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3 years ago

550 calories in a 100 gram bar of chocolate. Write this rate as a simplified fraction

Mathematics

1 answer:

posledela3 years ago

8 0

550 calories/ 100 grams
550/100= 55/10
55/10= 11/2
Final answer: 11 calories/2grams

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If 2.5 mol of dust particles were laid end to end along the equator, how many times would they encircle the planet? The circumfe

Natalka [10]

Answer:

They encircle the planet $3.76\times 10^{11}$ times.

Step-by-step explanation:

Consider the provided information.

We have 2.5 mole of dust particles and the Avogadro's number is $6.022\times 10^{23}$

Thus, the number of dust particles is:

$2.5\times 6.022\times 10^{23}=15.055\times 10^{23}$

Diameter of a dust particles is 10μm and the circumference of earth is 40,076 km.

Convert the measurement in meters.

Diameter: $10\mu m\times \frac{10^{-6}m}{\mu m} =10^{-5}m$

If we line up the particles the distance they could cover is:

$15.055\times 10^{23}\times 10^{-5}=15.055\times 10^{18}=1.5055\times 10^{19}$

Circumference in meters:

$40,076km\times \frac{1000m}{1km}=40,076,000 m$

Therefore,

$\frac{1.5055\times 10^{19}}{40,076,000} = 3.76\times 10^{11}$

Hence, they encircle the planet $3.76\times 10^{11}$ times.

8 0

3 years ago

On the first day of ticket sales the school sold 1 senior citizen ticket and 5 child tickets for a total of $60. The school took

Stells [14]

Answer:

Step-by-step explanation:

Let's start off with the first equation

5x + y = 60

We need to find what X and Y are.

Let's try subtracting a few numbers from 60.

Let's do 60 - 55 = 5

11x5 = 55

11 = Children Ticket Cost

5 = Seniors Ticket Cost

Without them being the same price!

So using the numbers we found, we can now solve the second one

14x5 = 70

11x11 = 121

70 + 121 = 191

There we go!

Hope this helped! Please give brainiest if you can :)

3 0

3 years ago

Read 2 more answers

Help! I am trying to Simplify: 5√24

12345 [234]

Answer:

this might help better

Step-by-step explanation:

5√24

=10√6(Decimal: 24.494897)

4 0

3 years ago

17.253 to the nearest tenth

Vlad1618 [11]

Answer:

17.3

Step-by-step explanation:

tens ones. tenths hundredths thousandths

1 7 . 2 5 3

We are rounding to the nearest tenth

We are rounding the 2 so we look at the 5. If it is 5 or above we round up.

Since it is, we will round the 2 to a 3

17.3

7 0

3 years ago

Read 2 more answers

Determine the domain of the function, and then graph it.

Tomtit [17]

First set change the function f(x) to y so
that it would be
$y = \sqrt{x + 4} - 1$
Then set y = 0
$0 = \sqrt{x + 4} - 1$
Then solve for x

X = - 3

To graph it, just plot the point (-3,0) on the x-axis

6 0

3 years ago