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Brilliant_brown [7]

2 years ago

6

A passenger on a ship dropped his camera into the ocean. If it is descending at a rate of -4.2 meters per second, how long (in s

econds) until it hits the bottom of the ocean, which is at -1875 meters? Round to the nearest second.

1 answer:

Bezzdna [24]2 years ago

8 0

It would take 446 seconds

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5 roses cost $55. What will 4 roses cost?

kodGreya [7K]

Divide 55 by 5. get 11 times that by 4. you're welcome

3 0

2 years ago

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cate and elena were playing a card game the stack of cards in the middle had 24 cards in it to begin wiht. Cate added 8 cards to

Kaylis [27]

24+8 = 30

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3 years ago

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A simple random sample of size n equals 200 individuals who are currently employed is asked if they work at home at least once p

____ [38]

Answer: 99% of confidence interval for the population proportion of employed individuals who work at home at-least once per week

//0.20113,0.20887[/tex]

Step-by-step explanation:

<u>step 1:-</u>

Given sample size n=200

of the 200 employed individuals surveyed 41 responded that they did work at home at least once per week

Population proportion of employed individuals who work at home at least once per week P = $\frac{x}{n} =\frac{41}{200} =0.205$

Q=1-P= 1-0.205 = 0.705

<u>step 2:-</u>

Now $\sqrt{\frac{P Q}{n} } =\sqrt{\frac{(0.205)(0.705)}{200} }$

=0.0015

<u>step 3:-</u>

<u>Confidence intervals</u>

<u>using formula</u>

$(P - Z_∝} \sqrt{\frac{P Q}{n},} (P + Z_∝} \sqrt{\frac{P Q}{n},$

$(0.205-2.58(0.0015),0.205+2.58(0.0015)\\0.20113,0.20887$

=0.20113,0.20887[/tex]

<u>conclusion:</u>-

99% of confidence interval for the population proportion of employed individuals who work at home at-least once per week

//0.20113,0.20887[/tex]

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3 years ago

Solve for x 2cos^2x-3cosx+1=0

marishachu [46]

<span> x= Pi, x = 2pi/3, x = 4pi/3
That is the answer</span>

8 0

2 years ago

A car was Skid to a half a uniform rate of -9.4 m/s ^2 squared if the measure skid marks that are 34 m long with what speed is t

babymother [125]

Answer:

vi = 25.28 m/s

Step-by-step explanation:

a = -9.4 m/s²

x = 34 m

vf = 0 m/s

vi = ?

We can apply the equation

vf² = vi² + 2*a*x

⇒ vi = √(vf² - 2*a*x)

⇒ vi = √((0 m/s)² - 2*(-9.4 m/s²)*34 m)

⇒ vi = 25.28 m/s

5 0

2 years ago