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galina1969 [7]
3 years ago
12

brian is interested in keeping track of the battery life of his laptops. the average battery life he recorded is 48%. if the sum

of his battery lives are 288%, what is the total number of laptops he owns?
Mathematics
1 answer:
Reptile [31]3 years ago
4 0

Answer:

He owns 6 laptops.

Step-by-step explanation:

48 × 6 = 288.

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Is (-4,4) the solution of the system. 4x+5y>-6 and -2x+7y>20
nikklg [1K]

Answer:

  It is <em>a</em> solution, one of an infinite number of solutions.

Step-by-step explanation:

You can check to see if the given point is in the solution set:

  4(-4) +5(4) = -16 +20 = 4 > -6 . . . . yes

  -2(-4) +7(4) = 8 +28 = 36 > 20 . . . yes

The offered point satisfies both inequalities, so is in the solution set. It is not <em>the</em> solution, but is one of an infinite number of solutions.

7 0
3 years ago
What is the minimum number of clients the travel agent should survey? Note that z=1.96 for a 95% confidence interval.
slega [8]

Answer:

121

Step-by-step explanation:

Given data as per the question

Standard deviation = \sigma = 840

Margin of error = E = 150

Confidence level = c = 95%

For 95% confidence, z = 1.96

based on the above information, the minimum number of clients surveyed by the travel agent is

n = (\frac{z\times \sigma}{E})^2

=  (\frac{1.96\times 840}{150})^2

= 120.47

= 121

hence, the 121 number of clients to be surveyed

Therefore we applied the above formula to determine the minimum number of clients

4 0
3 years ago
Which answer shows the equation y-x=5 written in slope intercept form
Mekhanik [1.2K]
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3 0
3 years ago
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Imagine that you need to compute e^0.4 but you have no calculator or other aid to enable you to compute it exactly, only paper a
labwork [276]

Answer:

0.0032

Step-by-step explanation:

We need to compute e^{0.4} by the help of third-degree Taylor polynomial that is expanded around at x = 0.

Given :

e^{0.4} < e < 3

Therefore, the Taylor's Error Bound formula is given by :

$|\text{Error}| \leq \frac{M}{(N+1)!} |x-a|^{N+1}$   , where $M=|F^{N+1}(x)|$

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         $\leq \frac{3}{24} \times (0.4)^4$

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Therefore, |Error| ≤ 0.0032

4 0
3 years ago
If $3800 is invested in a savings account for which interest is compounded
Volgvan

$125 per quarter, if quarter means every 3 months.

5 0
3 years ago
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