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mrs_skeptik [129]
2 years ago
10

hat is the mean of the numbers given below? 2, 2, 8, 10, 15, 30, 36, 40, 50, 51 Report your answer in decimal form.​

Mathematics
2 answers:
Sphinxa [80]2 years ago
7 0

Answer:

Mean = average or the sum of all numbers divided by how many numbers there are.

2 + 2 + 8 + 10 + 15 + 30 + 36 + 40 + 50 + 51 = 244

244/10 = 24.4

trapecia [35]2 years ago
5 0

Answer:

24.4

Step-by-step explanation:

Add all numbers together To get 244

Then divide by the number of numbers given (10)

244÷10 = 24.4

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Square root of 81 minus square root of negative 48 answer in a + bi form
galina1969 [7]

Answer:

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Step-by-step explanation:

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A snail moved 375 centimeters in 5 hours. How fast was the snail moving? Solve for speed.
ivann1987 [24]

Answer: 75 cm per hour

Step-by-step explanation:

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The height of a stuntperson jumping off a building that is 20 m high is modeled by the equation h = 20 -57, where t is the time
cupoosta [38]

A stuntman jumping off a 20-m-high building is modeled by the equation h = 20 – 5t2, where t is the time in seconds. A high-speed camera is ready to film him between 15 m and 10 m above the ground. For which interval of time should the camera film him?

Answer:

1\leq t\geq \sqrt{2}

Step-by-step explanation:

Given:

A stuntman jumping off a 20-m-high building is modeled by the equation

h =20-5t^{2}-----------(1)

A high-speed camera is ready to making film between 15 m and 10 m above the ground

when the stuntman is 15m above the ground.

height h = 15m  

Put height value in equation 1

15 =20-5t^{2}

5t^{2} =20-15

5t^{2} =5

t^{2} =1

t =\pm1

We know that the time is always positive, therefore t=1

when the stuntman is 10m above the ground.

height h = 10m  

Put height value in equation 1

10 =20-5t^{2}

5t^{2} =20-10

5t^{2} =10

t^{2} =\frac{10}{5}

t^{2} =2

t=\pm\sqrt{2}

t=\sqrt{2}

Therefore ,time interval of camera film him is 1\leq t\geq \sqrt{2}

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Andre45 [30]

Answer:

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Step-by-step explanation:

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klasskru [66]
45-38= 7min decrease
(7/45)* 100=15.5%
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