
Saturday, December 19, 2009
Friday, December 18, 2009
Jim's square scribe
Jim's Square and square roots questions
Determine the prime factorization of 4
answer: 4=2x2
is 4 a perfect square?
answer: yes because the prime factor, 2 appears an even number
a rectangle has an area of 64 m2, determine the prime factorization of 64
answer: 64:2x2x2x2x2x2
is 64 a perfect square
answer: yes because the prime factor 2 appears an even number
Write the prime factorization of each number, Identify the perfect square
42:2x3x7 this is not a perfect square
169:13x13 this is a perfect square
256:2x2x2x5 this is a perfect square
Determine the prime factorization of 4
answer: 4=2x2
is 4 a perfect square?
answer: yes because the prime factor, 2 appears an even number
a rectangle has an area of 64 m2, determine the prime factorization of 64
answer: 64:2x2x2x2x2x2
is 64 a perfect square
answer: yes because the prime factor 2 appears an even number
Write the prime factorization of each number, Identify the perfect square
42:2x3x7 this is not a perfect square
169:13x13 this is a perfect square
256:2x2x2x5 this is a perfect square
Norbert's Alien story
i was walking on the street then an alien approached me and said " i will be taking over your planet and the only way to stop me is to answer these questions".
13.two quarters have the same value as ten nickles. what is the value of five quarters in nickles?
25 nickles. 2q=10n. 4q=20n. 5q=25n.
20. a breakfast cereal contains corn, wheat, and rice in the ratio of 3 to 4 to 2. if a box of cereal contains 225g of corn, how much rice does it contain?
150 grams of rice. 225/3= 75. 75 x2= 150.
10.set up a proportion a) if 10 beans have a mass of 17g,then 30 beans have a mass of 51g.
10beans/ 17g= 30beans/51g
"nooooo you have defeated me"
13.two quarters have the same value as ten nickles. what is the value of five quarters in nickles?
25 nickles. 2q=10n. 4q=20n. 5q=25n.
20. a breakfast cereal contains corn, wheat, and rice in the ratio of 3 to 4 to 2. if a box of cereal contains 225g of corn, how much rice does it contain?
150 grams of rice. 225/3= 75. 75 x2= 150.
10.set up a proportion a) if 10 beans have a mass of 17g,then 30 beans have a mass of 51g.
10beans/ 17g= 30beans/51g
"nooooo you have defeated me"
Jim's alien post
How I stopped an alien invasion
A Alien plant was invaded and some aliens got off there plant before it was destroyed. When the alien leader was asking where to go his crew said "lets go to earth!" The aliens threatened and took over earth. The only way to stop them was to solve an proportion question.
Walter makes his own oil and vinegar dressing. His recipe calls for 175 ML of vinegar. What amount of vinegar does he need to mix with 300 ML of olive oil?
answer: 175ml/50ml= 30ml/x ml
a baseball player has a home run to strikeout ratio of 3:17. How many home runs should he hit if he strikes out 187 times?
answer: 3 home runs/17 strikeouts = x home runs/187 strikeouts
Two quarters have the same value as ten nickels. What is the value of 5 quarters in nickels?
25 nickels
Yay the aliens got defeated with our large brains! :D
A Alien plant was invaded and some aliens got off there plant before it was destroyed. When the alien leader was asking where to go his crew said "lets go to earth!" The aliens threatened and took over earth. The only way to stop them was to solve an proportion question.
Walter makes his own oil and vinegar dressing. His recipe calls for 175 ML of vinegar. What amount of vinegar does he need to mix with 300 ML of olive oil?
answer: 175ml/50ml= 30ml/x ml
a baseball player has a home run to strikeout ratio of 3:17. How many home runs should he hit if he strikes out 187 times?
answer: 3 home runs/17 strikeouts = x home runs/187 strikeouts
Two quarters have the same value as ten nickels. What is the value of 5 quarters in nickels?
25 nickels
Yay the aliens got defeated with our large brains! :D
Thursday, December 17, 2009
How aliens helped Devin using proportion
Two days before the school dance a guy named Devin had to finish his homework to go to it but just when he got stuck on 3 promblems he needed help and he didnt know what to do but just when he was about to give up. A space ship comes from the sky and an alien comes out.Then just when Devin goes outside the alien sayed ''Theres no more oil in the ship will you help me'' and Devin sayed ''sure I will help you but you got too help me with 3 promblems'' the alien sayed ok.1.What is the ratio of red tiles to titles?Explain your answer in 3 different ways
2.Deila was paid $35 for 5 h of babysitting.How much will she recieve in 3 hours?Use unit rate to find your answer.
Answer:she would recieve $21 for 3 hours
3.David can saw a log into three pieces in 7 minutes.If he continues sawing at a constant rate,
how long will it take him to saw a similar log into six pieces?
how long will it take him to saw a similar log into six pieces?
Answer:David will take 13.8 minutes for 6 pieces.

After Devin gets the answers from the alien the alien for some reason died because he couldnt handle the earths air.
charis' growing post
definitions :
ratio - compares 2 quantities measured in different units.
rate - compares 2 quantities measured in the same units.
difference :
The difference is that ratio compares two different quantities in the same units and rate compares two different quantities in different units.
questions :
How many pennies would there be in 7 jars ? if there were 5840 pennies in 7 jars , how much would there be in a jar ? 5840 divided by 7 = 834 . so there would be 834.. pennies in 7 jars.
Determine the unit rate in each situation.
question : An orca swims 110 km in 2 hours.
You can get the answer by first getting the hours to 1 hour for the unit rate. so divid it by itself which is 2, then you get 1. You do the same to the other side and you get 55.
answer: orca whale swims 55 km/h
question : A Canada goose flies 800 km in 12.5 hours.
