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Leokris
1 month ago
10

A 1500 kg hippo is completely submerged, standing on the bottom of a lake. What is the approximate value of the upward normal fo

rce on the hippo?
Mathematics
1 answer:
zzz [12.3K]1 month ago
7 0

Answer:

Aproximadamente 428 N

Step-by-step explanation:

Peso = 1,500 * 9.8 = 14,700 N

Densidad = Masa ÷ Volumen

1,030 = 1,500 ÷ V

V = 1,500 ÷ 1,030 = 1.46 m^3.

La fuerza de flotación = Densidad * g * V

La fuerza de flotación = 1,000 * 9.8 * (1,500 ÷ 1,030)

La fuerza de flotación = 9,800 * (1,500 ÷ 1,030) = 14,272 N.

La fuerza neta = 14,700 – [(9,800 * (1,500 ÷ 1,030)]

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The equation r = 6t gives the number of albums released, r, by a record label over time in years, t. If you graph this relations
PIT_PIT [12445]
Options:
(7, 44)
(8, 48)
(9, 52)
(12, 74)
<span>(13, 78)

r = 6t 
(7,44): r = 6(7) = 42 is incorrect 
(8,48): r = 6(8) = 48 is the CORRECT answer
(9,52): r = 6(9) = 54 is incorrect
(12,74): r = 6(12) = 72 is incorrect
(13,78): r = 6(13) = 78 is the CORRECT answer

The coordinates on the line produced are (8,48) and (13,78)</span>
4 0
1 month ago
Read 2 more answers
The probability that a randomly selected person has high blood pressure (the event H) is P(H) = 0.3 and the probability that a r
Svet_ta [12734]

Answer:

The likelihood of selecting an individual with high blood pressure who is also a runner is 2/3.

Step-by-step explanation:

Based on the data provided:

P( Choosing someone with high blood pressure )  =  0.3

or stated as P(H)  = 0.3

P( Choosing a runner )  =  0.4

or stated as P(R)  = 0.4

Now, P( Selecting a person with high blood pressure as well as being a runner)  = 0.2

⇒ P(H∩ R)  = 0.2

Next, we want to calculate the P(the selected individual is a runner, given they have high blood pressure)

which means we need to determine: P(R/H)

Using BAYES THEOREM:

P(R/H) = \frac{P(R\cap H)}{P(H)}

\implies P(R/H) = \frac{0.2}{0.3 } = \frac{2}{3}

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4 0
1 month ago
Alma is estimating the proportion of students in her school district who, in the past month, read at least 1 book. From a random
zzz [12365]

Answer:

0.64 ± 0.1117 or

0.64\pm 1.645*\sqrt{\frac{0.64*(0.36)}{50}}

Step-by-step explanation:

Sample size (n) = 50

Z-score for a 90% confidence level (z) = 1.645

Proportion of students who read at least one book (p):

p=\frac{32}{50}=0.64

The confidence interval is calculated as:

p\pm z*\sqrt{\frac{p*(1-p)}{n} }

By applying the provided information:

0.64\pm 1.645*\sqrt{\frac{0.64*(1-0.64)}{50}}\\ 0.64\pm 0.1117

The confidence interval results in 0.64 ± 0.1117

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1 month ago
An object is traveling at a steady speed of 8 2/3 miles per hour. How long will it take the object to travel to 5 1/5 miles
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Duration = distance ÷ velocity
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duration = (26/5) ÷ (26/3)
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5 0
1 month ago
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Write a rule that would allow you to test whether (x,y) is on line ℓ.
lawyer [12517]

Response:

We define a line L.

In a two-dimensional space, a line can be expressed as follows:

y = a*x + b

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To determine the slope for a line passing through points (x1, y1) and (x2, y2), the formula is:

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Using one of these points will help to find the value of 'b'.

Once we have the line's equation:

y = a*x + b

we can substitute in a specific point (x, y)

to verify if the equation holds true. If it does, that point lies on the line L.

6 0
16 days ago
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