Hello from MrBillDoesMath!
Answer:
Take you pick below! (either x 8 or x = 7.01, approx, depending how the question is interpreted)
Discussion:
Interpretation 1
If the question is
2^(x -1) = 128, then as 2^7 = 128,
x-1 = 7 so x = 8
Interpretation 2
If the question is (2^x -1) = 128, then..
2^x = 128 + 1 = 129 =>
log(2^x) = log(129) =>
xlog(2) = log(129) =>
x = log (129) / log2 = 7.01
Regards,
MrB
The formula to find the perimeter of a rectangle is:
P = 2(l + w)
plug in your known values to solve for the unknown
20 = 2(l + 3)
20 = 2l + 6
14 = 2l
14/2 = l
7 = l or l = 7
you can check this by plugging your l value into the equation
P = 2(l + w)
20 = 2(7 + 3)
20 = 2(10)
20 = 20
hope this helps :)
Answer:
-2 , 4
Step-by-step explanation:
(x - 1)² – 9=0
(add nine to both sides)
(x - 1)² = 9
(square root both sides)
x - 1 = (positive or negative) 3
(add 1)
x = 4 or -2
Answer:
a) $235.65
b) $57,499.58
Step-by-step explanation:
Tax rate is 1 mill or $0.001 on every $1 of appraised value. This means the tax rate is:
Tax rate = $0.001 per $1 = 
Part a)
Appraised value of medical center = $ 235,654
Tax rate = 0.1%
Tax Amount due = 0.1% of $ 235,65 = 
Thus, the tax due for 1 mill is $235.65 rounded to nearest cent.
Part b)
New Tax rate = 244 mills = 
Tax rate is 1 mill or $0.001 on every $1 of appraised value. This means the tax rate is:
Tax rate = $0.244 per $1 = 
Tax Amount due = 24.4% of $ 235,65 = 
Thus, the tax due for 244 mills is $57,499.58 rounded to nearest cent.