Download presentation

1
**Quadratic Word Problems WS 2 Solutions**

#1 10 inches #2 15 cm by 7 cm #3 a ft b sec c & 5.70 sec #4 72 units #5 96 cm #6 Height is 5.25 m or 5 m and 25 cm Distance is 3.79 meters or 3 m and 79 cm

2
#1 2x + 15 2x + 20 ft x 12 in/ft About 10 inches

3
**The dimensions of the rectangle are 15 cm by 7 cm**

#2 Perimeter = 44 cm Area = 105 sq. cm Width = W 2L + 2W = 44 L + W = 22 Length = L L = 22 - W The dimensions of the rectangle are 15 cm by 7 cm (L)(W) = 105 (22 - W)(W) = 105 22W – W2 = 105 W2 – 22W = 0 (W - 15)(W - 7) = 105

4
#3a h = -16t t First find Axis of Symmetry Plug it in to get the vertex Solving for h will give the maximum point (or highest point)

5
#3b h = -16t t Two ways to solve … Why does this work? Alternate solution 0 = -16t t 0 = -4t(4t – 25) t = 0 or 6.25

6
#3c h = -16t t 50 = -16t t 16t t + 50 = 0 8t2 - 50t + 25 = 0

7
#4 x x x + 6 x + 9

8
**Width = w Length = 3w Volume = L x W x H 512 = (3w - 4)(w - 4)(2)**

Perimeter = 96 cm 256 = 3w2 – 16w + 16 0 = 3w2 – 16w - 240 0 = (w – 12)(3w + 20) Width = 12 cm

9
**#6 Mr. Lomas (at least the way I remember me) ….**

Maximum height (at vertex) height when I hit the water? 3 meters Distance from board when entering water?

10
Maximum height of 525 cm

11
#7 Equation: y = x2 - 10x + 15 Direct: Up Width: Standard L of S: x = 5 Vertex: (5, -10) y-int: (0, 15) Roots:

12
#8 Equation: y = -2x2 + 8 Direct: Down Width: Narrow L of S: x = 0 Vertex: (0, 8) y-int: (0, 8) Roots: 2 or -2

13
#9 Equation: y = (1/4)x2 - 2x - 5 Direct: Up Width: Wide L of S: x = 4 Vertex: (4, -9) y-int: (0, -5) Roots: 10 or -2

Similar presentations

Presentation is loading. Please wait....

OK

Angstrom Care 培苗社 Quadratic Equation II

Angstrom Care 培苗社 Quadratic Equation II

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on google glasses Ppt on exchange rate system Ppt on national education policy 1986 Ppt on ball mill Ppt on area of plane figures geometry Edit ppt on ipad 2 Ppt on synthesis and degradation of purines and pyrimidines are Keynote read ppt on iphone Ppt on c language basics pdf Download ppt on cell organelles and their functions