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VikaD [51]
3 years ago
7

Company A charges $50 rental fee and $20 per hour.Then Company B charges $35 rental fee and $25 per hour.At which hour do both c

ompanies cost the same ?
Mathematics
2 answers:
Scrat [10]3 years ago
4 0

Answer:

Hour 3.

Step-by-step explanation:

                          A                                 B

Hour 1               $ 70                             $60

Hour 2              $90                              $85

Hour 3              $110                             $110

KengaRu [80]3 years ago
3 0
For company a it would be at the 8th hour and they would be 210 and for company b it would be at the 7th hour
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this picture would help you man stay strong

4 0
3 years ago
How derivative of this absolute value function is like this!
Daniel [21]

Recall the definition of absolute value.

|x| = \begin{cases} x & \text{if } x \ge 0 \\ -x & \text{if } x < 0 \end{cases}

When x,

|x| = x \implies \dfrac{d|x|}{dx} = 1

When x,

|x| = -x \implies \dfrac{d|x|}{dx} = -1

The derivative does not exist at x=0, since the one-sided limits

\displaystyle \lim_{x\to0^-} f'(x) = -1

and

\displaystyle \lim_{x\to0^+} f'(x) = +1

do not match.

So the derivative of |x| is

\dfrac{d|x|}{dx} = \begin{cases} 1 & \text{if } x > 0 \\ -1 & \text{if } x < 0 \\ \text{undefined} & \text{if } x = 0\end{cases}

Now we can write this as

\dfrac{d|x|}{dx} = \dfrac x{|x|} = \dfrac{|x|}x

since

x > 0 \implies |x| = x \implies \dfrac{|x|}x = \dfrac xx = 1

and

x < 0 \implies |x| = -x \implies \dfrac{|x|}x = -\dfrac xx = -1

6 0
1 year ago
A bicycle has a listed price of $646.95 before tax. If the sales tax rate is 8.75%, find the total cost of the bicycle with sale
Musya8 [376]

Answer:

$703.558125

Step-by-step explanation:

56.608125 + 646.95= $703.558125

3 0
3 years ago
Need a bit of help on the question please
VladimirAG [237]
Hello,

as 6^3=6*6*6=216
∛(-216)=-6

5 0
3 years ago
Read 2 more answers
Samuel compared the monthly rental rates of two-bedroom apartments in Beverly and Lowell over the years. The results are shown i
Semenov [28]

Answer:

B. Only the monthly rental cost of apartments in Lowell is changing exponentially.

Step-by-step explanation:

To identify how the values ​​of the monthly costs of the departments are changing, we must do a test.

The test consists of taking an element n_{-1} and the element n of the series, and dividing \frac{n}{n_{-1}} = a

Then take the element n_{+1} and the element n and divide \frac{n_{+1}}{n} = b

If b = a, then the exponential function of base "b"

But if b> a, then the rate of change of the function is not exponential

For example. For the cost of apartments in Beverly

n_{-1} = 1870\\n = 1890\\n_{+1} = 1950\\\\\frac{n}{n_{-1}} = \frac{1890}{1870} = 1.011\\\\\frac{n_{+1}}{n} = \frac{1950}{1890} = 1.032\\\\1,032> 1,011

So, the cost of apartments in Beverly does not increase at an exponential rate.

We do the same for the cost of the apartments in Lowell.

n_{-1} = 1600\\n = 1680\\n_{+1} = 1764\\\\\frac{n}{n_{-1}} = \frac{1680}{1600} = 1.05\\\\\frac{n_{+1}}{n} = \frac{1764}{1680} = 1.05\\\\1.05 = 1.05

The rate is the same, so the prices increase exponentially.

Finally, the correct answer is option B: B. Only the monthly rental cost of apartments in Lowell is changing exponentially.

8 0
3 years ago
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