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larisa86 [58]
3 years ago
14

Using the rules for significant figures what do you get when you subtract 12.63 from 52.2147

Mathematics
1 answer:
Kipish [7]3 years ago
6 0

Answer:

Step-by-step explanation:

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4-x suare= -16 what is the answer
Snowcat [4.5K]

4-x^2=-16\\\\
x^2=20\\\\
x=\sqrt{20} \vee x=-\sqrt{20}\\\\
x=2\sqrt5 \vee x=-2\sqrt5

7 0
3 years ago
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The lifetime of a battery in a certain application is normally distributed with mean μ = 16 hours and standard deviation σ = 2 h
DaniilM [7]

Answer:

Probability that a battery will last more than 19 hours is 0.0668.

Step-by-step explanation:

We are given that the lifetime of a battery in a certain application is normally distributed with mean μ = 16 hours and standard deviation σ = 2 hours.

<em>Let X = lifetime of a battery in a certain application</em>

So, X ~ N(\mu=16,\sigma^{2} =2^{2})

The z-score probability distribution for normal distribution is given by;

               Z = \frac{  X -\mu}{\sigma}  ~ N(0,1)

where, \mu = mean lifetime = 16 hours

            \sigma = standard deviation = 2 hours

The Z-score measures how many standard deviations the measure is away from the mean. After finding the Z-score, we look at the z-score table and find the p-value (area) associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X.

So, the probability that a battery will last more than 19 hours is given by = P(X > 19 hours)

  P(X > 19) = P( \frac{  X -\mu}{\sigma} > \frac{19-16}{2} ) = P(Z > 1.50) = 1 - P(Z \leq 1.50)

                                              = 1 - 0.9332 = 0.0668

<em>Now, in the z table the P(Z </em>\leq<em> x) or P(Z < x) is given. So, the above probability is calculated by looking at the value of x = 1.50 in the z table which has an area of 0.9332.</em>

Hence, the probability that a battery will last more than 19 hours is 0.0668.

5 0
3 years ago
You have already traveled 25 miles. If you continue driving at the same speed, x miles per hour, for 5 more hours, you will trav
Fiesta28 [93]

Answer:1

Step-by-step explanation:

8 0
3 years ago
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A display case for the artifact is in the shape of a cube. Each side of the display case is three times longer than the width ww
Katena32 [7]
A cube is a 3d object bounded by  6 square faces. 

Each side of the display case is 3 times longer than the width of the artifact.

width of the artifact = w
side of the cube = 3w

<span>a. Write an expression for the volume of the case.
 volume of a cube is the measure of its side raised to the power of 3.

Volume = (3w)</span>³

<span>Volume = 27w</span>³<span>

</span>
6 0
3 years ago
What's the Answer ~ <br><br><img src="https://tex.z-dn.net/?f=%20%5Csf%20%5Ctiny%7B14%20%20%2B%20%2014%20%5Cdiv%207%7D" id="TexF
butalik [34]

Step-by-step explanation:

remember the priorities of the different mathematical operations

1. brackets

2. exponents

3. multiplications and divisions

4. additions and subtractions

so,

14 + 14/7 = 14 + 2 = 16

8 0
2 years ago
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