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Marrrta [24]
2 years ago
13

a tank 2m tall stands on the top of a concrete pillar. From point P on the same horizontal ground as the foot of the pillar, the

angles of elevation of the top T and bottom B of the tank are 49 degress and 42 degrees respectively. Calculate correct to one decimal place the height of the pillar​
Mathematics
1 answer:
kogti [31]2 years ago
5 0

Answer:

2

3 \times 3

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Help me to work this out
irinina [24]
Since the perimeter of the square is 16cm, each side is 4cm.

If we subtract the area of the two unshaded triangles from the area of the square we will know the area of the shaded portion...

The small inverted triangle on the left has a height of 4 and a base of 1.  The are of the bottom triangle has a height of 2 and a base of 4...

So the area of the two triangles is 4*1/2+2*4/2=2+4=6

The area of the square is just 4*4=16 so:

The shaded area is 16-6=10cm^2  

The proportion of the shaded area to the total area is then:

10cm^2:16cm^2

5:8
4 0
4 years ago
Thanks guys for all the help :)
ale4655 [162]

Answer:

(2,  6) .

Step-by-step explanation:

The point A has coordinates (5, 9) and B  has coordinates (-1, 3).

The midpoint is (5 + -1)/2 ,  (9 + 3)/2.

= (2,  6) Answer.

5 0
3 years ago
I need help this is dude tomorrow
olganol [36]

Answer:

Negative

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the difference between consecutive numbers and consecutive odd numbers?
kirill [66]
Yes that’s right have a nice day
Good luck!
5 0
3 years ago
A fruit company delivers its fruit in two types of boxes: large and small. A delivery of 5 large boxes and 2 small boxes has a t
nikdorinn [45]

Each large box weighs 15 kilograms and each small box weighs 13.5 kilograms.

Step-by-step explanation:

Let,

Weight of large box = x

Weight of small box = y

According to given statement;

5x+2y=102      Eqn 1

3x+8y=153      Eqn 2

Multiyplying Eqn 1 by 4

4(5x+2y=102)\\20x+8y=408\ \ \ Eqn\ 3

Subtracting Eqn 2 from Eqn 3

(20x+8y)-(3x+8y)=408-153\\20x+8y-3x-8y=255\\17x=255

Dividing both sides by 17

\frac{17x}{17}=\frac{255}{17}\\x=15

Putting x=15 in Eqn 2

15(3)+8y=153\\45+8y=153\\8y=153-45\\8y=108

Dividing both sides by 8

\frac{8y}{8}=\frac{108}{8}\\y=13.5

Each large box weighs 15 kilograms and each small box weighs 13.5 kilograms.

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/10541435
  • brainly.com/question/10666510

#LearnwithBrainly

4 0
4 years ago
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