You divide each side by 12.5 and you get 64 on the km and 1 in the hours.
answer : Canada goose flies 64 km / h.
question : Cathy plants 45 daffodils in 30 min.
You multiply each side by 2. Which gets you the answer 90 daffodils/ h.
part 2
10 ÷ 4 = 2.5
ground beef - 0.5 x 2.5 = 1.25
stalk celery finely diced - 1 x 2.5 = 2.5
clove garlic, minced - 1 x 2.5 = 2.5
canned tomatoes, chopped - 14 x 2.5 = 35
oz can tomato paste - 0.5 x 2.5 = 1.25
parsley - 1 x 2.5 = 2.5
tsp basil - 1.5 x 2.5 = 3.75
tsp oregano - 1 x 2.5 = 2.5
tsp sugar - 1 x 2.5 = 2.5
tsp Worcestershire Sauce - 0.5 x 2.5 = 1.25
tsp seasoning salt - 0.5 x 2.5 = 1.25
tsp bay leaf - 1 x 2.5 = 2.5
What would the recipe look like if you had to only serve 1 person? Show your calculations.
10 ÷ 1 = 10
ground beef - 1.25 ÷ 10 = 0.125
lb medium onion, diced - 2.5 ÷ 10 = 0.25
stalk celery finely diced - 2.5 ÷ 10 = 0.25
clove garlic, minced - 2.5 ÷ 10 = 0.25
canned tomatoes, chopped - 35 ÷ 10 = 3.5
oz can tomato paste - 1.25 ÷ 10 = 0.125
parsley - 2.5 ÷ 10 = 0.25
tsp basil - 3.75 ÷ 10 = 0.375
tsp oregano - 2.5 ÷ 10 = 0.25
tsp sugar - 2.5 ÷ 10 = 0.25
tsp Worcestershire Sauce - 1.25 ÷ 10 = 0.125
tsp seasoning salt - 1.25 ÷ 10 = 0.125
tsp bay leaf - 2.5 ÷ 10 = 0.25
ratio - compares 2 quantities measured in different units.
rate - compares 2 quantities measured in the same units.
difference :
The difference is that ratio compares two different quantities in the same units and rate compares two different quantities in different units.
questions :
How many pennies would there be in 7 jars ? if there were 5840 pennies in 7 jars , how much would there be in a jar ? 5840 divided by 7 = 834 . so there would be 834.. pennies in 7 jars.
Determine the unit rate in each situation.
question : An orca swims 110 km in 2 hours.
You can get the answer by first getting the hours to 1 hour for the unit rate. so divid it by itself which is 2, then you get 1. You do the same to the other side and you get 55.
answer: orca whale swims 55 km/h
question : A Canada goose flies 800 km in 12.5 hours.
You divide each side by 12.5 and you get 64 on the km and 1 in the hours.
answer : Canada goose flies 64 km / h.
question : Cathy plants 45 daffodils in 30 min.
You multiply each side by 2. Which gets you the answer 90 daffodils/ h.
part 2
What would the recipe look like if it had to serve 10 people? Show your calculations.
10 ÷ 4 = 2.5
ground beef - 0.5 x 2.5 = 1.25
stalk celery finely diced - 1 x 2.5 = 2.5
clove garlic, minced - 1 x 2.5 = 2.5
canned tomatoes, chopped - 14 x 2.5 = 35
oz can tomato paste - 0.5 x 2.5 = 1.25
lb medium onion, diced - 1 x 2.5 =
parsley - 1 x 2.5 = 2.5
tsp basil - 1.5 x 2.5 = 3.75
tsp oregano - 1 x 2.5 = 2.5
tsp sugar - 1 x 2.5 = 2.5
tsp Worcestershire Sauce - 0.5 x 2.5 = 1.25
tsp seasoning salt - 0.5 x 2.5 = 1.25
tsp bay leaf - 1 x 2.5 = 2.5
What would the recipe look like if you had to only serve 1 person? Show your calculations.
10 ÷ 1 = 10
ground beef - 1.25 ÷ 10 = 0.125
lb medium onion, diced - 2.5 ÷ 10 = 0.25
stalk celery finely diced - 2.5 ÷ 10 = 0.25
clove garlic, minced - 2.5 ÷ 10 = 0.25
canned tomatoes, chopped - 35 ÷ 10 = 3.5
oz can tomato paste - 1.25 ÷ 10 = 0.125
parsley - 2.5 ÷ 10 = 0.25
tsp basil - 3.75 ÷ 10 = 0.375
tsp oregano - 2.5 ÷ 10 = 0.25
tsp sugar - 2.5 ÷ 10 = 0.25
tsp Worcestershire Sauce - 1.25 ÷ 10 = 0.125
tsp seasoning salt - 1.25 ÷ 10 = 0.125
tsp bay leaf - 2.5 ÷ 10 = 0.25
Wednesday, December 16, 2009
Emmanuels Scribepost for December 14
QUESTION 13!!
Q:A small triangular flower bed has a square
stepping stone at each of its sides. Is the
flower bed in the shape of a right triangle?
Explain your reasoning.
A:Well, since the area of the legs are 4800cm squared, and the hypotenuse's area is 9800cm squared, the pythagorean relationship will not work! Since the formula is a2+b2=c2, a2 and b2 would fall short equaling 9600cm2. So because of the pythagorean relationship, this triangle is not a right triangle!
stepping stone at each of its sides. Is the
flower bed in the shape of a right triangle?
Explain your reasoning.
A:Well, since the area of the legs are 4800cm squared, and the hypotenuse's area is 9800cm squared, the pythagorean relationship will not work! Since the formula is a2+b2=c2, a2 and b2 would fall short equaling 9600cm2. So because of the pythagorean relationship, this triangle is not a right triangle!
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