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Annette [7]
2 years ago
10

1. A rectangle has a length of 5cm and a height of 4cm.

Mathematics
2 answers:
Gennadij [26K]2 years ago
5 0

Answer:

a

20cm squared

b

18cm

c

5cm

d

80cm

Step-by-step explanation:

a

Area is height multiplied by length in a regular quadrilateral

b

Perimeter is calculated by adding all the sides together

c

0.5 is effectively halving, so instead of 4 multiplied by 5 it is 2 multiplied by 2.5

d

2 is effectively doubling, so instead of 4 multiplied by 5 it is 8 multiplied by 10

dsp732 years ago
3 0

Answer:

  1. <u>20 cm²</u>
  2. <u>18 cm</u>
  3. <u>5 cm²</u>
  4. <u>80 cm²</u>

Step-by-step explanation:

<u>Q1(a)</u>

  • Area = length x height
  • Area = 5 x 4
  • Area = <u>20 cm²</u>

<u>Q1(b)</u>

  • Perimeter = 2(length + height)
  • Perimeter = 2(5 + 4) = 2(9)
  • Perimeter = <u>18 cm</u>

<u>Q1(c)</u>

  • New dimensions are : 5/2 = <u>2.5</u> and 4/2 = <u>2</u>
  • New Area = 2.5 x 2
  • New Area = <u>5 cm²</u>

<u>Q1(d)</u>

  • New dimensions are : 2 x 5 = <u>10</u> and 2 x 4 =  <u>8</u>
  • New Area = 10 x 8
  • New Area = <u>80 cm²</u>
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<u>Answer</u>

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<u>Solution</u>

furniture store sells two types of dining room tables.  

The first, type A, costs $210 and you make a $21 profit on each one.  

The second, type B, costs $180 and you make a $20 profit on each one.  

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Let x be the number table  Type A sold, type B sold = 130-x

To find the value of x

21x +(130-x)20=2640

solving we get x=40

There are two possibilities

1)

A type sold =40 B type sold = 130 - 40 =90

total cost = 40 x 210 +  90 x 180 = 24600

2)

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total cost = (90 x 210) + (40x180)=26100

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sell A type 40 numbers and B type 90 numbers

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4 years ago
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ludmilkaskok [199]
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3 years ago
The legs of a right triangle are 10 centimeters and 24 centimeters long. What is the length of the hypotenuse?
Rina8888 [55]
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3 years ago
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\left[\begin{array}{ccc}\boxed{\boxed{(2.5+5) \\ \\ (2.5*2.5) \\ (2.5-2) \\ (2.5-1) \\}} \\ \\ this \ would \ be \ why \ I \ would \ say \\ that \ this \ would \ be \ the \ answer \end{array}\right]

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4 years ago
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elena-s [515]

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