Answer:
According to someone on quizlet, the answere is A. I hope they are right for ur sake
This is a really interesting question!! exponential functions and logarithmic functions are actually inverses functions; the way to "undo" logarithms is by exponents, the way to "undo" exponents is by logarithms. an exponent tells you how many times you need to multiply a value; logarithms ask what exponent you need to get a certain value. you could use logarithms and exponents to calculate interest rates, as a real life example. they can also be used in calculating population growth or the half-life of an organism in biology.
[scomposition of 45]
[9 = 3^2, must use this notation (not 3*3)]
[We appy one of the proprieties of square roots]
[now we semplify: we must take out as much as possible all the elements under roots]
[to do that, we must divide the esponent of each element with the index of square roots (2)]
so
, 2/2 = 1
, 1/2 = 0 with 1 of rest
, 5/2 = 2 with 1 rest
[well, after do that, we can take out the elements under tbhe square roots!]
The quotient of each division is the esponent of the element out of the root
The rest of each division is the esponent of the element under the root
so:
(quotient = 1, see the first operation) * (rest = 1, see the second operation) * 
(quotient = 2, see the third operation) * 
(rest = 1, see the third operation)
The final result is:
3 (=3^1) * a² * √5 * √a
3a²√5a
It's more intuitive and easy, but the explanation (necessary) is very long. If you have other questions, ask me here in the comments! Also sorry for my english, not so good!
Answer:
$38.5
Step-by-step explanation:
First we need to convert 250 centimeters to meters:
250 cm = 2.5 m
To find how much did Mimi pay for the fabric, we can use a rule of three:
One meter of fabric costs $15.40, so what is the cost of 2.5 m?
1 m -> 15.4
2.5 m -> x
x = 15.4 * 2.5 = $38.5
Mimi will pay $38.5 for the 250 centimeters of fabric.
