<span><span><span>1. a = b means a is equal to b.
2. a ≠ b means a does not equal b.Operations1. Addition: If a = b then a + c = b + c.</span></span><span><span>2. Subtraction: If <span>a = </span>b then a – c = b– c.
3. Multiplication: If a = b then ac = bc.
<span>4. Division: If a = b and <span>c ≠ </span>0 then a/c = b/c.</span></span></span></span>
Okay, so your scale rectangle has a length of l = 8.2 cm. The actual triangle has a length of L = 41 cm. What is the scale factor? You find out by dividing the scale rectangle l from the actual rectangle L.
41 cm / 8.2 cm = 5
The scale factor is 5. That means the actual rectangle is exactly 5 times bigger than the scale rectangle. Now finding the width is easy! If the width of the scale rectangle is 2.1 cm and the scale factor is 5, you just multiply them together!
2.1 cmx 5 = 10.5 cm
The width of the actual rectangle is 10.5 cm! Hope that helps!
<u>Answer: </u>
<em>If set A = (3, 4, 7, 9) and if set D = (9, 4, 3, 7) , then </em><em>set A = set D</em><em> is </em><em>true</em><em>.</em>
<u>Solution: </u>
Two sets are said to be equal, if the elements in both the sets are exactly same.
From question, the given sets are
Set A = (3, 4, 7, 9)
Set D = (9, 4, 3, 7)
Set A and Set D contain same elements. In sets and relations, we need not worry about the elements positions. For the given set A the elements are {3,4,7,9} and for set D the elements are {9,4,3,7}. The elements are same each other irrespective of their positions. Hence, the given condition set A= set D is True.
