0
Upcoming SlideShare
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Standard text messaging rates apply

# 3.5 & 3.6 writing and solving ratios and proportions day 1-

418

Published on

Published in: Sports, Technology
0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total Views
418
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
8
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Transcript

• 1. Write Ratios &amp; Proportions Section 3.5 P. 162-167
• 2. &#x2022; We will review the concept of a ratio and a proportion.&#x2022; We will solve proportions algebraically.&#x2022; We will relate proportions to real-world situations.
• 3. &#x2022; What is a ratio? A ratio uses division to compare two quantities.&#x2022; How can ratios be written? a to b a:b a bAll the above are read &#x201C; a to b.&#x201D;Ratios should be written in simplest form.
• 4. &#x2022; A volleyball team plays 14 home matches and 10 away matches.&#x2022; Find the ratio of home matches to away matches.&#x2022; Find the ratio of home matches to all matches.&#x2022; Find the ratio of away to home matches.&#x2022; Write your answer in simplest form.
• 5. &#x2022; What is a proportion?&#x2022; A proportion is an equation that states that two ratios are equivalent. a c , where b, d 0 b d
• 6. &#x2022; Many times one of the values of a proportion is unknown. You can solve a proportion using the same methods you used to solve equations.&#x2022; Some proportions can also be solved by the concept of equivalent ratios.
• 7. Setting up a proportion&#x2022; 3 is to 8 as x is to 32 solve for &#x201C;x&#x201D;&#x2022; y is to 10 as 7 is to 2 solve for &#x201C;y&#x201D;
• 8. w 435 7
• 9. 36 x 72 10Hint: may need to simplify ratio first.
• 10. r 90.5 2.5
• 11. &#x2022; A printer can print 12 color pages in 3 minutes. How many color pages can the printer print in 9 minutes?&#x2022; Write a proportion and solve.
• 12. &#x2022; One day, the ratio of skiers to snowboarders on the mountain at a ski resort was 13:10. The resort sold a total of 253 lift tickets during the day.&#x2022; Find the ratio of snowboarders to all the skiers and snowboarders.&#x2022; Use the ratio to find the number of lift tickets sold to snowboarders during the day.
• 13. &#x2022; Assignment: P. 165 (#2-30 evens only) Copy the problems