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Afina-wow [57]
4 years ago
11

Hi i kinda stuck on this question. Help please. Workings Please​

Mathematics
1 answer:
egoroff_w [7]4 years ago
3 0

Answer:

D. 4m^{2}

Step-by-step explanation:

First find the area of 1 tile

= length * breadth

= 8 * 5

= 40cm^{2}= 40/10000 = 0.004

no. of tiles= 1000

therefore, total area of 1000 tiles = area of room= 1000*0.004

=4m^{2}

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Answer:

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3 years ago
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Expand the following using the Binomial Theorem and Pascal’s triangle (2x − 3y)^4
krok68 [10]

Answer:

Step-by-step explanation:

Binomial Expansion:

(2x-3y)^4 \\\\= 4C_0(2x)^4 (-3y)^0 + 4C_1(2x)^3 (-3y)^1 + 4C_2(2x)^2(-3y)^2 \\\\+ 4C_3(2x)^1 (-3y)^3 + 4C_4(2x)^0 (-3y)^4\\\\=16x^4 + 4(8x^3)(-3y) + 6(4x^2)(9y^2) + 4(2x)(-27y^3) + 81y^4\\\\=16x^4 - 96x^3y + 216x^2y^2-216xy^3 +81y^4

Pascal's Triangle:

  Zero row                        1

 First row                  1                 1

 Second row          1           2             1

 Third  row         1         3              3          1

 Fourth row    1       4            6           4          1

8 0
3 years ago
rosa made a Mosaic while using 42 black tiles 35 blue tiles and 23 red tiles write a percent to represent the number of red tile
Vlada [557]
23% because (42+35)+23=100. 42+35=77. 100-77=23.
4 0
3 years ago
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horsena [70]

Answer:

178 chairs

Step-by-step explanation:

(something) rows of (something) columns always means to multiply. So, let's multiply 8 x 23:

8 × 23 = 184

Now, since the workers removed 6 of the chairs, there are 6 less chairs in the theater. Let's subtract 6 from 184 to get our final answer:

184 - 6 = 178

Hope this was helpful! Let me know if you have any other questions abou this problem. :)

5 0
3 years ago
A sugar cookie recipe that makes 2 dozen cookies calls for 3 tablespoons of half-and-half. How much half-and-half would you need
Mariana [72]

Answer:

If 3Tbs = 2 dozen cookies (24) u would need 1.5 more Tbs to make 3 dozen cookies

To get Tbs u would take 3+1.5=4.5 Tbs

4 0
4 years ago
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