9514 1404 393
Answer:
- A Subtract the bottom equation from the top equation.
- B Add the equations.
Step-by-step explanation:
The x-terms are the same in each equation, so subtracting one equation from the other will eliminate the x-variable.
The y-terms are opposites in the two equations, so adding the two equations will eliminate the y-variable.
Both strategies (subtracting, adding) are applicable to this system of equations.
23 books. Because if you do 3x7+2 it will equal 23.
Answer:
Volume of the cylinder is =
Step-by-step explanation:
Radius of the cylinder= 5 cm
Height of the cylinder= 10 cm
Volume of a cylinder:
As,
Putting the values in the formula:
Volume:
The volume of the cylinder is :
Answer:
It is not ''significant''
Step-by-step explanation:
Let's call the event
A : ''Answer a question correctly if a random guess is made''
Now we calculate the probability for the event A
In the exercise A occurs in only one way and the total cases are the number of possible answers
An event B is ''significant'' if
⇒A it is not a ''significant'' event