Help now ____________[

Firdavs [7]

The last statement "Graph B is a valid density curve because the curve is above the horizontal axis, and the area under the curve is 1." is the correct statement.

A few fundamental principles apply to density curves:

A density curve's area beneath it represents probability.

A density curve's area under it equals one.

Base x height in a uniform density curve equals one.

The likelihood that x = a will never occur.

The likelihood that x < a is the same as that of x ≤ a.

Following the rules above, we can see from graph B that the curve is above the horizontal axis. That shows that the probabilities are positive which is a necessity. Moreover, the area under the curve must also be 1. That is also satisfied.

Hence, the last statement "Graph B is a valid density curve because the curve is above the horizontal axis, and the area under the curve is 1." is the correct statement.

Learn more about density curves here-

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5 0

2 years ago

Read 2 more answers

59::

blagie [28]

Answer:

1

Step-by-step explanation:

59 Jackrabbits divided by 40 miles per hour =

59

÷40

<h2>1.475, which is equal to 1 rounded to the nearest whole number.</h2>

7 0

3 years ago

Using the graphing function on your calculator, find the solution to the system

sesenic [268]

Answer:

The answer is B.

Step-by-step explanation:

3 0

3 years ago

A bookstore charges $4 for shipping, no matter how many books you buy. Irena makes a graph showing the shipping cost for I to 5

ra1l [238]

Answer:

Yes

Step-by-step explanation:

1 book = $4

2 books = 2*$4

3 books = 3*$4

4 books = 4*$4

5 books = 5*$4

This can be shown as: y=4x

y=ax+b is linear function, Irena is right

6 0

3 years ago

Find the perimeter and total area of the compositor shape shown below. All measurements are given in inches.

Assoli18 [71]

$\bold{\huge{\pink{\underline{ Solution }}}}$

<h3>Given :-</h3>

The radius of the hemisphere is 3 units
The height of the hemisphere is 3 units
The height of the triangle is 4 units
The other two sides of triangle is 5 units each

We have to find the area and perimeter of the composite solid ?

<h3>Let's Begin :- </h3>

We have given one composite which is composed of hemisphere and triangle

We know that,

Perimeter of hemisphere 

$\bold{\red{ = }}{\bold{\red{\pi{r}}}}$

Perimeter of the triangle

$\bold{\pink{ = S + S + S }}$

[ Both the figures have common base area ]

<h3>Therefore, </h3>

Total perimeter of the composite solid

$\sf{ = 5 + 5 + }{\sf{\dfrac{22}{7}}}{\sf{\times{r}}}$

$\sf{ = 10 + }{\sf{\dfrac{22}{7}}}{\sf{\times{3}}}$

$\sf{ = 10 + }{\sf{\dfrac{66}{7}}}$

$\sf{ = }{\sf{\dfrac{70 + 66}{7}}}$

$\sf{ = }{\sf{\dfrac{136}{7}}}$

$\bold{ = 19.42\: inches }$

Thus, The perimeter of the composite solid is 19.42 inches

We have to find the area of composite solid

We know that,

Area of hemisphere

$\bold{\blue{ = }}{\bold{\blue{\dfrac{1}{2}}}}{\bold{\blue{\pi{r²}}}}$

$\sf{ = 0.5}{\sf{\times{\dfrac{22}{7}}}}{\sf{\times{ 3 }}}{\sf{\times{ 3 }}}$

$\sf{ = 0.5}{\sf{\times}}{\sf{\dfrac{22}{7}}}{\sf{\times{ 9 }}}$

$\sf{ = 0.5}{\sf{\times{\dfrac{198}{7}}}}$

$\sf{ = }{\sf{\dfrac{99}{7}}}$

$\bold{ = 14.14\: inches }$

We also know that,

Area of triangle

$\bold{\purple{ = }}{\bold{\purple{\dfrac{1}{2}}}}{\bold{\purple{\times{ Base}}}}{\bold{\purple{\times{height }}}}$

Subsitute the required values,

$\sf{ = }{\sf{\dfrac{1}{2}}}{\sf{\times{ 4 }}}{\sf{\times{3}}}$

$\sf{ = 2 }{\sf{\times{ 3 }}}$

$\bold{ = 6\: inches }$

[Note :- Both the figures have common base area. So for triangle base area will be 6/2 = 3 in.]

<h3>Therefore, </h3>

Total Area of the composite solid

$\sf{ = 14.14 + 6}$

$\bold{\red{ = 20.14\: inches }}$

Hence, The perimeter and area of composite solid is 19.42 inches and 20.14 inches .

4 0

2 years ago

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