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asambeis [7]
3 years ago
7

A data set has a mean of 720 and a standard deviation of 6. which is closest to the z-score for an element of this data set with

a value of 709
Mathematics
1 answer:
lisabon 2012 [21]3 years ago
7 0
Mean = u = 720
Standard deviation = s = 6
Data Value = x = 709

The formula to calculate the z score is:

z= \frac{x-u}{s}

Using the values, we get:

z= \frac{709-720}{6} \\  \\ 
z=-1.83

Thus the z score for the data value will be -1.83. 
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Carlolyn determines that the area of a white triangle is half the area of a shaded triangle because the ratio of the side length
rjkz [21]
Ok so

area=1/2 times base times height
lets say base and height=3 for one triangle and
base and height=6 for another
area1=1/2 times 3 times 3=9/2
area2=1/2 tmes 6 times 6=18
areas are

9/2 to 18=9:36=1:4
3:6=1:2
is 1:2=1:4? no

ratio is 1:4
5 0
3 years ago
Select the correct answer from each drop-down menu.
Anit [1.1K]

Answer:

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  • 9, 15, 33, 87, 249
  • (4, 87) for example

Step-by-step explanation:

a) First differences of the f(x) values in the table are ...

  19 -13 = 6, 37 -19 = 18, 91 -37 = 54, 253 -91 = 162

The second differences are not constant:

  18 -6 = 12, 54 -18 = 36, 162 -54 = 108

But, we notice that both the first and second differences have a common ratio. This is characteristic of an exponential function. The common ratio is 18/6 = 3, so the parent function is 3^x.

__

b) Translating a function down 4 units subtracts 4 from each y-value. The values of f(x) in the table would be ...

  9, 15, 33, 87, 249

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c) The x-values of the function stay the same for a vertical translation, so the points in the table of the transformed function are ...

  (x, f(x)) = (1, 9), (2, 15), (3, 33), (4, 87), (5, 249)

8 0
3 years ago
X X Percents from frac The large rectangle below represents one whole. What percent is represented by the shaded area? 970​
Artyom0805 [142]

Answer:

b

Step-by-step explanation:

3 0
3 years ago
Select the letter of the correct answer.
sveta [45]
Would it be B which is 51%
as you do 129 devided by 3.3 = 39.1
180-39.1= 141
141 is just over half
4 0
3 years ago
Read 2 more answers
What is the answer for this algebra question 4(2n-5)=3n+10
miss Akunina [59]
4(2n-5)=3n+10\\\\
8n-20=3n+10\ \ \ |Subtract\ 3n\\\\
5n-20=10\ \ \ Add\ 20\\\\
5n=30\ \ \ |Divide\ by\ 5\\\\
n=\frac{30}{5}=6\\\\Solution\ is\ n=6.
4 0
3 years ago
Read 2 more answers
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