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shusha [124]
2 years ago
11

What is the mean of 7 and 38

alt="7 \sqrt{38} " align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Ivanshal [37]2 years ago
3 0

Answer:

The mean of 7 and 38 is 22.5.

Step-by-step explanation:

Mean: Mean the average of the numbers or in other words it is the sum of numbers divided by the count.

Here the numbers are 7 and 38 and the count is 2

therefore,

\textrm{Mean of 7 and 38} = \frac{Sum}{Count} \\= \frac{7+38}{2} \\= \frac{45}{2}\\ = 22.5

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How much interest is earned in 2 years on an investment of $2,000? The interest rate
natita [175]

Answer:

D. $120

Explanation:

P= principal amount, which is $2000 in this case

R= interest rate. In this case, it's 3% per year (or 0.03 in decimal form)

T= time, which in this case is 2.

To find the simple interest, we multiply 2000 × 0.03 × 2 to get 120.

I hope this helped! :)

7 0
2 years ago
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If a normal distribution has a mean of 44 and a standard deviation of 8, what is the zscore for a value of 50
Misha Larkins [42]

Answer:

0.75

Step-by-step explanation:

Z-score tells the no. of standard deviations a data point is from the mean.

the formula for z score is given by

z-score= (data value - mean) / standard deviation

Given:

mean=44

standard deviation= 8

data point=50

putting the values of mean(44), standard deviation(8) and given data value(50) in the above equation

z-score= (50-44)/8

           = 6/8

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5 0
2 years ago
What’s 7/8 x 1/3 in simplest form
Brut [27]

Answer:

7/24

Step-by-step explanation:

7/8 x 1/3= 7x1=7; 8x3=24

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2 years ago
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Kite QRST has a short diagonal of QS and a long diagonal of RT. The diagonals intersect at point P. Side QR= 5 m and diagonal QS
svet-max [94.6K]

Answer:

Given the statement: Kite QRST has a short diagonal of QS and a long diagonal of RT. The diagonals intersect at point P.

Properties of Kite:

  • The diagonals are perpendicular
  • Two disjoint pairs of consecutive sides are congruent by definition of kite
  • One diagonal  is the perpendicular bisector to the other diagonal.

It is given that: Side QR = 5m and diagonal QS = 6m.

Then, by properties of kite:

QP = \frac{1}{2}QS

Substitute the value of QS we get QP;

QP = \frac{1}{2}(6) = 3 m

Now, in right angle \triangle RPQ

Using Pythagoras theorem:

QR^2= RP^2 +QP^2

Substitute the given values we get;

(5)^2= RP^2 +(3)^2

or

25= RP^2 +9

Subtract 9 from both sides we get;

16= RP^2

Simplify:

RP = \sqrt{16} = 4 m

Therefore, the length of segment RP is, 4m


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2 years ago
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