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barxatty [35]
4 years ago
5

1. Increase £92 by 40%

Mathematics
1 answer:
yanalaym [24]4 years ago
5 0

Answer:

1. Increase £92 by 40% = £128.8

2. Increase £150 by 13% = £169.5

3. Decrease £75 by 80% = £15

4. Decrease £440 by 18% = £360.8

Step-by-step explanation:

1. Increase £92 by 40%

40/100 + 92

0.4X92

36.8

92+36.8

£128.8

2. Increase £150 by 13%

13/100 X 150

0.13X150

19.5

150+19.5

£169.5

3. Decrease £75 by 80%

80/100 X 75

0.8X75

60

75-60

£15

4. Decrease £440 by 18%

18/100 X 440

0.18X440

79.2

440-79.2

£360.8

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Zielflug [23.3K]

Answer:

x = -0.62 and x = 4.29

These values are approximations !

Step-by-step explanation:

You can not use Factoring to solve this equation. Perhaps you did not use the exact notation as in the original question?

Anyway, to solve it, you can still use the ABC formula.

3x²-11x-6=0

a = 3

b =-11

c = -6

x = [11 + √{121 -4(3 *-6)} ]/ 2*3

x = [11 + √{121 -4(-24)} ]/ 6

x = [11 + √{121 + 96} ]/ 6

x = [11 + √{217} ]/ 6

x = 4.29 This is an approximation !

x = [11 - √{121 -4(3 *-6)} ]/ 2*3

x = [11 - √{121 -4(-24)} ]/ 6

x = [11 - √{121 + 96} ]/ 6

x = [11 - √{217} ]/ 6

x = -0.62 This is an approximation !

extra: see the graph.

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3 years ago
Calling all mathemeticians
MAVERICK [17]
Wouldn’t be a,or d. I would honestly say B..
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Answer:

X = -12.54 (I am a Math Class Topper in both 6th Grade an 7th Grade)

Step-by-step explanation:

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----------------------------------

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-1.35         -1.35

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X = -12.54

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