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Setler [38]
4 years ago
9

A hot air balloon holds 3,249 cubic meters of helium. The density of helium is 0.1785 kilograms per cubic meter. How many kilogr

ams of helium does the balloon contain, rounded to the nearest tenth of a kilogram?
1,873.4 kg
2,194.6 kg
2,721.2 kg
579.9 kg
Mathematics
2 answers:
Mnenie [13.5K]4 years ago
7 0

Answer:

D: 579.9 kg

Step-by-step explanation:

3,249 * 0.1785 = m/3,249 * 3,249

professor190 [17]4 years ago
5 0
We find the answer by using the density formula: d  =m/v
We know the density: 0.1785
We know the volume: 3,249
We DO NOT know the mass, so that is what we're trying to finding
0.1785 = m/3,249
Solve:
3,249 * 0.1785 = m/3,249 * 3,249
579.9465 which can be rounded to 579.9
The answer is D. 
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xz_007 [3.2K]

x = the age of Heather

One half of Heather's age two years from now plus one-third of her age three years ago is twenty years

(x + 2)/2 + (x - 3)/3 = 20

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8 0
3 years ago
It costs $5.15 to rent a kayak for 1 hour at a local state park. The price per hour stays the same for up to 5 hours of rental.
iren [92.7K]

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6 0
3 years ago
Consider the function:
aivan3 [116]

Answer:

f(x) = StartLayout enlarged left-brace 1st Row 1st column seven-halves + 2x, 2nd column x less-than-or-equal-to negative 1 2nd row 1st column negative 5 + StartFraction 3 x Over 2 EndFraction, 2nd column Negative 1 less-than x less-than 3 Third row 1st column one-fourth x, 2nd column x greater-than-or-equal-to 3 EndLayout A number line goes from negative 5 to 5.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
I need help with this
Lisa [10]

Answer:

1

Step-by-step explanation:

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3 years ago
In sugar beet, there is 21% of sugar. How much sugar beet do you need in order to get 7,413 tons of sugar?
almond37 [142]

35300 tons of sugar beet we need in order to get 7,413 tons of sugar.

<u>Step-by-step explanation:</u>

Given that  in sugar beet, there is 21% of sugar.  Need to find out how much sugar beet we need in order to get 7,413 tons of sugar. Let we need x tone of sugar beet. So, according to the asked data, we have

                        21 \% \text { of } x=7413

                        \frac{21}{100} \times x=7413

                        0.21 \times x=7413

                        x=\frac{7413}{0.21}

                        x = 35300 tones

4 0
4 years ago
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