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attashe74 [19]
3 years ago
6

Factor completely 3x2 -21

Mathematics
1 answer:
Andrej [43]3 years ago
7 0

Answer:

=3(x^2 − 7)

Step by Step explanation:

3x^2 − 21

=3(x^2 − 7)

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horsena [70]
I've done this before try using the a squared plus b squared =c squared formula nvm I do t know what I'm talking about
8 0
3 years ago
I'm not sure how to find angle 5 and 6​
Arte-miy333 [17]

Answer:

angle 5 = 17 degrees

angle 6 = 129 degrees

Step-by-step explanation:

Start by finding angle 5 by doing 90+39+x+34=180

You get 17 degrees for angle 5

Then, find angle 6 by doing 17+34+x=180, which is 129 degrees.

6 0
4 years ago
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
What are the slope and the y-intercept of the linear function that is represented by the table? X -3 18 0 12 3 6 6 OThe slope is
sesenic [268]

Answer:

The answer is b

Step-by-step explanation:

5 0
3 years ago
Given ΔABC, AB = BC = AC . Area of ΔABC = 25 sqrt3 /4 cm. Find the perimeter of ΔABC.
zubka84 [21]
This is an equilateral triangle of height a√3/2 where a is the side length. So the area is ½a.a√3/2=a²√3/4.
So a²=25 and a=5cm. Therefore the perimeter is 3a=15cm.
3 0
3 years ago
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