Answer: A. Infinite number of solutions
Step-by-step explanation:
The given system of equations is expressed as
x + 3y = 5- - - - - - - - - - - - - -1
4x + 12y = 20- - - - - - - - - - - 2
We would apply the method of substitution. From equation 1, we would make x the subject by subtracting 3y from the left hand side and the right hand side of the equation. It becomes
x + 3y - 3y = 5 - 3y
x = 5 - 3y
Substituting x = 5 - 3y into equation 2, it becomes
4(5 - 3y) + 12y = 20
20 - 12y + 12y = 20
20 = 20
Therefore, the system of equations has an infinite number of solutions because as many values of x and y that satisfy the first equation, they would also satisfy the second equation.
Answer:
Step-by-step explanation: I will help you with some of them. For the first one the diameter is 18 because diameter is 2x radius. For number 3. The radius is 2. For number 6. The radius is 13. For number 7. The radius is 17. And for number 9. Diameter is 30
Answer:
hi i need help on sumthing
Step-by-step explanation:
Absolute value is always positive so I would say the answer would be A.