When 2xยณ - 5xยฒ + 4x-8 is divided by axยฒ + bx +c the quotient is x-2 and the remainder is bx -a. Then what are the value of a, b and c respectively?
Anonymous Quiz
37%
2, -1 and 3
39%
-1, -2 and 3
21%
1, 2 and 3
3%
-1, 2 and 3
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1. แจ1k แ แแญ
2. แจ5k แ แแญ
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4,แจ15k แ แแญ
5, แจ 20k แ แแญ
6, แจ 25k แ แแญ
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โค1
Forwarded from Maths Group11
Which one of the following statement is exactly true about the graph of a polynomial function of degree 4?
Anonymous Quiz
32%
It has 3 turning points.
36%
The graph crosses x - axis at 4 times.
26%
The graph crosses y - axis at only once.
6%
The doesn't have relative extremum value.
โค3
โค6๐ค2
โค6
Which one of the following statement is not true about the purposes of simple machines?
Anonymous Quiz
9%
They are force multipliers.
6%
They are direction changers.
34%
They can act as both force multipliers and direction changers at the same time.
51%
They can act as both force multipliers and speed multipliers at the same time.
#Adwa
Baga ayyaana injifannoo Adwaa waggaa 130ffaa, mallattoo bilisummaa fi kabajaa saba gurraachaa addunyaa guutuu isiniin gaโe.
แฅแแณแ แ130แแ แจแแแ แฅแแญ แแแฆแฝ แจแแแแต แแ แแ แแแแ แณแแ แจแแตแ แตแ แ แแ แ แฐแจแณแฝแแกแก
แแแซแ แจแตแ แ แแ๐
Happy Ethiopian Victory Day Adwa
@maths_group11
Baga ayyaana injifannoo Adwaa waggaa 130ffaa, mallattoo bilisummaa fi kabajaa saba gurraachaa addunyaa guutuu isiniin gaโe.
แฅแแณแ แ130แแ แจแแแ แฅแแญ แแแฆแฝ แจแแแแต แแ แแ แแแแ แณแแ แจแแตแ แตแ แ แแ แ แฐแจแณแฝแแกแก
แแแซแ แจแตแ แ แแ๐
Happy Ethiopian Victory Day Adwa
@maths_group11
๐ฅ7
A simple machine is able to move a 400N load a distance of 20cm when a force of 20N is moved the distance of 5m, then what is the actual mechanical advantage and the efficiency of the machine ?
Anonymous Quiz
6%
25 and 80%
32%
0.04 and 80%
52%
20 and 80%
9%
0.2 and 80%
A simple machine has an efficiency of 0.75 and velocity ratio 12. Then what is the load that can be moved if an effort of 100N is applied?
Anonymous Quiz
20%
9N
57%
900N
13%
75N
10%
1200N
An effort is 200N is applied on to a wedge of 4cm thick and 12cm long to split a log of 500N into parts. Then what is the efficiency of the wedge?
Anonymous Quiz
47%
83.33%
28%
75%
17%
80. 34%
8%
66.67%
Which simple machine can not be used to increase force?
Anonymous Quiz
21%
Lever
25%
Wheel and axle
40%
Fixed pulley
15%
Movable pulley
โค1
A 10cm long and 2cm wide metal wedge is used to split a wood. What is the velocity ratio of the wedge?
Anonymous Quiz
9%
3
28%
0.2
51%
5
12%
20
A screw shaft has a diameter of 4cm and its adjacent threads are 0.314cm apart. What is the velocity ratio of the screw?
Anonymous Quiz
15%
10
29%
20
27%
30
29%
40
๐8
If an inclined plane of 4m length and 1m height has an efficiency of 0.5, what is its mechanical advantage?
Anonymous Quiz
10%
3
78%
2
11%
5
2%
6
Which one of the following statement is true about the classes of lever in simple machines?
Anonymous Quiz
51%
In 2nd class lever, load is located between effort and fulcrum.
25%
In 3rd class lever, fulcrum is located between load and effort.
15%
In 1st class lever, effort is located between fulcrum and load.
8%
In 2nd class lever, VR is less than MA.
Which one of the following statement is true about simple machines?
Anonymous Quiz
12%
If the machine is speed multipliers, then its VR > 1 due to its distance moved by load is large.
31%
If the machine is force multipliers, then its MA is greater than VR due to its load is large.
26%
If the machine has no energy loses, its efficiency is greater than 1 due to its MA is equal to VR.
31%
If the machine is force multipliers, its VR > 1 due to its distance moved by load is less.
If the efficiency of one machine is 100%, then which one of the following is not true?
Anonymous Quiz
12%
Its velocity ratio is equal to MA.
20%
Its IMA is equal to its AMA.
27%
There is no energy loses in the machine.
41%
The types of machines must be inclined plane, screw, and wedge to get 100% efficiency.
A 200N force is required to be applied at one end of 1m long lever. If the distance from the effort to fulcrum is 80cm, inorder to lift a load of 600N placed at the other end. What is the efficiency of the lever?
Anonymous Quiz
17%
83%
47%
75%
15%
17%
21%
25%
๐2