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yKpoI14uk [10]
3 years ago
12

Three times the difference of a number and 9 is -3. Find the number

Mathematics
1 answer:
leva [86]3 years ago
4 0
3(x-9)=-3
3x-27=-3
3x=24
X=8

Check: 3(8-9)=-3

So your number is 8
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Solving quadratic equations by factoring <br> m(m-3)=0
KatRina [158]
Because it has already been factored, we can solve it straight away. Now, since m is a variable, we yield the same result if m = 0 or m = 3 because we have two components to this equation.

We can either have m = 0 or m - 3 = 0
Hence, m is either 0 or 3
6 0
3 years ago
The relationship between the number of games won by a minor league baseball team and the average attendance at their home games
natulia [17]

Answer: There is a strong positive correlation between  number of games won by a minor league baseball team and the average attendance at their home games is analyzed.

Step-by-step explanation:

The Pearson's coefficient 'r' gives the correlation between the predicted values and the observed values .

  • It tells the direction and the strength of the relation.
  • When r is negative it means there is a negative relationship between the variables .
  • When r is positive it means there is a positive relationship between the variables .
  • When |r|=1 , strong correlation ,
  • When r=0 , there is no correlation.
  • If 0.70<|r|<1 , there is a strong correlation.
  • If 0.50<|r|<0.70 , there is a moderate correlation.
  • If 0.30<|r|<0.50 , there is a low correlation.

Given :  A regression to predict the average attendance from the number of games won has an r = 0.73.

Since r=0.73 is positive and 0.70 <0.73 <1 , it means there is a strong positive correlation between number of games won by a minor league baseball team and the average attendance at their home games is analyzed.

4 0
3 years ago
For a quantitative variable in a particular population, how many different sample means are there?.
gladu [14]

A quantitative variable is a variable that can be measured i.e. quantified

There can be many sample means as possible

<h3>How to determine the number of samples</h3>

From the question, we understand that the variable is a quantitative variable

This means that the variable can be measured.

When a variable can be measured, there can be many sample means

Hence, the number of sample means is many

Read more about sample means at:

brainly.com/question/7301139

4 0
3 years ago
Charlie made the following table to record the height of each person in his family.
IRISSAK [1]

Answer:

4

Step-by-step explanation:

Since the question does not specify if you are rounding up or down, just round down to four from 4 1/6. 4 1/6 is closer to 4 than it is to 4 3/6 or 4 1/2.

3 0
2 years ago
Read 2 more answers
A large grandfather clock strikes its bell once at 1:00, twice at 2:00, three times at 3:00, etcetera. what is the total number
erastovalidia [21]
There is a formula for adding consecutive integers.
sum = (n * (n+1)) / 2
for summing 1 through 12 it is
sum = (12 * 13) / 2 = 156/2 = 78
The clock goes through two "12-hour cycles" in a day, so the answer is 2 * 78 or 156 times.


8 0
3 years ago
Read 2 more answers
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