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zloy xaker [14]
3 years ago
8

ITS AN EMERGENCY PLEASE HELPP MEEEE !!!!

Mathematics
1 answer:
babymother [125]3 years ago
4 0

Answer: 832

Step-by-step explanation:

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A Sample Of 100 Clients Of An Exercise Facility Was Selected. Let X- The Number Of Days Per Week That A Randomly Selected Client
julia-pushkina [17]

Answer: 1.013

Step-by-step explanation:

Given the following data :

X_______f___fx___fx²

1_______15__15___15

2______30__60__120

3______28__84__252

4______10__40___160

______ 83__199__547

Number that is 1.5 standard deviations below the mean :

Mean(m) :

Σfx /Σf

(15 + 30 + 28 + 10) / 83

= 199 / 83

= 2.3976

Standard deviation(s) :

Sqrt[(Σfx² - (Σfx)²/Σf) /Σf-1]

sqrt[(547 - (199)²/83) / 83 - 1]

sqrt[(547 - (39601/83) / 82]

sqrt[(547 - 477.12) / 82]

sqrt(0.8522)

Standard deviation = 0.9231

1.5 standard deviations below the mean:

Mean - 1.5(standard deviation)

2.3976 - 1.5(0.9231)

2.3976 -1.38465

= 1.01295

= 1.013

4 0
3 years ago
Solve for x. x/2≥−4<br> plz i need help!
Leto [7]

Answer:

x= -8

Step-by-step explanation:

x/2 is greater than of equal to -4

hence

x/2=-4

x=-4*2= -8

7 0
3 years ago
Ripley told his mom that multiplying whole numbers by multiples of 10 was easy because you just count zeros in the factors and p
zhuklara [117]

Answer:

She is right, it won´t always work.

Step-by-step explanation:

Hi, in the examples this tactic works because the first numbers, when multiplied, don´t equal 10 (7x6=42 and 8x7=56). If you multiply both numbers and give you 10, you will have to add another zero to the final number and the trick would crash.

Example:

    200    x       500      =    100,000

(2 Zeros)      (2 zeros)        (5 zeros)

Best of luck.

5 0
3 years ago
If the slope of a line is 3, what is the slope of the line that is parallel to it?
Taya2010 [7]

Answer:

3

Step-by-step explanation:  If they are parallel, the lines will always run the same distance apart and never intersect.  If the slopes are different, they will intersect at some point

4 0
3 years ago
Read 2 more answers
May cut a circle into 8 equal sections. He drew an angle that measures the same as the total measure of 3 of the sections of cir
SIZIF [17.4K]
135 degrees. 
A circle = 360 degrees and 360/8 = 45. 45 x 3 = 135
8 0
3 years ago
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