1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SpyIntel [72]
3 years ago
6

If you have a number by using multiplication and it gives you 13

Mathematics
2 answers:
Stolb23 [73]3 years ago
3 0
The answer is 7.21...

Degger [83]3 years ago
3 0
The answer is 7.21. hope this helps
You might be interested in
What is the final amount if 700 is decreased by 6% followed by a 7% increase Rounded to 2 decimal places
DaniilM [7]

Answer:

816.67

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Ten boys and twelve girls decide to rent a 16-passenger van and a 6-passenger to drive to a rock concert in a near by city. If t
stira [4]
A) The probability that there are no boys in the car is given by:
P(no\ boys\ in\ car)=\frac{12C6}{22C6}=0.012
5 0
3 years ago
Someone help me plz!!
likoan [24]

Answer: x=15

Step-by-step explanation:

Since these are supplementary angles, we know that if we add them together we would get 180 deg. so....

(7x-10)+ (6x-5)=180

Kay so now we can combine like terms.

13x-15=180

Now we can add 15 to both sides.

13x=195

Finally Divide 13 on both sides.

X would then now equal 15.

6 0
2 years ago
The least-squares regression model y =−3.4+5.2x and correlation coefficient r=−0.66 were calculated for a set of bivariate data
Makovka662 [10]

Answer:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

For this case the value of r = -0.66

Now we can calculate the determination coeffcient:

r^2 = (-0.66)^2 = 0.4356

And then we can conclude that 43.56% of the variation in y can be explained by the explanatory variable

And then 100-43.56 = 56.44 % of the variation in y that cannot be explained by the explanatory variable

Step-by-step explanation:

For this case we need to calculate the slope with the following formula:

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

\bar x= \frac{\sum x_i}{n}

\bar y= \frac{\sum y_i}{n}

And we can find the intercept using this:

b=\bar y -m \bar x

And the model obtained for this case is:

y = -3.4 +5.2 x

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:  

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

For this case the value of r = -0.66

Now we can calculate the determination coeffcient:

r^2 = (-0.66)^2 = 0.4356

And then we can conclude that 43.56% of the variation in y can be explained by the explanatory variable

And then 100-43.56 = 56.44 % of the variation in y that cannot be explained by the explanatory variable

8 0
3 years ago
What is the name of the red dot located on the curve of the parabola below?
katovenus [111]

C. Vertex (x,y). The vertex is right in the middle of the quadratic graph.

8 0
1 year ago
Other questions:
  • Algebra 1 question need help !
    6·2 answers
  • Please explain if you can how to do it or show your steps
    15·1 answer
  • What is m<br> Enter your answer in the box.
    14·1 answer
  • Write an algebraic expression for a C -5
    15·1 answer
  • What is the solution to the equation 6x+2=9x-1
    8·1 answer
  • Which expression is equivalent to (7x^2-4)(5x+7)
    7·2 answers
  • Evan’s family drove to a theme park for vacation. They drove the same speed throughout the trip. The first day, they drove 300 m
    7·1 answer
  • HELP PLZ!!! this is a very difficult question
    7·1 answer
  • What is 12÷2/5? Ty to everyone helping
    10·1 answer
  • You have 30 quarters. You find ​20% more quarters in your room. Then you go shopping and spend ​75% of the total number of quart
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!