February 25, 2016
7.1 Ratios and Proportions
HW: p 464 #14-20 even,
21-24, 30, 34-37, 40
February 25, 2016
WARM-UP
At CHS there are 91 teachers and 871 students. The
student-teacher ratio is? What would it be as a unit rate?
What is a ratio?
What is a unit rate?
February 25, 2016
Ex 1 The ratio of three angles of the triangle is 3:4:5. Find
the angle measurements.
Extended ratios can be used to compare three or more
quantities a:b:c
February 25, 2016
Ex 2 - The perimeter of a triangle is 392 inches, the ratio of
the sides is 3:3:8. What is the length of the longest side?
February 25, 2016
An equation stating two ratios are equal is called a
__________________.
February 25, 2016
February 25, 2016
February 25, 2016
February 25, 2016
3.
4.
February 25, 2016
7.Sealsatanaquariumareeachfed8poundsoffoodforevery100pounds
oftheirbodyweight.Asealattheaquariumweighs280pounds.Howmuch
foodshouldthesealbefedperday?
February 25, 2016
8.Astudentcanread7pagesofabookin10minutes?Howmanypagesof
thebookcanthestudentreadin30minutes?
February 25, 2016
9.Thelabelonacanofpaintstatesthatonegallonofthepaintwillcover
560squarefeet.Howmanygallonsofthatpaintareneededtocover1400
squarefeet?
February 25, 2016
13.
14.