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Nikolay [14]
3 years ago
10

1/3 (x+2)=-2/5 (x-9) and x=4

Mathematics
1 answer:
MAXImum [283]3 years ago
8 0

Answer:

2 = 2 (Identity)

Step-by-step explanation:

1/3 (x+2)=-2/5 (x-9) and x=4

Follow distributive property

1/3x + 2/3 = -2/5x + 18/5

Replace x for 4

1/3(4) + 2/3 = -2/5(4) + 18/5

4/3 + 2/3 = -8/5 + 18/5

Add like terms

6/3 = 10/5

Simplify

2 = 2

Also known as Identity

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At least two girls means either 2, 3 ... or 8 girls. 
Using the binomial law, we can write the probability in the form:
B(2,0.5)+B(3,05)+...+B(8,0.5)=0.0039(C_8^2+...+C_8^8)
Continue simplifying:
C_8^2+...+C_8^8=2^8-C_8^1=2^8-8=248\\\text{We deduce the probability of the event "at least two girls in birth ":}\\0.0039\times248=0.96\\\text{The above probability (0.96) means that the event is very likely}
6 0
3 years ago
Malik's arts and crafts shop has a bolt of crimson velvet 32 meters long. A customer came in during the morning and bought 120 c
vladimir2022 [97]

Answer:

Amount of crimson velvet left = 3200 -  120 - 1400 = 1680  cm

Step-by-step explanation:

The arts and craft shop has a bolt of crimson velvet of 32 meters long. A customer bought 120 centimetres of the velvet. In the afternoon another customer bought 14 meters. The remaining length of crimson velvet Malik shop possess after the morning and afternoon sales can be calculated below.

The total length of the crimson velvet = 32 meters. Since our answer should be in centimetre we will convert all the units to cm.

total length = 32 m

1 m = 100 cm

32 m = ?

cross multiply

total length in cm = 32 × 100 = 3200 cm

The first customer bought 120 cm

The second customer bought 14 m so let convert again.

1 m = 100 cm

14 m = ?

cross multiply

the second customer length in cm = 14 × 100 = 1400 cm

The amount left in the shop will be as follows

Amount of crimson velvet left = 3200 -  120 - 1400 = 1680  cm

8 0
3 years ago
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9) is 180-(67+28)=85 because a triangle will always equal 180 degrees you take the other two add them together and subtract them from 180.

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7 0
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Substitute x=0
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3 years ago
2(4x + 2) = 4x - 12(x - 1)
lisabon 2012 [21]

Answer:

1/2

Step-by-step explanation:

8x+4=4x-12x+12

8x+4=-8x+12

16x+4=12

16x=8

x=8/16=1/2

5 0
3 years ago
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