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olya-2409 [2.1K]
4 years ago
14

A security camera is centered 50 feet above a 100 foot hallway. it is easiest to design the camera with a constant angular rate

of rotation but this results in a variable rate at which the images of the surveillance camera or recorded. so it is desirable to design a system with a variable rate of rotation and a constant rate of movement of the scanning being alone with her I find a model for the variable rate rotation if dx/dt= 2ft per second
Mathematics
1 answer:
sergij07 [2.7K]4 years ago
3 0
Question, i dont understand what you are asking.

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Scores on a recent ACT test yielded mean 20.9 and standard deviation 4.7. find the probability that a random sample of 32 test s
Ivan

Answer:

E. 0.1401

Step-by-step explanation:

The mean here has been given as 20.9

The standard deviation sd = 4.7

Random sample n = 32

Sd/√n

= 4.7/√32

= 0.8309

Probability of x less than 20

= 20-20.9/0.8309

= -0.9/0.8309

= -1.083

P(z<-1.083)

When we go to the z table

= 0.1401

Therefore the probability is 0.1401 and the answer to this question is E.

6 0
3 years ago
In parallelogram ABCD, AC=87.5 and BC=52.5. If ABCD is a rectangle, find AB.
igor_vitrenko [27]
We can do this using Pythagorus,,,
87.5*2 - 52.5*2 = AB*2
4900 = AB*2
70 = AB
3 0
3 years ago
5/6 of ______= 35 brainly
antiseptic1488 [7]

Answer: 42

Step-by-step explanation: 35 divided by 5=7 so 35+7=42

7 0
3 years ago
Draw a square that is not a quadrilateral
nalin [4]
This is impossible by definition both need four sides so 
8 0
3 years ago
Solve.<br> 4(y + 4) = 32
MakcuM [25]

Answer:

y = 4

Step-by-step explanation:

4*y = 4y

4*4 = 16

4y+16=32

to get 4y alone, we subtract 16 from 32.

32-16 = 16

4y = 16

to get y alone, we divide 4 by 16

16/ 4 = 4

so, y = 4

8 0
3 years ago
Read 2 more answers
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