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zheka24 [161]
3 years ago
7

HELP WILL MAKE BRAINLIST TO WHOEVER DID IN EXPLAINATION

Mathematics
1 answer:
Nataly_w [17]3 years ago
7 0

Answer:

The scouts hiked up the mountain in 1 mile.

Step-by-step explanation:

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Brenda has a balance of d dollars in her piggy bank. Explain what value(s) d may have if d = 28
DENIUS [597]
Not sure what you're asking!  
Brenda has a blance of 38 dollars in her piggy bank.  What exactly do you still need to learn / know?

She might have 3-$10 bills, 1-$5 bill and 3-$1 bills.  Other combinations are possible.
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3 years ago
A normally distributed set of numbers has a mean of 75 and a standard deviation of 7.97. What percentage of values lies between
lana [24]

Answer:

63% of the values lies between 70 and 85.

Step-by-step explanation:

We are given that a normally distributed set of numbers has a mean of 75 and a standard deviation of 7.97.

<em>Let X = Set of numbers</em>

The z-score probability distribution for is given by;

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

where, \mu = mean value = 75

            \sigma = standard deviation = 7.97

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, percentage of values that lies between 70 and 85 is given by = P(70 < X < 85) = P(X < 85) - P(X \leq 70)

   P(X < 85) = P( \frac{  X -\mu}{\sigma} < \frac{  85-75}{7.97} ) = P(Z < 1.25) = 0.89435  {using z table}

   P(X \leq 70) = P( \frac{  X -\mu}{\sigma} \leq \frac{  70-75}{7.97} ) = P(Z \leq -0.63) = 1 - P(Z < 0.63)

                                                 = 1 - 0.73565 = 0.26435

<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 = 1.25 and x = 0.63 in the z table which has an area of 0.89435 and 0.73565 respectively.</em>

Therefore, P(70 < X < 85) = 0.89435 - 0.26435 = 0.63 or 63%

<em>Hence, 63% of the values lies between 70 and 85.</em>

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3 years ago
Classify the triangle based on angle measures.
arlik [135]

This is an obtuse triangle because one angle of it is greater than 90 degrees :)

3 0
3 years ago
Next two terms 5, 3, 1.8, 1.08
Alenkinab [10]
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hmm
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what=0.6
each term is multiplied by 0.6

so
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the next 2 terms are 0.648 and 0.3888
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nignag [31]
The picture is unclear so I cannot really help.  I'm sure I could if it was clearer though.
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