2 years ago

ABC ∆ where Angle A =90° , AB = 12 m, AC = 9 m . Find BC ?

Mathematics

1 answer:

Setler [38]2 years ago

6 0

Answer:

15m

Step-by-step explanation:

Use Pythagoras

Folow the steps in the image

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Moira borrowed $4,500 from her grandfather to pay for her first year of college. Three years later, she repaid the $4,500 along

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Answer: 1.8%

Step-by-step explanation:

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2 years ago

logan has 20 action figures.he is shipping them to a friend.He can only fit 3 action figure in a box.How many boxes will he need

adoni [48]

20/3= 6 2/3
6.66 rounds to 7
7 boxes

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2 years ago

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Milton is floating in an inner tube in a wave pool. He is 1.5 m from the bottom of the pool when he is at the trough of a wave.

posledela

This is the concept of sinusoidal, to solve the question we proceed as follows;
Using the formula;
g(t)=offset+A*sin[(2πt)/T+Delay]
From sinusoidal theory, the time from trough to crest is normally half the period of the wave form. Such that T=2.5
The pick magnitude is given by:
Trough-Crest=
2.1-1.5=0.6 m
amplitude=1/2(Trough-Crest)
=1/2*0.6
=0.3
The offset to the center of the circle is 0.3+1.5=1.8
Since the delay is at -π/2 the wave will start at the trough at [time,t=0]
substituting the above in our formula we get:
g(t)=1.8+(0.3)sin[(2*π*t)/2.5]-π/2]
g(t)=1.8+0.3sin[(0.8πt)/T-π/2]

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2 years ago

For flights from a particular airport in January, there is a 30 percent chance of a flight being delayed because of icy weather.

lyudmila [28]

Answer:

0.335

Step-by-step explanation:

1. There is a 30 percent chance of a flight being delayed because of icy weather ,then the probability of being delayed is 0.3 and of being not delayed is 0.7.

2. If a flight is delayed because of icy weather, there is a 10 percent chance the flight will also be delayed because of a mechanical problem, then the probability of being delayed is 0.1 and the probabilty of not being delayed is 0.9.

3. If a flight is not delayed because of icy weather, there is a 5 percent chance that it will be delayed because of a mechanical problem (MP), then the probability of being delayed is 0.05 and the probabilty of not being delayed is 0.95. (See attached probability tree)

Delayed of icy weather - 0.3

Delayed of MP when weather is not icy - 0.7·0.05=0.035

Now, if one flight is selected at random from the airport in January, the probability that the flight selected will have at least one of the two types of delays is

0.3+0.035=0.335

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2 years ago

Jessie has a deck of 52 regular playing cards and a bag of six marbles. In the bag, there are two blue marbles, three green marb

denpristay [2]

Answer:

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Step-by-step explanation:

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