This is an arith. sequence, and the common difference is -9.
a(n+1) = a(n)-9, with a(1)=8. Thus, if we look at the first term, we see 8; subracting 9 from 8 produces the second term (-1).
Answer:
The answer is 28.
Step-by-step explanation:
To find the solution, you must multiply the other two numbers together to find the original number that is divided.
-7 * -4 = 28 Answer
28/-7 = -4
Hope this helps!
11. x² - 7x = 0
x(x) - x(7) = 0
x(x - 7) = 0
x = 0 or x - 7 = 0
+ 7 + 7
x = 7
Solution Set: {0, 7}
12. 3x² - 4x = 20x + 27
+ 4x + 4x
3x² = 24x + 27
3x² - 24x - 27 = 0
x = -(-24) ± √((-24)² - 4(3)(-27))
2(3)
x = 24 ± √(576 + 324)
6
x = 24 ± √(900)
6
x = 24 ± 30
6
x = 4 ± 5
x = 4 + 5 or x = 4 - 5
x = 9 or x = -1
Solution Set: {9, -1}
Answer:
Step-by-step explanation:
c - 0.06c = 0.94c
total bill = 0.94c
Sharon spends 1248 because there are 52 weeks in a year and 24 * 52 = 1248
