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Lubov Fominskaja [6]
3 years ago
6

find the variance and standard deviation of the given set of data to the nearest tenth. 440,130,280,500,150,640,760

Mathematics
1 answer:
Westkost [7]3 years ago
8 0

Answer:

The variance is 49595.9

The standard deviation is 222.7

Step-by-step explanation:

The step -by -step explanation is shown in the picture above.

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In Amy’s backyard, there are also chickens and rabbits. There are 5 more chickens than rabbits. The total number of legs is 130.
Butoxors [25]

Answer:

There are 25 chickens and 20 rabbits

Step-by-step explanation:

Let

x-----> the number of chickens

y ----> the number of rabbits

Remember that

1 chicken has two legs

1 rabbit has four legs

so

2x+4y=130 -------> equation A

x=y+5 -----> equation B

Substitute equation B in equation A and solve for y

2(y+5)+4y=130

2y+10+4y=130

6y=120

y=20 rabbits

Find the value of x

x=y+5

x=20+5=25 chickens

3 0
3 years ago
First try was incorrect
nataly862011 [7]

Answer:

So if he needs 1.5 of the lemonade mix, to find how much you need, simplu divide.

Step-by-step explanation:

4.5/1.5=3

He can make 3.

8 0
2 years ago
Read 2 more answers
20 points...<br><br> Sherlock - please help!
antiseptic1488 [7]

Answer:

C) \{\frac{1+\sqrt{5}}{3},\:\frac{1-\sqrt{5}}{3}\}

Step-by-step explanation:

(3x-1)^2=5\\\\3x-1=\pm\sqrt{5}\\\\3x=1\pm\sqrt{5}\\\\x=\frac{1\pm\sqrt{5}}{3}\\ \\\{\frac{1+\sqrt{5}}{3},\:\frac{1-\sqrt{5}}{3}\}

3 0
2 years ago
Please help i wanna make my parents proud !!!!!!
algol13
Why is school so hard
7 0
3 years ago
Pls answer quickly as possible
Paraphin [41]

Your answer will be X = 11 over 2, if that's a 2 over 5 in the beginning of the problem

6 0
2 years ago
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