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1 year ago

Nipa exercises for 225 minutes a week. How many hours does she exercise in a year?

Mathematics

1 answer:

Lena [83]1 year ago

7 0

About 12,000 minutes a year.

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What is 9% of 12.3?????

Zinaida [17]

Answer:

1.10

Step-by-step explanation:

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2 years ago

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The average density of the material in intergalactic space is approximately 2.5 × 10–27 kg/m3. what is the volume of a lead samp

Lesechka [4]

Answer:

e. $1.8\times 10^{-6}m^3$

Step-by-step explanation:

It is given that,

The density of intergalactic space material is $2.5 \times 10^{-27}$ kg per cubic meter.

And the volume of intergalactic space material is $8.0\times 10^{24} m^3$

So the mass of that much intergalactic space material is,

$m= \rho\times v$ , where 'm' is the mass, and 'v' is the volume.

Putting the values we get,

$m=2.5 \times 10^{-27}\times 8.0 \times 10^{24}$

$m=20\times 10^{(-27+24)}=20\times 10^{-3} kg$

It is also given that the mass of lead is the same as the mass of the intergalactic space material. Therefore, the mass of lead is $20 \times 10^{-3}=2 \times 10^{-2}kg$

So the volume of lead is,

$v=\frac{m}{\rho} =\frac{2 \times 10^{-2}}{11300} = 0.00000177 m^3$

$v=1.77 \times 10^{-6}=1.8\times 10^{-6}m^3$

So the volume of lead is $v=1.8\times 10^{-6}m^3$ .

3 0

3 years ago

A bag of gumballs contains 2 pink, 3 orange, 4 blue, 2 red, and 1 yellow

podryga [215]

Answer:

1/4

Step-by-step explanation:

there are 12 gumballs in total

1 yellow + 2 pink = 3 gumballs out of all 12

3 /12 is simplified to 1/4 as both numbers is divisible by 3

8 0

2 years ago

Which two lines are parallel? Explain your reasoning.<br> 1. 5y=2x-5<br> 2. 5y=-4+3x<br> 3. 5y-3x=-1

rodikova [14]

2 and 3 are both parallel because both slopes are m=3/5, which equal slopes-parallel lines

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3 years ago

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Write a story to match the equation x + 2 1 2 = 10 . Explain what x represents in your story. Solve the equation. Explain or sho

lawyer [7]

Answer: x=5

Step-by-step explanation:

If you break the fraction into a whole number it would be 5 and 10 minus 5 is 5. so x=5

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2 years ago