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2 years ago

15

The floor of a restaurant is a square of sides 28 cm. The floor covered with square tiles of sides 40 cm. Calculate the total nu

mber of tiled used.

1 answer:

andrew11 [14]2 years ago

5 0

Answer:

I'm going to calculate with sides 28 m

4,900 tiles used

Step-by-step explanation:

Area restaurant 28x28 = 784 m squared

each tile 40 cm = 0.4m

area of tile 0.4x0.4 =0.16

784/0.16 = 4,900

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What is the value of the product (3 – 2i)(3 + 2i)? 5 9 + 4i 9 – 4i 13

Assoli18 [71]

Answer:

13

Step-by-step explanation:

(3-2i)(3+2i)

as (a+b)(a-b) =a²-b²

3²-(2i)²

=9-(4*-1)

=9-(-4)

=9+4

=13

Hope this helps you!

8 0

2 years ago

Read 2 more answers

Find the perimeter of a regular heptagon with consecutive vertices at "A" (-2,-5) and "B" (1,-9)

weqwewe [10]

Answer:

Perimeter is 35 units.

Step-by-step explanation:

A heptagon has 7 equal sides.

Given the length of two consecutive vertices, A(-2-5) and B(1,-9).

We can find the length of AB and multiply by 7.

Recall the distance formula;

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

The length of AB is

$|AB|=\sqrt{(-2-1)^2+(-5--9)^2}$

$|AB|=\sqrt{(-3)^2+(4)^2}$

$\Rightarrow |AB|=\sqrt{9+16}$

$\Rightarrow |AB|=\sqrt{25}$

$\Rightarrow |AB|=5\:units$

Therefore the perimeter is $7\times 5=35\:units$ .

7 0

3 years ago

What is the area of the triangle shown

Sati [7]

Answer:

The answer is 40 sq. units

That is: 1/2×b×h (formula for area of triangle)

1/2×10×8

= 40

7 0

2 years ago

A landscaper is planting a row of 10 shrubs along the walkway shown below. There must be one shrub at the very beginning and one

rewona [7]

Answer:

$9d = 36$

Step-by-step explanation:

See attachment for complete question

$Length = 36ft$

$n = 10$

From the question, we understand that one shrub must be at both ends.

Taking the first as a point of reference, we're left with:

$(n - 1) * distance = 36$

Substitute 10 for n and d for distance

$(10 - 1) * d = 36$

$9 * d = 36$

$9d = 36$

Hence:

$9d = 36$ answers the question

4 0

3 years ago

SOMEONE PLEASE HELPPP PLEASE ASPAAP

Feliz [49]

<h3>Answer: 35</h3>

==========================================================

Explanation:

Check out the diagram below.

U is between T and V, and U is on segment TV. We can see that the smaller pieces TU and UV add back up to the largest segment TV

TU + UV = TV

17 + 18 = TV

35 = TV

TV = 35

Segment TV is 35 units long.

5 0

2 years ago