How do I do this? <br><br> help!!

uranmaximum [27]

Answer:

52 ft

Step-by-step explanation:

For each chord, the product of segment lengths is a constant. We can find that constant as the product of the segment lengths of the bisected chord:

(24 ft)·(24 ft) = 576 ft^2

Then the missing segment length (DX) of the diameter chord is ...

DX·(36 ft) = 576 ft^2

DX = (576 ft^2)/(36 ft) = 16 ft

So, the total length of the diameter chord is ...

DX +XL = 16 ft + 36 ft

DL = 52 ft

_____

We know DL is a diameter because the perpendicular bisector of any chord intersects the center of the circle.

5 0

3 years ago

A company manufacturing oil seals wants to establish X and R control charts on the process. There are 25 preliminary samples of

alisha [4.7K]

Answer:

A ) i) X control chart : upper limit = 50.475, lower limit = 49.825

ii) R control chart : upper limit = 1.191, lower limit = 0

Step-by-step explanation:

A) Finding the control limits

grand sample mean = 1253.75 / 25 = 50.15

mean range = 14.08 / 25 = 0.5632

Based on X control CHART

The upper control limit ( UCL ) =

grand sample mean + A2* mean range ) = 50.15 + 0.577(0.5632) = 50.475

The lower control limit (LCL)=

grand sample mean - A2 * mean range = 50.15 - 0.577(0.5632) = 49.825

Based on R control charts

The upper limit = D4 * mean range = 2.114 * 0.5632 = 1.191

The lower control limit = D3 * mean range = 0 * 0.5632 = 0

B) estimate the process mean and standard deviation

estimated process mean = 50.15 = grand sample mean

standard deviation = mean range / d2 = 0.5632 / 2.326 = 0.2421

note d2 is obtained from control table

6 0

3 years ago

A school is planning an event to raise 1000 for charity. The cost of organizing the event is 200. The tickets are priced at 6 pe

alexdok [17]

Answer:

a) 1200

b) 150

Step-by-step explanation:

a) total revenue = target amount + expenses

... total revenue = 1000 + 200

... total revenue = 1200

b) total revenue = adult tickets × adult ticket price

... 1200 = adult tickets × 8 . . . . . . . . . . fill in the information you know

... 1200/8 = adult tickets = 150 . . . . . divide by 8

4 0

3 years ago

Read 2 more answers

Avicenna, a major insurance company, offers five-year life insurance policies to 65-year-olds. If the holder of one of these pol

ki77a [65]

Answer:

Avicenna can expect to lose money from offering these policies. In the long run, they should expect to lose ___33__ dollars on each policy sold

Step-by-step explanation:

Given :

The amount the company Avicenna must pay to the shareholder if the person die before 70 years = $ 26,500

The value of each policy = $497

It is given that there is a 2% chance that people will die before 70 years and 98% chance that people will live till the age 70.

The expected policy to be sold= policy nominal + chances of death

= 497 + [98% (no pay) + 2% (pay)]

= 497 + [98%(0) + 2%(-26500)]

(The negative sign shows that money goes out of the company)

= 497 - 2% (26500)

= 497 - 530

=33

Therefore the company loses 33 dollar on each policy sold in the long run.

7 0

3 years ago

Adding and Subtracting with Rational Numbers

stepladder [879]

Answer:

Net change is the change compared to zero level

From positive 2.2 feet to negative 2.4 feet

The distance between the elevations

2.2 + 2.4 = 4.6 feet

10 feet

8.2 feet

Positive elevation brings the level close to the deck

8.2 - 2.2 = 6 feet

Negative elevation takes the level apart from the elevation of the surf shop

10 - (-2.4) = 12.4 feet
The surf shop was higher

6 0

3 years ago

Read 2 more answers

How do I do this? help!!