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puteri [66]
2 years ago
15

PLEASE ANSWER!!! First answer gets brainliest!!!!! RIGHT ANSWERS ONLY!

Mathematics
1 answer:
hammer [34]2 years ago
6 0
AD = √(AB^2+BC^2+CD^2)

AD = √(12^2+9^2+10^2)

AD = √(144+81+100)

AD = √325

AD = 18.02 = 18

ANSWER:

F. 18 feet
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A helium-filled blimp stays aloft since helium is less dense than regular air, so helium will rise above regular
worty [1.4K]

Answer:

The blimp can carry 70 passengers

Step-by-step explanation:

Lets use the ratio method to solve this problem

∵ 1 cubic meter of helium  can lift about 1.1 kg

∵ A blimp can carry as much as 2 x 10^{5} m³ of helium

By using the ratio method

→  m³         :  kg

→  1            :  1.1

→  2 x 10^{5}   :  x

By using cross multiplication

∴ x × 1 = 1.1 × 2 x 10^{5}

∴ x = 2.2 x 10^{5}

∵ x represents the mass that can carried by the helium

∴  2 x 10^{5} m³ of helium can lift 2.2 x 10^{5} kg

∵ The mass of the blimp is 2.13 x 10^{5} kg

- Subtract the mass of the blimp from the mass that the given

    amount of helium can lift to find the mass of the passengers

∴ The mass of the passengers = 2.2 x 10^{5} - 2.13 x 10^{5}

- Subtract 2.13 from 2.2 ⇒ 2.2 - 2.13 = 0.07

∴ The mass of the passengers = 0.07 x 10^{5}

∵ The average mass of a person with luggage is 10² kg

- Divide the mass of the passengers by the mass of the person

   to find the number of the passengers

∴ The number of passengers = 0.07 x 10^{5} ÷ 10²

- Subtract the exponents of 10 to find the answer

∵ 10^{5} ÷ 10² = 10^{5-2} = 10³

∴ The number of passengers = 0.07 x 10³

∴ The number of passengers = 0.07 × 1000

∴ The number of passengers = 70

The blimp can carry 70 passengers

3 0
3 years ago
The widths, in millimeters, of fabric produced at a ribbon factory are collected. The mean in approximately 23 millimeters and t
enyata [817]

Answer:

Kindly check explanation

Step-by-step explanation:

Given that:

Mean width of fabric = 23 millimeters

Standard deviation = 0.06 millimeters

The mean width of fabric specified a ove represents the average length of the width of all fabrics being produced in the factory. The mean width could have been obtained by taking the average of the width length of all fabrics produced in the factory. This means that not all fabrics have a width of 23 millimeters but the average width length of all fabrics produced is 23 millimeters.

Since all fabrics do not have the same width length, the standard deviation helps us determine how dispersed or spread out the different widths of fabrics are from the mean value. With a low standard deviation value of 0.06 millimeters, it shows that the various widths of fabric are closer to mean value.

7 0
2 years ago
Joel walked 112 km to college, 114 km to the mall, and 224 km back home. What was the total distance covered by Joel? Express yo
bagirrra123 [75]

Answer: 450

Step-by-step explanation:

112+114+226

226+224=450

4 0
2 years ago
Apply the distributive property to simplify -1/3 (12+30)
coldgirl [10]

Answer:

- 13

Step-by-step explanation: C

3 0
2 years ago
A hummingbird movies its wings at a rate of 4800 wing beat a minute. write this rate in wingbeats per second
RSB [31]

Answer:

80

Step-by-step explanation:

There are 60 seconds in a minute.

So, we divide how many beats per minute by the seconds.

4800/60 = 80

So the hummingbird moves his wings at a rate of 80 won't beats a second.

Hope this helps you out! : )

8 0
3 years ago
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