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Yanka [14]
2 years ago
10

How do you write 42% , 72% , 88% , and 35% as a fraction in simplest form.

Mathematics
2 answers:
zalisa [80]2 years ago
8 0
All number in percentage form when converted into a fraction will serve as the numerator with 100 as the denominator. The percent sign will be removed and the fraction will be simplified.

42% = 42/100 = (42÷2) / (100÷2) = 21/50 
72% = 72/100 = (72÷2) / (100÷2) = 36/50 = (36÷2) / (50÷2) = 18/25
88% = 88/100 = (88÷2) / (100÷2) = 44/50 = (44÷2) / (50÷2) = 22/25
35% = 35/100 = (35÷5) / (100÷5) = 7/20

Notice that both numerator and denominator must be factored by the same number to be simplified.

Fed [463]2 years ago
4 0
Put each one over 100. So 42/100, then reduce down by dividing by 2 both the top and bottom figures and you get 21/50 for your first answer. Do the same with each of the rest...72/100 and reduce down to 36/50, then reduce again 18/25 and that is the farthest you can reduce on that one. Do the same for the rest.
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erastovalidia [21]
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Maru [420]

Answer:

Perimeter = 18.7 units

Area = 13.5 units²

Step-by-step explanation:

Perimeter of ADEC = AD + DE + EC + AC

Length of AD = 3 units

By applying Pythagoras theorem in ΔDBE,

DE² = DB² + BE²

DE² = 3² + 3²

DE = √18

DE = 4.24 units

Length of EC = 3 units

By applying Pythagoras theorem in ΔABC,

AC² = AB² + BC²

AC² = 6² + 6²

AC = √72

AC = 8.49 units

Perimeter of ADEC = 3 + 4.24 + 3 + 8.49

                                 = 18.73 units

                                 ≈ 18.7 units

Area of ADEC = Area of ΔABC - Area of ΔBDE

Area of ΔABC = \frac{1}{2}(AB)(BC)

                       = \frac{1}{2}(6)(6)

                       = 18 units²

Area of ΔBDE = \frac{1}{2}(BD)(BE)

                       = \frac{1}{2}(3)(3)

                       = 4.5 units²

Area of ADEC = 18 - 4.5

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6 0
3 years ago
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bezimeni [28]
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let w = width let w + 8 = length and the area would be w(w + 8) = w² + 8w

No for the second rectangle:
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Area = length x width or (w + 4)(w + 3) = w² + 3w + 4w + 12 using the foil method to multiply to binomials. Simplified Area = w² + 7w + 12

Now our problem says that the two area will be equal to each other, which sets up the following equation:

w² + 8w = w² + 7w + 12 subtract w² from both sides
8w = 7w + 12 subtract 7w from both sides
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7 0
3 years ago
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mr Goodwill [35]

Answer:

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