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My name is Ann [436]
2 years ago
12

Multiply and simplify √27 x √12 x √9

Mathematics
2 answers:
Katarina [22]2 years ago
8 0

√27 x √12 x √9

= √2916

=54

Cerrena [4.2K]2 years ago
6 0

Answer: 54

Steps:  √27 × √12 × √9

√9 = 3

√27 × √12 × 3

√27 × √12 = √324

√324 × 3

Factor  the number:  √324 = 18²

18² × 3

Apply the radical rule (a² = a):   18 × 3

Multiply the numbers:  18 × 3 = 54

Plz mark brainliest:)

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11Alexandr11 [23.1K]

Answer:

Area of shaded rectangle = 42 cm²

55%

Step-by-step explanation:

The length of the shaded area is equal to the length of the white rectangle.

Therefore, length of shaded rectangle = 7 cm

The width of the shaded rectangle is equal to the length of the white rectangle <u>minus</u> two widths of the white rectangle.

Therefore, width = 7 - (2 x 0.5) = 6 cm

Area of shaded rectangle = width x length

                                          = 6 x 7

                                          = 42 cm²

----------------------------------------------------------------------------------------------

Perimeter of a square = 4 × side length

If the perimeter of the square is 40 cm,
then the side length = 40 ÷ 4 = 10 cm

Area of a square = side length x side length

⇒ area of this square = 10 x 10 = 100 cm²

To determine the shaded area, calculate the areas of the 2 white triangles and subtract these from the area of the square.

Area of a triangle = 1/2 x base x height

⇒ area of left triangle = 1/2 x (10 - 7) x 10 = 15 cm²

⇒ area of right triangle = 1/2 x 10 x (10 - 4) = 30 cm²

Therefore, shaded area = 100 - 15 - 30 = 55 cm²

To calculate the percentage, divide the shaded area by the area of the square and multiply by 100:

(55 ÷ 100) × 100% = 55%

7 0
2 years ago
Please Answer This, the question is on the picture. it needs to be a fraction
marshall27 [118]

Answer:

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Step-by-step explanation:

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3 0
3 years ago
Ruth has 12 feet of ribbon. She uses 7 feet of it for a craft project and gives 28 inches of it to her sister. How many inches o
Margaret [11]

Answer:

32 Ribbon's left

Step-by-step explanation:

5 0
3 years ago
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