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3 years ago

Please help with this question!!!!!! I am very Confused and please explain!!!

Mathematics

2 answers:

Brut [27]3 years ago

8 0

The sub dives 37 feet....thats -37...it rises 16 ft....-37 + 16 = -21...then dives 18 ft.....-21 - 18 = - 39 ft

so the net change is -39 ft

Rom4ik [11]3 years ago

4 0

Yeah texaschic is 100% correct

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Square root negative 50

Mama L [17]

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3 years ago

Spaceship Earth, a spherical attraction at Walt Disney World’s Epcot Center, has a diameter of 50 meters. Find the surface area

Black_prince [1.1K]

The surface area of Spaceship Earth is: 7850 m^2

Step-by-step explanation:

Given

Diameter of spherical structure = d = 50 meters

As the attraction is in the form of a sphere, its radius will be used to find the surface area.

$Radius = r = \frac{d}{2} = \frac{50}{2} = 25\ m$

The formula for surface area of sphere is:

$SA = 4\pi r^2\\= 4 * 3.14 * (25)^2\\= 4*3.14*625\\=7850\ m^2$

The surface area of Spaceship Earth is: 7850 m^2

Keywords: surface area, sphere

Learn more about surface area about:

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4 years ago

What is the answer to this?

suter [353]

Answer:unpredictable

Step-by-step explanation:

8 0

3 years ago

Is 4+(3×y) (4+3)×y equivalent or 10-(6÷y) (10-6)÷y

Daniel [21]

They don't seem equivalent, the first set yields 4+3xy and 7xy. The second set yields 10-(6/y) and 4/y. R u sure u typed in the question correctly?

7 0

3 years ago

A 10 bit string is to be randomly picked from all possible 10 bit strings. What is the probability that you picked a string with

allochka39001 [22]

Answer: 0.9990

Step-by-step explanation:

Given : The number of bits in a string = 10

The value taken by a bit is either 0 or 1.

Therefore, the probability that the bit is zero = $\dfrac{1}{2}=0.5$

Binomial probability distribution formula :-

$P(x)=^nC_xp^x(1-p)^{n-x}$ , where P(x) is the probability of getting success in x trials , n is the total number of success and p is the probability of getting success in each trial.

Now, the probability that you picked a string with at least one zero is given by :-

$P(x\geq1)=1-P(z$

Hence, the probability that you picked a string with at least one zero = 0.9990

4 0

3 years ago