I didn't solve number 11. But solved 9 and 10. Helped with 11.
Answer:
-3
Step-by-step explanation:
A number, n, decreased by 5: n - 5
3 times the number +1 = 3*n + 1 = 3n + 1
3n +1 = n -5
Subtract 1 from both sides
3n = n - 5 - 1
3n = n - 6
Subtract 'n' from both sides
3n - n = -6
2n = -6 {Divide both sides by 2}
n = -6/2
n = -3
The number = - 3
Answer:
T = 15
Step-by-step explanation:
<u>I = PRT </u>
I = $270 000
P = 150 000
R = 12% or 0.12
Put in the values for each variable.
270 000 = 150 000 × 0.12 × T
T = 270 000 ÷ 150 000 ÷ 0.12
= 15