Hello
5^(2x) = 27
if : a>0 and b>0 a = b <span>equivalent to log(a) = log (b)
</span> log (5^(2x)) = log(27) ... (1)
a>0 and b>0 log(a^n) = nlog(a)
(1) equivalent to :<span>2x log 5 = log 27</span>
Answer:
262.5 messages per month
Step-by-step explanation:
Cost of plan = $34.99
Cost per message = $0.16
Maximum bill = $42
Maximum # of messages = $42/$0.16 = 262.5
Answer:
The percentage decrease is 7%
Step-by-step explanation:
To find the percent decrease, first find the difference in the two costs.
$210,000 - $195,300 = $14,700
Now divide that number by the original cost.
$14,700/$210,000 = 7%
Answer:
x = -15
Step-by-step explanation:
In fractional equations we cross multiply the expressions:
In cross multiplying the denominator of the first fraction is multiplied with the numerator of the second fraction and vice versa:
-2x = 30 divide both sides by -2
x = -15
1824 the estimate is 1820