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3 years ago

Which of the following statements contain a variable? Check all that apply.

Mathematics

1 answer:

Roman55 [17]3 years ago

4 0

B
Explanation:

A Variable is a symbol for a number we don't know yet. We don’t know the number of colors on the page.

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ddd [48]

I do believe that the LCD of those would be 3

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3 years ago

Solve for x a.81 b.41 c.1681

Jlenok [28]

A=9 , b=40

Pythagorean theorem
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3 years ago

Find the m TFS. Answer choices are: 12 degrees 76 degrees 64 degrees 52 degrees

goblinko [34]

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3 years ago

Let [n] = 1 if n is odd and 0 if n is even, for all positive integer n. if [n] * [n+8] = 0, then what is one possible value of n

astra-53 [7]

$[n][n+8]=0$

if either or both of $[n]$ and $[n+8]$ are 0, i.e. if one or both of $n$ and $n+8$ are even. But both will be even if $n$ is even, and odd otherwise, so any even $n$ will be a solution, e.g. $n=2$ .

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3 years ago

A magazine currently has 8700 subscribers for its online web version. It is adding members at the rate of R(t) = 190e0.03t subsc

aleksklad [387]

Number of subscriber the magazine will have after 3 years from now approximately be 8767

Solution:

Given that magazine currently has 8700 subscribers for its online web version

$\begin{array}{l}{\mathrm{R}(\mathrm{t})=190 \mathrm{e}^{0.03 \mathrm{t}} \text { subscribers/month }} \\\\ {\mathrm{S}(\mathrm{t})=\mathrm{e}^{-0.06 \mathrm{t}}}\end{array}$

After 3 years, time(t) = 36 month

Total number of subscribers after 3 years from now :

Substitute "t" = 36

$\begin{array}{l}{\mathrm{R}(36)=190 \mathrm{e}^{0.03 \times(36)}=190 \times(2.944)} \\\\ {\mathrm{R}(36) \approx 560} \\\\ {\mathrm{S}(36)=\mathrm{e}^{-0.06 \times(36)}=0.12}\end{array}$

Subscribers remaining = 0.12 x 560 = 67.2

The magazine currently has 8700 subscribers

Added Subscriber = 8700 + 560 = 9260

Remaining Subscriber = 8700 + 67.2 = 8767.2

Therefore number of subscriber the magazine will have after 3 years from now approximately be 8767

7 0

3 years ago