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Zarrin [17]
2 years ago
10

Do the following lengths form a right triangle?​

Mathematics
1 answer:
Dmitry_Shevchenko [17]2 years ago
5 0

Answer:

yes, this forms a right angle

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Can you guys solve this for me please
djyliett [7]

Answer:

50°

Step-by-step explanation:

all triangles = 180°

add 53 + 77 = 130

subtract 180 - 130 = 50

giving you your answer of 50°

5 0
2 years ago
Read 2 more answers
The diagram shows the cross-section of a wall of a cinema.
Anna71 [15]

Answer:

  • 280 m²
  • £133

Step-by-step explanation:

The area of the wall is the sum of the areas of the different sections of the wall. The cost to paint it will be the product of the cost of a tin of paint and the number of tins required.

__

Here, the shape of the wall can be divided into two trapezoids and a rectangle. Each shape has a corresponding area formula. Left-to-right, their areas are ...

<u>Left Trapezoid</u>

  A = 1/2(b1 +b2)h

  A = 1/2(10 m +11 m)(4 m) = 42 m²

<u>Middle Rectangle</u>

  A = LW

  A = (13 m)(11 m) = 143 m²

<u>Right Trapezoid</u>

  A = 1/2(b1 +b2)h

  A = 1/2(11 m +8 m)(10 m) = 95 m²

<u>Wall Area</u>

The total area to be painted is the sum of the above areas:

  total area = 42 m² +143 m² +95 m² = 280 m²

The area that needs to be painted is 280 m².

__

A tin of paint covers 15 m², so the number of tins needed is ...

  (15 m²)t = 280 m²

  t = 280/15 = 18 2/3 . . . . . . divide by the coefficient of t

We can only buy whole tins, so we need to buy 19 tins. Their cost will be ...

  (£7 /tin)(19 tins) = £133

It will cost £133 to paint the wall.

7 0
2 years ago
Walks for 17.5 meters at a speed of 7 meters per minute. For how many minutes does it walk?
Alekssandra [29.7K]
Speed = distance / time

7 = 17.5 / t
t = 17.5 / 7
  =    2.5 minutes
5 0
3 years ago
Rewrite the question in slope-intercept form:<br> 2x-4y-12= -13-2x
madreJ [45]

Answer:

y= x + 1/4

Step-by-step explanation:

did the math and that should be your answer

3 0
3 years ago
Antonio rented a bike from Alberto's Bikes. It cost $11 plus $4 per hour. If Antonio paid
Nina [5.8K]

Answer:

5 hours

Step-by-step explanation:

31-11 = 20

20/4 = 5

6 0
2 years ago
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