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ICE Princess25 [194]
2 years ago
9

one hundred forty countries participated in the 1984 summer olympics in los angeles. this was 75% more than the number of countr

ies that took part in the summer olympics on Moscow 4 years earlier. how many countries participated in the 1980 olympics in Moscow?
Mathematics
1 answer:
Cloud [144]2 years ago
6 0

Answer:

80 countries participated in the 1980 olympics in Moscow.

Step-by-step explanation:

Hello, I think I can help you with this

You can solve this by using a simple rule of three

Step 1

define

140 countries participated in 1984,this was 75% more than the last time,this means that 140 is the 175% of a value that we need to know

if

140 ⇔175%

x?    ⇔100%

the relation is

\frac{140}{175}=\frac{x}{100}

Step 2

solve for x

\frac{140}{175}=\frac{x}{100}\\x=\frac{100*140}{175}\\x=\frac{14000}{175} \\x=80

80 countries participated in the 1980 olympics in Moscow.

Have a nice day

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The coordinates of each rectangle ABCD are A (0,2) B (2,4) C (3,3) D (1,1). Find the distance of each side of the rectangle then
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AB = CD = √8 ≈ 2.8 units

BC = AD = √2 ≈ 1.4 units

Area of the rectangle ABCD = 3.92 units²

Perimeter of the rectangle ABCD = 8.4 units

<h3>How to Find the Area and Perimeter of a Rectangle?</h3>

Given the coordinates of vertices of rectangle ABCD as:

  • A(0,2)
  • B(2,4)
  • C(3,3)
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To find the area and perimeter, use the distance formula to find the distance between A and B, and B and C.

Using the distance formula, we have the following:

AB = √[(2−0)² + (4−2)²]

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Learn more about the area and perimeter of rectangle on:

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