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taurus [48]
2 years ago
8

(3-√5)(3-√5) Please Include Steps

Mathematics
1 answer:
wariber [46]2 years ago
4 0

\left( 3 - \sqrt 5 \right) \left( 3 - \sqrt 5 \right) \\\\=\left( 3 - \sqrt 5 \right) ^2\\\\=3^2 - 2 \cdot 3 \cdot \sqrt 5 + \left( \sqrt 5 \right)^2\\\\=9-6\sqrt5 +5\\\\=14-6\sqrt 5\\\\=2(\left7-3\sqrt 5 \right)

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A sample of college students was asked how they felt about their weight. Of the 143 women in the sample who responded, 38 women
Monica [59]

Answer:

a.  Feelings about weight is the response (dependent) variable.  Sex is the explanatory (independent) variable.  The feelings about weight depend on the sex

b. Summary of  observed counts

                         Women   Men   Total

Overweight        38           18       56

Right weight      99          35      134

Underweight       6          25        31

Number           143           78      221

c. Percentage of the 143 women responding in each category:

1. Overweight = 38/143 = 26.6%

2. Right weight = 99/143 = 69.2%

3. Underweight = 6/143 = 4.2%

d. Percentage of the 78 men responding in each category:

1. Overweight = 18/78 = 23.1%

2. Right weight = 35/78 = 44.9%

3. Underweight = 25/78 = 32%

e. Summary of feelings about weight:

                         Women        Men

Overweight        26.6%        23.1%

Right weight      69.2%        44.9%

Underweight       4.2%         32%

Step-by-step explanation:

a) Data:

Sample size = 221

                       Women    Men   Total

Overweight        38           18       56

Right weight      99          35      134

Underweight       6          25        31

Number            143           78      221

b) To obtain the percentage of feelings about weight for each category, the number of those who feel overweight, right weight, or underweight is divided by the total number of women or men.  The value obtained, which is in decimal form, is then converted to percentage by multiplying with 100.

7 0
3 years ago
Which numbers can be expressed as consecutive positive integers?
Sergio [31]

Answer:

Step-by-step explanation: Fourteen can be expressed as 2 + 3 + 4 + 5, also a sum of consecutive positive integers. Some numbers can be expressed as a sum of consecutive positive integers in more than one way. For example, 25 is 12 + 13 and is also 3 + 4 + 5 + 6 + 7.

5 0
3 years ago
A student attempted to generate an equivalent expression using the distributive property, as shown below:
Schach [20]
It is 6 was not multiplied by 3
The answer should be 6(m+3)= 6m+ 18
5 0
4 years ago
Read 2 more answers
Is (5, 4) a solution to this system of equations?<br> 2x + 3y = 23 <br> y + x = 9
lions [1.4K]
No because it works for y + x= 9 but not the first one
6 0
3 years ago
can someone please help me with this one? I’ve been stuck on it for ages! Tysm if you do!! I appreciate it!
Charra [1.4K]

Answer:

50

110

90

=250

Step-by-step explanation: 90+50+110

I HOPE THIS HELPS

4 0
2 years ago
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