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Vesna [10]
3 years ago
9

After traveling steadily at 400 meters above a shipwrecked hull, a submerged vessel starts to descend when its ground distance

Mathematics
2 answers:
Minchanka [31]3 years ago
5 0

Answer:

im trying to find this answer too dont worry :(

Step-by-step explanation:

I dont know

mash [69]3 years ago
3 0

Answer:

Option B, 3.27

Step-by-step explanation:

Given -

The submerged vessel travel horizontal distance above the shipwrecked hull

= 400

= 0.4 kilometers

The vertical distance from the the shipwrecked hull to the ground is equal to 7 kilometers

There forms a right angled triangle with

Base = 7 kilometer

Perpendicular = 0.4 kilometer

Tan (angle) = \frac{Perpendicular}{Base}

Substituting the given values we get -

Angle of depression

= tan^{-1}(\frac{0.4}{7})\\= 3.27

Hence, option B is correct.

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Translating verbal sentences: 16 decreased by a number is 27
Julli [10]
16 - x = 27
x = -11



16 - x = 27

16 = 27 + x

16 - 27 = x

-11 = x
4 0
3 years ago
A sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's p
charle [14.2K]

Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

n=1800\\\\p_1=53\%=0.53\\\\p_2=54\%=0.54\\

We calculate the standar deviation:

\sigma=\sqrt{\frac{0.53 \cdot (1-0.53)}{n}}=\sqrt{\frac{0.53 \cdot 0.47}{1800}}=0.01176

We calculate the value of the test statistic:

z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85

So the value of the test statistic is -0.85.

5 0
3 years ago
Pls help me!! thank you!!
klasskru [66]

Full working out shown from step 1 to last.

follow it and you get 24 square feet as final answer. Good luck in other questions!!!

3 0
3 years ago
What is the volume of a sphere with a radius of 7 cm? Sphere V = 4 3 πr3 1. Substitute the radius into the formula:    V = 4 3 π
netineya [11]

Answer:

1436.75504 or 1372/3π cm^3

Step-by-step explanation:

The volume of a sphere can be found using:

V = 4/3 πr^3

We know the radius is 7, so we can substitute 7 in for r

V = 4/3 π7^3

Evaluate the exponent

V = 4/3 π 343

If we want the answer in terms of pi, multiply the two other numbers, that are not pi: 4/3 and 343.

v= (4/3*343)π

v=1372/3π

If we want an exact answer, multiply 1372/3 and pi

v=1436.75504

So, the volume is 1436.75504 or 1372/3 π cm^3

4 0
3 years ago
Read 2 more answers
A plumber charges $25 for a service call plus $50 per hour of service. Write an equation in slope-intercept form for the cost, C
Alex787 [66]

C= 25$ + 50$ * h

8 hours 425$

10 hours 525$

4 0
3 years ago
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