Ratios
What do you call a ratio that compares two things?
part to part
Write 2 equivalent ratios for 1:2
2:4, 3;6, etc.
2(x + 3) = 8
x = 1
(-8) + 3 x (-9)
-35
(-4) - 8
-12
What do you call a ratio that compares one thing to the total things in a set?
part to whole
Write 3 equivalent ratios for 2:5
4;10, 6:15, 8:20, 20:50, 200:500, etc.
5(x - 2) = 20
x = 6
Estimate the square root of 37
6.1
Which second year player just broke the San Jose Sharks record for most points in a season?
Macklin Celebrini
What do you call a ratio that compares 3 or more things?
part to part to part
Write 4 equivalent ratios for 60:6. 2 must be larger and 2 must be smaller
30:3, 10:1, 20:2, 70:7, 80:8, 120:12, 600:60, etc.
7(x - 9) = 49
x = 16
c = 9cm
b = 5cm
a = ?
a = 7.5cm
Have you been watching the weather? How warm is it supposed to be on Tuesday this week?
20 degrees!!
A box of smarties has 10 red, 7 blue, 3 green, 4 brown, 6 yellow and 5 purple. What is the ratio of green to purple?
3:5
2:3 = 18:x
x = 27
4(2x + 5) = 60
x = 5
3/7 x 28/15
4/5
Which sport did Mr Erickson coach for the first time this year?
hockey
A box of smarties has 10 red, 7 blue, 3 green, 4 brown, 6 yellow and 5 purple. What is the ratio of red to total smarties?
10:35 OR 2:7
x:49 = 18:14
x = 63
6(4x - 3) = 78
x = 4
What is the surface area of a right angle triangular prism, with sides of 6cm , 8cm , 10cm, and a height of 5cm.
168cm2
What do you call a triangle that has all sides equal?
an equilateral triangle