 x 1012 50. 1.2 x 1022 51. 5.0 x 10 -13 52. 8.0 x 10 -4
p. 201
November 16, 2009
SECOND QUARTER BEGINS!
HOMEWORK DUE: Assignment #30 TONIGHT'S HOMEWORK: Assignment #31
QUIZ : Thursday
TEST: Next Friday
November 16, 2009
Divide:
Divide: 6s2 + 5s - 6, by 2s + 3
November 16, 2009
Rate, Ratio & Proportion Quick Review
1. If the instructions for cooking a turkey state “Roast turkey at 325° for 20 minutes per pound,” how many hours will it take to roast a 20-pound turkey at 325°?
2. Sterling silver is made of an alloy of silver and copper in the ratio of 37:3. If the mass of a sterling silver ingot is 600 grams, how much silver does it contain? (1) 48.65 g (3) 450 g (2) 200 g (4) 555 g
3. A rocket car on the Bonneville Salt Flats is traveling at a rate of 640 miles per hour. How much time would it take for the car to travel 384 miles at this rate? (1) 36 minutes (3) 256 minutes (2) 245 minutes (4) 1.7 hours
4. You are making a cookie recipe that calls for 2 cups of flour and 4 eggs. You have 6.5 cups of flour, and you want to use it all up. How many eggs will you use?
November 16, 2009
If the side of a square is given find the perimeter. Side 1
Perimeter
2 3
Note: as the side changes, the perimeter also changes
This is an example of a DIRECT VARIATION. Two variables vary directly if their ratio is constant.
November 16, 2009
DIRECT VARIATION
November 16, 2009
DIRECT VARIATION
November 16, 2009
There are 3 forms of a direct variation questions: 1. Table (similar to x, y chart) a) check to see if each ratio reduces to the same number. b) constant of variation (cv) is the same number. c) write a formula 2. Graph 3. Word Problem Questions
November 16, 2009
Examples:
TABLES
November 16, 2009
Find m and n if it is a direct variation
November 16, 2009
2. Graph: a) must be a straight line b) must go through the origin c) must be a positive slope Example: state which are direct variations
November 16, 2009
3. Word Problem Questions a) A varies directly as h. A = 48 when h = 4. Find h when A = 36.
b) If x varies directly as y such that x is 12 and y is 3, find x when y = 4
c) There are about 60 calories in 30 grams of canned salmon. About how many calories are there in 210 grams of salmon?
November 16, 2009
Warm Up 1.
2. Represent the number line below in interval notation and set builder notation.
-4
-2
0
2
4
3. If 9 packs of mac'n cheese cost $3.69, how many would 15 cost?
4. What is the ratio of a triangle's area to it's base?
November 16, 2009
MATH 9R Assignment Sheet #2 Assignment #30
p. 196 49. 9.5 x 1012 50. 1.2 x 1022 51. 5.0 x 10 -13 52. 8.0 x 10 -4
p. 201
November 16, 2009
SECOND QUARTER BEGINS!
HOMEWORK DUE: Assignment #30 TONIGHT'S HOMEWORK: Assignment #31
QUIZ : Thursday
TEST: Next Friday
November 16, 2009
Divide:
Divide: 6s2 + 5s - 6, by 2s + 3
November 16, 2009
Rate, Ratio & Proportion Quick Review
1. If the instructions for cooking a turkey state “Roast turkey at 325° for 20 minutes per pound,” how many hours will it take to roast a 20-pound turkey at 325°?
2. Sterling silver is made of an alloy of silver and copper in the ratio of 37:3. If the mass of a sterling silver ingot is 600 grams, how much silver does it contain? (1) 48.65 g (3) 450 g (2) 200 g (4) 555 g
3. A rocket car on the Bonneville Salt Flats is traveling at a rate of 640 miles per hour. How much time would it take for the car to travel 384 miles at this rate? (1) 36 minutes (3) 256 minutes (2) 245 minutes (4) 1.7 hours
4. You are making a cookie recipe that calls for 2 cups of flour and 4 eggs. You have 6.5 cups of flour, and you want to use it all up. How many eggs will you use?
November 16, 2009
If the side of a square is given find the perimeter. Side 1
Perimeter
2 3
Note: as the side changes, the perimeter also changes
This is an example of a DIRECT VARIATION. Two variables vary directly if their ratio is constant.
November 16, 2009
DIRECT VARIATION
November 16, 2009
DIRECT VARIATION
November 16, 2009
There are 3 forms of a direct variation questions: 1. Table (similar to x, y chart) a) check to see if each ratio reduces to the same number. b) constant of variation (cv) is the same number. c) write a formula 2. Graph 3. Word Problem Questions
November 16, 2009
Examples:
TABLES
November 16, 2009
Find m and n if it is a direct variation
November 16, 2009
2. Graph: a) must be a straight line b) must go through the origin c) must be a positive slope Example: state which are direct variations
November 16, 2009
3. Word Problem Questions a) A varies directly as h. A = 48 when h = 4. Find h when A = 36.
b) If x varies directly as y such that x is 12 and y is 3, find x when y = 4
c) There are about 60 calories in 30 grams of canned salmon. About how many calories are there in 210 grams of salmon?
Related Documents
Smart Board Tester
June 2020 4
Smart Board
November 2019 24
Smart Board
November 2019 21
Math Smart Board
November 2019 17
Silk Road Smart Board
June 2020 11