Math 1/8 1/9 Assignment Borg

Hand out from Home Instructor 1/8



















1.
Brian = 14, Father = 41
Reverse numbers pairs can be written as (10a+b) and (10b+a)
For 41 and 14 we have, (10a+b) - (10b+a) = 41–14 = 27
Therefore age difference between father and son is 27 years. This will never change.
So we have (10a+b) - (10b+a) = 27 and we have to find all values of a and b that will satisfy this equation.
Therefore (10a+b) - (10b+a) = 9a - 9b = 27
Therefore, a - b = 3
For all a’s and b’s who have their difference as 3 will answer the question. Such pairs are (4,1) (5,2) (6,3) (7,4) (8,5) …. and so on
Since father’s age today is 41, the next age to satisfy the condition is 52 making son’s age to be 52 - 27 = 
25 
which is the reverse of 52.

2.
13 + 10+ 7 = 30
Magic square
13.  6.    11 
8.   10.  12
9.   14 .   7

 3. 21 less than 60,000 = 59,971

 4. 
Sophie Germain lived 1776-1831 = 55 years
Sonja lived 1850-1891 = 41 years
Emmy lived 1882-1935 = 53 years
Shortest lived = Sonja, then Emmy, then Sohie

 5.
Twenty questions
7*Correct -2*wrong+0 for omitted
87 points how many omitted?
7C -2W + 0M = 87
C + W +     M = 20

13*7 = 91 ; 13 correct
-2*2 = -4;  2 Wrong
leaves 
5 omitted. 



1/9





































1.
Notice
600 for first 100 trips = 6/trip
1600 for 300 trips = 5.33/trip
Wonder: How long is each trip?

2. Which is the better deal?
All things equal trip lengths, the 1st deal better.

3. How do you know? Price per trip

4. Make up some other ads that would.
a) Pay me a little more
400 trips for 2800 = 7 per trip

b) Pay a little less.
1000 for 200 trips = 5/trip

the same as these.
1200 for 200 trips same as the first,
$3200 for 600 trips = same as the 2nd.

End


Comments

Post a Comment

Popular posts from this blog

CommonLit: MALALA YOUSAFZAI'S NOBEL PEACE PRIZE LECTURE Ms. Mulligan

Malala Yousafzai (born 1997) is a Pakistani education activist and the youngest-ever Nobel Prize laureate. Yousafzai was born in Swat District, Pakistan, and her family ran a chain of schools in the region. When Yousafzai was 14 she was shot in the head by the Taliban, an Islamic extremist group, for her advocacy of equal education. Following her recovery, she continued to advocate for education. In the following speech, Yousafzai discusses her commitment to education.   As you read, take notes on how access to education is different around the world. Malala Yousafzai (born 1997) is a Pakistani education activist and the youngest-ever Nobel Prize laureate. Yousafzai was born in Swat District, Pakistan, and her family ran a chain of schools in the region. When Yousafzai was 14 she was shot in the head by the Taliban, an Islamic extremist group, for her advocacy of equal education. Following her recovery, she continued to advocate for education. In the following s...
Read more

ELA The Integrity of Pineapple Pizza

The Integrity of Pineapple Pizza by Sarah Celestin, 16 For many years those who enjoy pineapple on their pizza have faced ridicule. Many people strongly disagree with the combination pineapple and pizza, and it is understood that not all opinions are always completely agreed on, but the perspectives of pineapple pizza eaters have been disrespected for far too long. The outright disgust expressed by non-pineapple pizza eaters is a contradiction to some of of the world’s favorite foods. For centuries various fruits,such as mango and watermelon, have been topped with salt and chili mixes, but the reaction to the list of concoctions previously stated do not even begin to compare to the reactions to pineapple pizza. Salted caramel, kettle corn, chocolate covered pretzels, peanut butter and jelly sandwiches: these are all snacks that are widely loved, but carry the same flavor profiles as pineapple pizza. So why is pineapple pizza so hated? Scientifically pineapple pizza stimulates two ...
Read more

CommonLit WHY ARE BEES VANISHING? Scientists find a combination of threats that may explain declining honeybee populations by Alison Pearce Stevens2014 Ms. Mulligan

Honeybees are an important part of Earth’s ecosystem—they pollinate plants, which produce food. Over the past ten years, researchers have been trying to figure out why so many honeybee colonies are collapsing.    As you read, find evidence to answer the following questions: Why are bees vanishing? How could this affect us? The post office is buzzing as package after package of honeybees await delivery to their new homes. The tiny hooked feet of some worker bees cling to the screens on the sides of each wooden case. Other worker bees huddle around a small central cage containing their queen. Sorting and delivering packages of live honeybees isn’t the favorite task of postal workers. Still, it is a job they have to handle more and more often. That’s because beekeepers in the United States and Europe have been losing bees to a mysterious condition known as colony1 collapse disorder, or CCD. Each mail-order package contains the seed of a new honeybee colony to replace one t...
Read more