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The following diagram shows a triangle with sides 5 cm, 7 cm, 8 cm.

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Presentation on theme: "The following diagram shows a triangle with sides 5 cm, 7 cm, 8 cm."— Presentation transcript:

1 The following diagram shows a triangle with sides 5 cm, 7 cm, 8 cm.
diagram not to scale Determine if this could be a right triangle. No, it could not.

2 The diagram shows a rectangular prism 22.5 cm by 40 cm by 30 cm.
H G E F A B D C 40 cm 30 cm 22.5 cm Calculate the length of [AC]. 37.5 cm

3 x = 1.28 m

4 4.70 m

5 The following diagram shows a carton in the shape of a cube 8 cm long on each side:
The longest rod that will fit on the bottom of the carton would go from E to G. Find the length l of this rod. (b) Find the length L of the longest rod that would fit inside the carton. = 11.3 cm = 13.9 cm

6 A square garden with sides 100 m is divided into two triangular plots by a fence along one diagonal.
What is the length of the fence in meters? If the fence costs $15.50 per meter, what is the total cost? 141 m $2186 Math 1 text, page 102, #10

7 Write down the length of [GM]. (b) Calculate the length of [VM].
In the diagram below, PQRS is the square base of a solid right pyramid with vertex V. The sides of the square are 8 cm, and the height VG is 12 cm. M is the midpoint of [QR]. Diagram not to scale Write down the length of [GM]. (b) Calculate the length of [VM]. V P G Q M R S 8 cm = 4 cm = 12.6 cm

8 Two ships B and C leave a port A at the same time
Two ships B and C leave a port A at the same time. Ship B travels in a direction 067 at a constant speed of 36 km/h. Ship C travels in a direction 157 at a constant speed of 28 km/h. Find the distance between them after 2 hours. 91.2 km Studies text, page 101 #8

9 Find the value of any unknown.
Math 3 text, page 85 #6b

10 = 87.1 km A sailing ship sails 46 km North and then 74 km East.
How far is the ship from its starting point? = 87.1 km SL text, page 206 #4

11 Simplify a) (4x3y5)3

12 Simplify

13 Solve for x: 5(x + 2) – 2(3 – 2x) = 3

14 Solve for x: x(2x + 1) – 2(x + 1) = 2x(x – 1) x = 2

15 Solve for x:

16 Solve for x:

17 Solve for x:

18 Solve for x. 4x = 8

19 Solve for x.

20 solve by elimination 2x + 7y = 2 3x + 5y = -8 (-6, 2)

21 solve by substitution 5x – y = -11 4x + 12y = 4 (-2, 1)

22 p = 14 32p + 36w = 808 w = 10 8p + 12w = 232 14 pans of pasta
A caterer is planning a party for 232 people. The customer has $808 to spend. A $32 pan of pasta feeds 8 people and a $36 sandwich tray feeds 12 people. How many pans of pasta and how many sandwich trays should the caterer make? p = no. of pans of pasta w = no. of trays of sandwiches 32p + 36w = 808 8p + 12w = 232 p = 14 w = 10 14 pans of pasta 10 sandwich trays

23 2 Big Macs and 1 Coke would cost 37 Bsf.
The bill for 3 Big Macs and 2 Cokes is 59 Bsf. The bill for 7 Big Macs and 8 Cokes is 161 Bsf. What would be the bill for 2 Big Macs and 1 Coke? b = cost of 1 Big Mac c = cost of 1 Coke 3b + 2c = 59 7b + 8c = 161 b = 15 Bsf c = 7 Bsf 2 Big Macs and 1 Coke would cost 37 Bsf.

24 m = 7 m + d = 10 d = 3 350d + 310m = 3220 7 days in Miami
Your family is planning a 10 day trip to Florida. You estimate that it will cost $350 per day in Orlando and $310 per day in Miami. Your total budget for the 10 days is $ How many days should you spend in each location? m = no. of days in Miami d = no. of days in Orlando m + d = 10 350d + 310m = 3220 m = 7 d = 3 7 days in Miami 3 days in Orlando

25 George is 10 years older than Jane
George is 10 years older than Jane. Three years ago Jane was ¾ as old as George. How old is George now? George is 43 years old.

26 Write as powers of 2, 3, or 5 =2-2 =3-3x =5-2

27 Solve for x.

28 Find the equation of the line that goes through the points (-3, 6) and (-2, 4).
y = -2x

29 Write the equation, in standard form, of the line that passes through (-2, 5) and (3, 1)

30 Write the equation of the line, in standard form, with slope and containing the point (4, -1).
3x + 4y = 8

31 Given that M is the midpoint of PT, find the coordinates of T if P is (6, -2) and M is
T is (2, -9)

32 Find the midpoint of the line segment AB given A(-5, -3) and B(9, 3)
(2, 0)

33 Find the distance between (2, -4) and (-5, -1)

34 Find the negative value of b given that the distance between (-2, 5) and (3, b) is

35 A line passes through the point (-5, -7) and has a slope of 10
A line passes through the point (-5, -7) and has a slope of 10. Write the equation for this line in slope-intercept form. y = 10x + 43

36 Graph x + 2y = 4

37 Write the equation of the graph below.

38 Graph x = -2

39 by finding the x- and y-intercepts
Graph 3x – 5y = 15 by finding the x- and y-intercepts x-intercept: 3x – 5(0) = 15 x = 5 y-intercept: 3(0) – 5y = 15 y = -3 (0, -3) (5, 0)

40 Graph the line with slope 0 and containing the point (3, -5)

41 Use technology to find the point of intersection of 5x – y = -11 and
(-2, 1)

42 Write the equation, in standard form, of the line containing the point (-1, 3) and parallel to the line 3x + 7y = 70. 3x + 7y = 70

43 Write the standard form of the equation of the line perpendicular to x – 6y + 30 = 0
and passing through the point (5, 3) 6x + y = 33

44 Use the distance formula to determine if triangle ABC is scalene, isosceles or equilateral.

45 Formulae you will need to know:
Distance Midpoint Slope Slope-intercept Pythagorean theorem


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