Answer:
- 4
Step-by-step explanation:
Using the rule of exponents
• 
× 
⇔ 
• 
⇔ 
= 
= 
and right side
= 
× 
Hence
= 
× 
= 
Equating exponents on both sides gives
a + 10 = - 2a - 2 ( add 2a to both sides )
3a + 10 = - 2 (subtract 10 from both sides )
3a = - 12 ( divide both sides by 3 )
a = - 4
The ladder is the hypotenuse of a 45 45 90 triangle.
The legs of a 45 45 90 triangle = hypotenuse / sqroot (2)
15 / 1.414 = 10.608
(Incidentally it is the "bottom" of the ladder that is 10.608 feet from the wall. The "top" of the ladder is touching the wall. LOL)
Answer:
$1550.69
Step-by-step explanation:
Deposits get added and withdrawals and bill payments get subtracted from the balance. The new balance is ...
$1349.85 -80 +699.65 -215.70 -53 -49.76 -100.35 = $1550.69
so, start floor = x
x + 7 - 9 - 4 + 8 - 2 = 14
x = 14
the elevator started on the 14th floor.
to verify: 14 + 7 = 21 - 9 = 12 - 4 = 8 + 8 = 16 - 2 = 14
