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Type: Posts; User: mathboy15

1. ## Question: Rectabgle area

by mathboy15
1
Views
696

### rectabgle area

A rectangle has the dimensions x and x+5.
It's area is 84cm^2. solve for x show working.
I know that x is 7 but. I don't know how to show it tips please`?
2. ## Question: Motion

by mathboy15
1
Views
411

### Motion

An object moving in a straight line and has initial displacement of 8.00m.find displacement after 8.00sec 12sec and what's the average speed and average veloity of this motion
3. ## Question: The Sine and Cosine Rules

by mathboy15
3
Views
1,514

### Thank you very much for your help guys :D

Thank you very much for your help guys :D
4. ## Question: The Sine and Cosine Rules

by mathboy15
3
Views
1,514

### The Sine and Cosine Rules

Hi! =)
I have tried to solve this question for a long time now, but I'm still not able to solve it =S
Can you guys pllease help me? =)
THANKS =)

Mary and Jane were standing one behind the...

by mathboy15
20
Views
7,705

Thank you =)
6. ## Question: Quadratic equation questions

by mathboy15
20
Views
7,705

### Quadratic equation questions :) 8

8.

A circular magnet has an inner radius x cm, an outer radius 2 cm larger and its depth is the same as the inner radius (as shown).
If the total volume of the magnet is 120 pi cm^3, find x
7. ## Question: Quadratic equation questions

by mathboy15
20
Views
7,705

### Quadratic equation questions :) 7

A rectangle swimming pool is 12 m long by 6 m wide. It is surrounded by a pavement of uniform width, the area of the pavement being 7/8 of the area of the pool.

a) If the pavement is x m wide,...
8. ## Question: Quadratic equation questions

by mathboy15
20
Views
7,705

### Quadratic equation questions :) 6

6.

A square sheet of cardboard has sides 20 cm long. Its is to be made into an open box with a base having an area of 100 cm^2, by cuting out equal squares from the four corners and then bending...
9. ## Question: Quadratic equation questions

by mathboy15
20
Views
7,705

### Quadratic equation questions :) 4

4.

The sum of a number and its reciprocal is 2*2/12 . Find the number.

5.

The sum of a number and twice its reciprocal is 3*2/3. Find the number
10. ## Question: Quadratic equation questions

by mathboy15
20
Views
7,705

### Quadratic equation questions :) 3

3.

AB is 2cm longer than BE. DC is 3 cm less than twice BE.

a) Explain why triangles ABE and ACD are similar.

b) If BE = x cm, show that x^2 - 4x - 6 = 0.

c) Hence, show that BE = 2 +...
11. ## Question: Quadratic equation questions

by mathboy15
20
Views
7,705

### Quadratic equation questions :) 2

2.

A, B, C and D are posts on the banks of a 20m. Wide canal. A and B are 1 m apart.

If OA is the same length as CD, find how far C and D are apart.
12. ## Question: Quadratic equation questions

by mathboy15
20
Views
7,705

1.

ABCD is a rectangle in which AB = 21 cm.
The square AXYD is removed and the remaining rectangle has area 80 cm^2.
Find the length BC.
13. ## Question: Wireless internet

by mathboy15
9
Views
1,404

### The laptop might already have a inbuilt wireless...

The laptop might already have a inbuilt wireless connection but if it hasn't then you need to buy a wireless stick.
14. ## Question: Wireless Internet

by mathboy15
1
Views
629

### Have you searched for viruses? And if that...

Have you searched for viruses? And if that doesn't help you can first plug into the net by the cable and then try to go wireless again.
Hope this helps.

by mathboy15