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Tju [1.3M]
2 years ago
9

7. how many tiles measuring

Mathematics
1 answer:
Margaret [11]2 years ago
5 0

Answer:

245 tiles

Step-by-step explanation:

1 meter = 100 cm

Area of bathroom = 3.5m x 2.8m = 350x280 = 9800 cm²

Area of each tile = 20cm x 20cm = 400 cm²

Total number of tiles required = 9800/400 = 245

<u>Note</u>

Strictly speaking we have to find out how many tiles can be fitted in the length and breadth of the bathroom. Since the bathroom is 350 cm wide, we can fit 350/20cm = 17.5 tiles. However, there is no concept of 1/2 tile so the question has an ambiguity. along the width, we can fit 280/10 = 14 tiles

17.5 x 14 = 245 but if the question is reworded to how many tiles do we need to purchase to floor the bathroom it would be 18 x 14 = 252

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40,0000000000000000000

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Nayeli goes out to lunch. The bill, before tax and tip, was $18.40. A sales tax of 9% was added on. Nayeli tipped 12% on the amo
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How many combinations are there when drawing three cards from a standard deck?
Alexandra [31]
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In short, how many combinations there are in choosing 3 cards among 52 ?

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3 years ago
9. What is the range of the relation [(4, 2), (1, 1), (0, 0). (1.-1). (4, -2) ?​
nasty-shy [4]

Answer:

{-2,-1,0,1,2}

Step-by-step explanation:

When we are talking of the range, we are referring to the possible y-values the relation can take

Hence, a set of y-values will represent the range of the relation

we have this as:

{2, 1 , 0, -1 , -2}

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{-2,-1,0,1,2}

8 0
3 years ago
B) Then solve for x given that the area of the shaded region is 48 square units. Show all your work
nasty-shy [4]

Answer:

10

Step-by-step explanation:

Here it's given that the area of the shaded region is 48 u² and we need to find out the value of x .

The given figure is made up of two rectangles where the smaller one is inscribed into the bigger one .

  • The area of shaded region will be equal to the difference of the areas of the two rectangles , that is equal to 48 u² .
  • The area of rectangle is length × breadth .
  • The dimensions of bigger rectangle is (x+3)(x-4) and that of smaller one is 3 × x .

So that ,

\longrightarrow ar(bigger) - ar(smaller) = 48

\longrightarrow [ (x+3) (x-4)] - 3(x) = 48

\longrightarrow [ x² - 4x +3x -12 - 3x ] = 48

\longrightarrow x² -4x -12 -48 = 0

\longrightarrow x² - 4x - 60 = 0

\longrightarrow x² - 10x + 4x - 60 = 0

\longrightarrow x( x -10) +4(x -10) = 0

\longrightarrow (x +4)(x-10) = 0

\longrightarrow x = -4,10

  • Since sides can't be negative ,

\longrightarrow x = 10

<h3>Hence the required answer is 10.</h3>
8 0
3 years ago
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