Answer:
B: 4 solutions
Step-by-step explanation:
Combining the two equations results in 2x² = 52, or x² = 26.
This equation has two solutions: x = ±√26.
As before, x² = 26. If we substitute 26 for x² in the 1st equation, we get:
26 - 4y² = 16, or 4y² = 10, or y = ±√5/2. Again: two solutions.
If we take x to be +√26, y could be ±√(5/2).
Check: is ( √26, √(5/2) ) a solution of the system?
Subbing these values into the first equation, we get:
26 - 4(5/2) = 16. Is this true?
Then 10 = 10. Yes.
Through three more checks, we find that this system has FOUR solutions.
4(9+7) = 36+28 = 64
open the parentheses, then simplify.
Given:
The equation is
To find:
The value of x.
Solution:
We have,
Isolating the variable, we get
Therefore, the value of x is 44.2.
53 is the mean
70 is the range
there is no mode
51 is the median
Answer:
true, false, and false
Step-by-step explanation:
