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spin [16.1K]
3 years ago
15

What metric unit would be appropriate to measure a length of two cities?

Mathematics
1 answer:
Nady [450]3 years ago
8 0
Miles or kilometers.
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Does anyone know this one !??
Gennadij [26K]

Answer:

I can't see what this says

Step-by-step explanation:

3 0
3 years ago
What is the expression for f(x) when we rewrite <br> (5⁻⁴ˣ⁺⁷)÷(125x) as 5^f(x)
alexandr402 [8]

Answer: The answer is f(x) = -7x + 7.


Step-by-step explanation:  We are give a relation as follows :

5^{-4x+7}\div 125^x=5^{f(x)}.

From here, we need to find the expression for f(x).

Here, we will be using the following properties of exponents :

(i)~\dfrac{a^x}{a^y}=a^{x-y}.\\\\(ii)~a^x=a^y~\Rightarrow x=y.

We have

5^{-4x+7}\div 125^x=5^{f(x)}\\\\\Rightarrow5^{-4x+7}\div 5^{3x}=5^{f(x)}\\\\\\\Rightarrow \dfrac{5^{-4x+7}}{5^{3x}}=5^{f(x)}\\\\\\\Rightarrow 5^{-4x+7-3x}=5^{f(x)}}\\\\\Rightarrow 5^{-7x+7}=5^{f(x)}\\\\\Rightarrow -7x+7=f(x).

Thus, the required expression is f(x) = -7x + 7.




8 0
3 years ago
A typical red blood cell in human blood has a diameter of approximately 0.000007 m. Enter this diameter
pav-90 [236]

Answer:

In scientific notation, that would be;

7.0 * 10^-7 m

Step-by-step explanation:

Here, we want to write the given diameter in scientific notation

Mathematically, that can be done by moving the decimal point to the back of 7

The number of times we move will be counted as negative powers of 10 host

Thus, we have;

7.0 * 10^-7

4 0
3 years ago
A snail travels at a rate of 2.35 feet per minute. Write a rule to describe the function. How far will the snail travel in 5 min
PolarNik [594]

distance = speed x time

distance = 2.35 x time

distance = 2.35 x 5

distance = 11.75 feet in 5 minutes

7 0
4 years ago
What is the simplest form of the expression 6x(x - 4) – 16x2 - (9x - 1)?
Pie

Answer

b

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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