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defon
3 years ago
6

rectangle abcd is similar to rectangle pqrs. given ab=14 cm, BC=8cm and pq=21cm, calculate the length of QR

Mathematics
1 answer:
weqwewe [10]3 years ago
6 0
QR =12 because you set up a proportion 21/14=x/8 then cross multiply and get 14x=168 then you divide and get 12
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the largest of these five squares has side length 27 units, and each additional square's side length is 2/3 as large as the one
RoseWind [281]

The total area is 1289.41 units².

The total perimeter is 281.32 units.

<h3>What is the total area and perimeter?</h3>

The first step is to determine the side lengths of the other squares:

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  • Length of the fourth square = 2/3 x 12 = 8
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Area of a square = length²

Perimeter of a square = 4 x length

  • Area of the first square = 27² = 729
  • Area of the second square = 18² = 324
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Total area = sum of the areas of the 5 squares = 1289.41 units²

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Total perimeter = 281.32 units

To learn how a square, please check: brainly.com/question/9030544

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2 years ago
Part A: What is the ratio of the number of students receiving a C and the number of students receiving an A? * 1:4 6:1 4:1 3:1 P
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Answer:

a. 4 : 1

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c. 3 : 1

Step-by-step explanation:

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= 4 : 1

b. There were 4 students with a D grade and 8 with a B. The ratio is:

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Taken to the lowest form that would be:

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This means that for every student receiving a D, 2 students received an A.

c. 12 students received a C and 4 students received a D. That ratio is therefore:

= 12 : 4

Take to the lowest form by dividing both sides by 4:

= 3 : 1

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