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3 years ago

What does P (A U B’) mean?

Mathematics

1 answer:

Savatey [412]3 years ago

8 0

Answer:

It means or stands for the probably that either A or B occurs or both.

Step-by-step explanation:

It really isn't steps to it you just have to learn it.

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What is the least common multiple of 9 3 and 12

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Answer:

Step-by-step explanation:

9 x 4 = 36

3 x 12 = 36

12 x 3 = 36

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Which of the following is a solution of 4x^2=-9x-4

NeTakaya

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(-9+√17)/8

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3 years ago

For f(x) = -4x -9 evaluate for f(6.5)

kolezko [41]

Answer:

f=−35

Step-by-step explanation:

<em>1.Simplify 4×6.5 to 26</em>

f=-26-9

<em>2. Simplify -26-9 to -35</em>

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3 years ago

A motion sensor has a range of 65 meters as shown. The ultrasonic waves sweeping out from the sensor span an angle of 135°.

VMariaS [17]

The approximate area that is within range of the motion sensor is 4975 square meters

<h3>How to determine the area of the range?</h3>

The figure is not given, however the area of the range can be calculated without the figure.

The given parameters are:

Angle, ⊕ = 135°

Radius, r = 65 meters

The area of the range is calculated using the following sector area

$A = \frac{\theta}{360} * \pi r^2$

This gives

$A = \frac{135}{360} * 3.14 * 65^2$

Evaluate

A = 4974.9375

Approximate

A = 4975

Hence, the approximate area that is within range of the motion sensor is 4975 square meters