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kotykmax [81]
2 years ago
5

Find the value of c in the circle. the dot represents the center of the circle.

Mathematics
1 answer:
Semenov [28]2 years ago
6 0

Answer:

c° = 28°

Step-by-step explanation:

hello :

you have the rectangle triangle : c°+62°+90° = 180°

c°+152°=180°

c° = 180°-152°

c° = 28°

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A fraction is shown. 6/18 Which expression is equivalent to this fraction?
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C. It would be 6 ÷ 18
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A probability that is computed with the knowledge of additional information is
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Answer: called conditional probability

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3 years ago
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1. Noah had $ 5.25 and Lin had $ 8.95. How much did they have altogether?
amid [387]

1. 5.25 + 8.95 = 14.20

2. 21.32 - 9.50 = 11.82

3. 24.50 × 5 = 122.5

4. 85.20 ÷ 4 = 21.3

Hope this helped! Please comment if you have any questions regarding how I got my answers. Stay safe.

4 0
2 years ago
Lisa is earning 7.50 dollars per hour she worked for 33 hours last week. how much money did she earn?
never [62]

Answer:

Lisa earned $247.50 for working 33 hours.

Step-by-step explanation:

WAY 1: proportional reasoning

7.50 x

------ = ----

1 h 33h

33 / 1 = 33

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WAY 2: unit rate reasoning

7.50 per hour so x value of money for 33 h

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7 0
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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
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