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3 years ago

11

A submarine is diving to a total depth of 45 feet. It descends 15% of the total depth in 1 minute. How deep will the submarine b

e after 4 minutes? (5 points)
−6.75 feet −27 feet −13.5 feet −20.25 feet

1 answer:

telo118 [61]3 years ago

8 0

after 4 mins the sub reaches 27 feet

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A person is strolling along a moving walkway at a constant velocity of +1.00 m/s with respect to the walkway, which moves at a c

Bezzdna [24]

Refer to the diagram shown below.

The velocity of the person on the walkway relative to the ground is the velocity of the walkway (relative to the ground) plus the velocity of the person relative to the walkway.
It is
1.0 + 0.5 = 1.5 m/s

The person on the ground moves at - 0.2 m/s, which is in the opposite direction to that of the walkway and the person on the walkway.
Therefore the velocity of the person on the walkway relative to the person on the ground is
105 - (-0.2) = 1.7 m/s

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3 years ago

Of 500 dogs at a dog show, 30% are male. 2/5 of the male dogs are over the age of 3. How many dogs are male and over 3 years?

marta [7]

Answer: 60 dogs are male and over 3 years out of total 150 male dogs.

Step-by-step explanation:

Total no. of dogs are 500

Males are 500 x 0.3 = 150

Over 3 years are 150 x 2/5 = 60

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3 years ago

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Q8: These Triangles are similar. What is the value of X?

Umnica [9.8K]

Answer:

The answer to your question is x = 15

Step-by-step explanation:

Use proportions to solve this problem

$\frac{x}{20} = \frac{12}{16}$

Solve for "x"

x = $\frac{12(20)}{16}$

Simplification

x = $\frac{240}{16}$

Result

x = 15

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3 years ago

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Answer:

2

Step-by-step explanation:

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Problem is in the attached image. Thanks in advance!

lutik1710 [3]

Answer: it will take 2.5 hours for both people to meet after person B leaves.

Step-by-step explanation:

The distance between the house of person A and his cousin's house is 234 miles.

At the point where they meet, they would have travelled 234 miles.

Person A travelled at an average speed of 44 miles per hour.

Let t represent the time spent by Person A in travelling from his house to the point where they meet.

Distance = speed × time

Distance covered by person A would be

44 × t = 44t

One and half hours later, person B leaves his house to visit person A, travelling at an average speed of 62 miles per hour. This means that total time spent by person B in travelling to the point where they meet is (t - 0.5) hours. Distance covered would be

62(t - 0.5) = 62t - 31

Since the total distance covered is 234 miles, then

44t + 62t - 31 = 234

106t = 234 + 31 = 265

t = 265/106 = 2.5 hours

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3 years ago