Business The vector u = 1225 , 2445 gives the numbers of hours worked by employees of a temporary work agency at two pay levels. The vector v = 12.20 , 8.50 gives the hourly wage (in dollars) paid at each level, respectively. (a) Find the dot product u ⋅ v and interpret the result in the context of the problem. (b) Identify the vector operation used to increase wages by 2 %
Business The vector u = 1225 , 2445 gives the numbers of hours worked by employees of a temporary work agency at two pay levels. The vector v = 12.20 , 8.50 gives the hourly wage (in dollars) paid at each level, respectively. (a) Find the dot product u ⋅ v and interpret the result in the context of the problem. (b) Identify the vector operation used to increase wages by 2 %
Business The vector
u
=
1225
,
2445
gives the numbers of hours worked by employees of a temporary work agency at two pay levels. The vector
v
=
12.20
,
8.50
gives the hourly wage (in dollars) paid at each level, respectively.
(a) Find the dot product
u
⋅
v
and interpret the result in the context of the problem.
(b) Identify the vector operation used to increase wages by
2
%
Quantities that have magnitude and direction but not position. Some examples of vectors are velocity, displacement, acceleration, and force. They are sometimes called Euclidean or spatial vectors.
7. From a point 20 m away on a level ground, the angle of elevation to the bottom of a
the top of the window is 32°. Calculate the
window is 27° and the angle of elevatim
height of the window.
(3 marks)
32
SOUCAHTOA
Rom
Coso-Adj
opponite
1270
H
X
Hyp
Tant=OPP
Adj
20 #
Zom
Adjacent
CoS2E 20 XHX Tanz 20
20
K
-0.0445503261 -1.764201788
0-044550326 60044550320
(1 mark) 3960
8. All odd numbers from 1 to 10 are arranged in descending order to form a number.
(i) Write the number.
35798.
97531
31
(ii) Write the total value of the second digit of the number formed in (a) (i)
FA 7X1000-7000
이
(1 mark)
9. A cylinder has a diameter of 28 cm and the height is 18 cm. Calculate its volume.
2
22 × 14 × 14 × 18
-110880m
3
(3 marks)
10. The figure below shows a right pyramid with AB = 3 cm, BC = 5 cm, and AV
VC = VD = 4 cm. Draw its net.
V
3+
12
7/18
(2/20
2105
SSS
20
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