9514 1404 393
Answer:
c = 81
Step-by-step explanation:
The equation x² -c = 0 can be factored as ...
(x -√c)(x +√c) = 0
which has roots ±√c.
The roots are given as ±9, so we have ...
±9 = ±√c
c = (±9)² = 81
The value c = 81 makes the equation have ±9 as solutions.
Answer:
11 and 18
Step-by-step explanation:
if the smaller number is a
the larger number is a+7
their sum a + (a+7) = 29
2a + 7 = 29
2a = 29-7
2a = 22
a = 22/2
a = 11
the smaller number is 11
the larger number is 11 + 7 = 18
6x + 15 = 6 (x + 3)
6x + 15 = 6x + 18
6x = 6x + 3
0 = 3
So, there are no solutions to this equation.
Answer:
The median is the number in the middle. Line all the numbers up from least to greatest and find the one that's in the middle.
32 38 45 46 46 47 50 54 63
Since there are 9 numbers, then the 5th number is in the middle.
Therefore, 46 is the median.
Step-by-step explanation:
