WILL GIVE BRAINLIEST AWARD! THANKS AND STARS, <br><br> What is the length of the segment EH?

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

The function f(x) = -square root x is shown on the graph.

konstantin123 [22]

Answer:

O The range of the function is all real numbers greater

than or equal to 0.

Step-by-step explanation:

The function f(x) = -square root x is shown on the graph.

Which statement is correct?

ТУ

7

6

5

3

The domain of the function is all real numbers less

than or equal to - 1

O The range of the function is all real numbers greater

than or equal to 0.

The range of the function is all real numbers less

than or equal to 0.

The domain of the function is all real numbers less

than or equal to 0.

2

55

14

-

2

-

3

4 5 6 7 X

-2

3

4

-5

6 0

3 years ago

Read 2 more answers

Someone solve these equations with working really appreciate it

nignag [31]

Answer:

a) $t = \sqrt{\frac{d}{4.9} }$

b) t = 0.3 seconds

c) d = 4.9t²

d) d = 11 cm.

Step-by-step explanation:

One test involves catching a 1 m ruler and measuring the distance, d in meters, that the ruler will travel before being caught, the reaction time t in seconds is then calculated using the formula

$t = \sqrt{\frac{2d}{9.8} }$ .......... (1)

a) the simplified expression is

$t = \sqrt{\frac{d}{4.9} }$ ......... (2)

b) If d = 44 cm = 0.44 meters, from equation (2) we get,

t = 0.299 seconds ≈ 0.3 seconds (Approximate)

c) If we make d as the subject of the equation, then

$t^{2} = \frac{d}{4.9}$

⇒ d = 4.9t² .......... (3)

d) Now, if $t = \frac{0.3}{2} = 0.15$ seconds, then from equation (3) we get,

d = 4.9 (0.15)² = 0.11 meters = 11 cm (Answer)

4 0

3 years ago

A building's rafter forms the hypotenuse of a 30°-60°-90° triangle with the roof's frame. If the rafter measures 9 feet, then th

Dmitriy789 [7]

Answer:

-90'

Step-by-step explanation:

7 0

3 years ago

Sarah went to the grocery store and bought bottles of soda and bottles of juice. Each

kow [346]

Answer:

5 numbers of soda bottles and 10 numbers of juice bottle was purchased.

Step-by-step explanation:

Let Sarah purchased x bottles of Soda and y bottles of Juice.

Each soda bottle contains 45 gm of sugar and each juice bottle contains 30 gm of sugar, and there is a total of 525 gm of sugar,

Hence, we can write 45x + 30y = 525, ⇒ 3x + 2y = 35 ...... (1)

Now, it is given that, she purchased 5 more bottles of juice than bottles of soda.

Hence, x + 5 = y, ⇒ x - y = - 5 ......... (2)

Now, solving equations (1) and (2) we get, 5x = 25, ⇒ x = 5

Hence,from equation (2), y = x + 5 = 10

Therefore, 5 numbers of soda bottles and 10 numbers of juice bottle was purchased. (Answer)

5 0

3 years ago

WILL GIVE BRAINLIEST AWARD! THANKS AND STARS, What is the length of the segment EH?