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miv72 [106K]
2 years ago
13

Josiah has a mass of 75 kg and wants to know how many helium-filled balloons it would take to fly. The density of helium is abou

t 1 kg/m^3 less than regular air, which means a cubic meter of helium can lift about 1 kg. Fully inflated, a balloon has a diameter of 0.3 m and can be modeled as a sphere. He neglects the mass of the balloon in his calculations.
About how many balloons would it take to lift Josiah?
A. 660 Balloons
B. 1120 Balloons
C. 4750 Balloons
D. 5310 Balloons
Mathematics
1 answer:
sasho [114]2 years ago
4 0

Answer:

d-5310

Step-by-step explanation:

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Wyatt is training for a race. He will run 3/4 of a mile a day for 8 days. How far will Wyatt run altogether?
Natasha2012 [34]

Answer:

6 miles

Step-by-step explanation:

3/4 x 8

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8 0
3 years ago
What is the value of the underline digit 56.123 1 is underlined.A.ten B.one C.one-tenth D.one-hundredth ? Not sure if it is ten
Triss [41]
1 is in the one-tenths place. If 2 was in this spot, it would be two-tenths.

Here are the place values for the question's given number of 56.123.

5- tens
6- ones
decimal
1- tenths
2- hundredths
3- thousandths

ANSWER:
1 has the place value of C) one-tenth

Hope this helps! :)
6 0
2 years ago
Read 2 more answers
Question is attached
Arlecino [84]

Answer:

Let v = ml of 100% vinegar

Then 150-v = ml of dressing

v  + .05(150-v) = .24(150)

v + 7.5 - .05v = 36

.95v = 28.5

v = 28.5/.95

v = 30 ml of vinegar

dressing = 150-30 = 120 ml

Step-by-step explanation:

7 0
2 years ago
Please help thanks!!!
tankabanditka [31]

Answer:

30 or 780 is your answer for the first one. i dont know how to work out the answer for the 2 one im sorry :(

Step-by-step explanation:

13+12+5 = 30

13 x 12 x 5 = 780

I would go for 780

it seems more like to be the answer

5 0
3 years ago
the probability of winning a game is 20%. if you play 20 times how many times should you expect to win
julia-pushkina [17]
The probability of winning a game out of 20 is 4 times. 
6 0
3 years ago
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