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nataly862011 [7]
2 years ago
13

The mean length of 6 childrens' big finger is 12.6cm.

Mathematics
1 answer:
malfutka [58]2 years ago
8 0

14.94 cm ( to 2 dec. places )

We require the sum totals of the 2 groups before calculating the mean of all 14

using mean = \frac{sum}{count}

Children's sum

12.6 = \frac{sum}{6}( cross-multiply )

sum = 6 × 12.6 = 75.6

Adult's sum

16.7 = \frac{sum}{8}( cross- multiply )

sum = 8 × 16.7 = 133.6

Total sum of all 14 = 75.6 + 133.6 = 209.2

mean = \frac{209.2}{14} = 14.94 cm


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Easy 20 points please tell me if I got it right and if not please tell me the right answer
mash [69]

Answer:

No, you are not correct.

It should look like this:

                              Prefer colorful decorations      Prefer neutral decorations

Pay attention                           20                                                  25

to fashion

Do not pay

attention to                              72                                                      33

fashion

Step-by-step explanation:

33 is 22% of 150. In the question it states that 70% of people do not pay attention to fashion. We need to find the other 48% here. In order to do that we multiply .48 by 150. That gets us 72. To check that answer you can add both 72 and 33 and then divide by 150, which gets 70%.

To get the amount of people that prefer neutral decorations and pay attention to fashion we need to add up 20 + 72 + 33 and that equals 125. Next, we take 150 and minus 125 of it to get 25.

<em>Hope this helps!!</em>

<em>- Kay :)</em>

3 0
2 years ago
5(y+2)=4(x-3) Can someone help me find the slope of this line pls
Oxana [17]

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6 0
2 years ago
The price of 1 kg of silver on 1st January 2010 was $607
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FrozenT [24]

Answer:

1. 80 yd

2. 10 and 10 of the other side

3. yes

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1 ft = 1/3 yd

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240 ft =  80 yd

2. one would have to stand in yard 10 and the other in yard 10 but from the other side of the field

50-10 = 40

40 + 40 = 80 yd

3.  

if they are diagonally the distance will be greater than 80, since the yards are parallel, because only the distance would remain only if they are on the same height

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Ben can drive the car for exactly 500 miles
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