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matrenka [14]
3 years ago
5

What are sets and how can they be represented ?

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
7 0
A set is usually denoted by a capital letter, such as A, B, or C. A set may be described by listing all of its elements enclosed in braces.

For example, if Set A consists of the numbers 2, 4, 6, and 8, we may say: A = {2, 4, 6, 8}.
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3 1/4 - 1 3/5 | please help !!
Luba_88 [7]

Answer:

Step-by-step explanation:

Step: 1: Convert mixed fraction to improepr fraction.

Step: 2 : Find the LCM of 4 , 5 = 20

Step 3: Find equivalent fractions with denominator as 20

Step 4: Now subtract.

3\dfrac{1}{4}-1\dfrac{3}{5}=\dfrac{13}{4}-\dfrac{8}{5}

             \sf = \dfrac{13*5}{4*5}-\dfrac{8*4}{5*4}\\\\\\     = \dfrac{65}{20}-\dfrac{32}{20}\\\\\\    = \dfrac{65-32}{20}\\\\\\    = \dfrac{33}{20}\\\\  \\    = 1 \dfrac{13}{20}

6 0
2 years ago
Which best explains whether or not triangles RST and ACB are congruent?
irga5000 [103]
Two triangles are congruent if and only if their corresponding parts are congruent (CPCTC).
7 0
3 years ago
The diameter of a circle 8 centimeters. What is the circles area?use 3.14 for n
DIA [1.3K]

Answer:

50.24 cm^2

Step-by-step explanation:

Area = Pi r^2

A = (3.14) (4^2)

A = 50.24 cm^2

3 0
3 years ago
You started saving for a car when you were in middle school. You have done some research and discovered that it will cost you ab
Likurg_2 [28]

Answer: $2,833.47

Step-by-step explanation:

Part 1:

n = [lnA - lnP] / ln(1 + i)

n = [ln15000 - ln10000] / ln(1 + 0.03)

n = [9.6158 - 9.2103] / 0.0296

n = 13.70

13 years, 8 months, and 12 Days

Part 2:

P = A / [(1 + i)n]

P = 15000 / [(1.03)4]

P = 15000 / 1.1255

P = $13,327.31

Part 3:

A = 10000 (1 + 0.04)5

A = $12,166.53

The amount of money you need to save to buy a car at $15,000 would be;

$15,000 - $12,166.53

=> $2,833.47

6 0
3 years ago
25 POINTS!! NEED HELP ASAP THANKSSSS Naomi had B bushels of grain. After Ruth brought her 5 more bushels of grain, she had 11 bu
Snezhnost [94]

b+5=11

this is the answer because she has b bushels and Ruth brought her 5 bushels. you can represent this by this: b+5

then it says in all, she has 11 bushels. So, b+5=11

hope this helps!

7 0
3 years ago
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