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monitta
3 years ago
12

Need help on this for brainliest

Mathematics
1 answer:
Arisa [49]3 years ago
7 0

Answer:

Your answer is letter d

Step-by-step explanation:

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The formula for the perimeter of a rectangle can be written as P= 2(l+w). Solve the formula for the length l.
Ronch [10]

Undo what is done to l. l has w added and the sum multiplied by 2, so divide by 2 and subtract w:

... l = P/2 -w

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The nature park has a pride of 7 lions and 9 cubs. The adults eat 9 pounds of meat each day and the cubs eat 4 pounds. Simplify
Blizzard [7]

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the answer to that question is 99

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if the measure of the third angle of the triangle is 20 more than three times the measure of either of the other two angles, fin
valentina_108 [34]
You should multiply  20 time 8 to get your answer
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A firework is launched from the ground at a velocity of 180 feet per second. its height after t (t is variable) seconds is given
VMariaS [17]

-16t² + 180t

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3 years ago
Military radar and missile detection systems are designed to warn a country of enemy attacks. A reliability question deals with
Nadusha1986 [10]

Answer:

Step-by-step explanation:

Given that a particular detection system has a 0.83 probability of detecting a missile attack.

Also each system is independent of the other to detect missile attack.

a)  the probability that a single detection system will detect an attack=0.83

b) the probability that at least one of the systems will detect the attack given two systems= 1-Prob no system detects

=1-(1-0.83)(1-0.83)\\\\=1-0.0289\\=0.9711

c)  If three systems are installed,  the probability that at least one of the systems  will detect the attack

= 1- none of the three systems detect attack

= (1-0.17^3)\\=1-0.004913\\=0.995087

d) We find that probability of detecting is more if we increase the system form 1 to 2 and 2 to 3.

Hence for safety and defence purpose multiple detection system is recommended.

7 0
3 years ago
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