1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ierofanga [76]
2 years ago
13

Free pts giveaway! :))

Mathematics
2 answers:
Charra [1.4K]2 years ago
7 0

Answer:

thank u for free pts aishshhaha

vredina [299]2 years ago
5 0

Answer:

Hi

Step-by-step explanation:

Hi?

You might be interested in
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 drive 140 miles in 2.5 hours and 300 miles in 5.5 hours. What is the rate of change ?
Sveta_85 [38]
The answer is one and five elevenths, or: 1 5/11

this is because 140/2.5 is 56 and 300/5.5 is 54 6/11.

56 - 54 6/11= 1 5/11
7 0
3 years ago
Solve the absolute value equation 4 − |x| = 1
VMariaS [17]

Answer :SOLVING EQUATIONS CONTAINING ABSOLUTE VALUE(S)

Step 1: Isolate the absolute value expression.

Step2: Set the quantity inside the absolute value notation equal to + and - the quantity on the other side of the equation.

Step 3: Solve for the unknown in both equations.

Step 4: Check your answer analytically or graphically.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
HELP ASAP PLEASE HELP QUICK!!!!
masha68 [24]

Answer:

4:5 that's last answer i got

6 0
3 years ago
Read 2 more answers
GIVING BRAINLIEST Write an equation to represent the number puzzle. Use x as the
amid [387]

Answer:

It's C

Step-by-step explanation:

When I wrote it out I got x^2+7=7x-5

3 0
3 years ago
Other questions:
  • Which value should be added to this data set to produce a mean of 13?
    5·2 answers
  • 50 - 3n = 7n + 80<br><br>I need help on the steps on doing this problem??
    12·1 answer
  • What is the surface area of the hemishpere?<br> 32 m
    8·2 answers
  • 1
    12·1 answer
  • Find the value of x.<br> A) x = 60 <br> B) x = 59 <br> C) x = 121 <br> D) x = 177
    12·1 answer
  • The radius of a circle is 5 m. Find its area to the nearest tenth.
    5·1 answer
  • Can you please answer these??​
    6·1 answer
  • Find the value of x
    7·1 answer
  • What is the value of m in the equation {m-án=16, when n = 8?<br> A 20<br> B 32<br> C 44<br> D 48
    9·1 answer
  • Hi i know im desperate but pls ill give you BIG BIG points…
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!