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oksano4ka [1.4K]
3 years ago
13

Correct answers only please!

Mathematics
1 answer:
DENIUS [597]3 years ago
8 0

Answer:  D) 43.1

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

\dfrac{\text{Volume of box }}{ \text{ number of apples}}\\\\\\\dfrac{20\ in\times 13\ in\times 12\ in}{72\ apples}=43.3\ in^3\ per\ apple\\\\\\\dfrac{12\ in\times 12\ in\times 12\ in}{40\ apples}=43.2\ in^3\ per\ apple\\\\\\\\\dfrac{20\ in\times 10\ in\times 6\ in}{28\ apples}=42.9\ in^3\ per\ apple

Now find the average:

\dfrac{43.3+43.2+42.9}{3}\quad =43.1

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Pls help me with my maths
diamong [38]

Answer:

58 cm

Step-by-step explanation:

10+19+10+19

5 0
3 years ago
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Wendy can ride her bike 0.8 miles in 6 minutes how many miles can she ride her bike in 2.5 hours
Minchanka [31]

Answer:

20 miles

Step-by-step explanation:

Set up a proportion...

0.8 miles is to x miles as 6 mins is to 2.5 hours

*You need to convert 2.5 hours into minutes first, since the first part is in minutes.  There are 60 minutes in an hour, so there are 60(2.5) = 150 minutes in 2.5 hours

0.8/x = 6/150

Now solve for x by cross multiplying...

0.8(150) = 6x

    120 = 6x

       20 = x

She can ride 20 miles in 2.5 hours

7 0
3 years ago
Dimensional Analysis
AlladinOne [14]

A kilogram of silver contains 5.58×10²⁴ atoms.

<h3>How to determine the parameter</h3>

From the question given above, the following data were obtained:

  • 1 mole of silver = 107.9 g
  • Number of atoms in 1 mole of silver = 6.02×10²³ atoms.
  • Number of atoms in a kilogram of silver is unknown

Now, we shall convert 1 kg of silver to grams (g).

This can be obtained as follow:

1 kg = 1000g

Therefore, 1 kg of silver is equivalent to 1000g.

Now, let's determine the number of atoms in 1 kg (i.e 1000 g) of silver as follow:

If 107.9 g of silver contains 6.02×10²³ atoms.

Then, 1000 g of silver will contain:

= (1000 × 6.02×10²³) / 107.9

= 5.58×10²⁴ atoms.

Thus, a kilogram of silver contains 5.58×10²⁴ atoms.

Learn more about atoms here:

brainly.com/question/6258301

#SPJ1

8 0
1 year ago
Simplify 5^4/5. ~Please Hurry !!
lisov135 [29]

Answer:

125

Step-by-step explanation:

6 0
3 years ago
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A 25-foot long ladder is propped against a wall at an angle of 18° with the wall. how high up the wall does the ladder reach? ro
Alecsey [184]

Answer

Find out the how high up the wall does the ladder reach .

To proof

let us assume that the height of the wall be x .

As given

A 25-foot long ladder is propped against a wall at an angle of 18° .

as shown in the diagram given below

By using the trignometric identity

cos\theta = \frac{Base}{Hypotenuse}

now

\theta = 18^{\circ}

Base = wall height = x

Hypotenuse = 25 foot

Put in the trignometric identity

cos18^{\circ} = \frac{x}{25}

cos18^{\circ} = \bar{0.9510565162}

x = 23.8 foot ( approx)

Therefore the height of the  ladder be 23.8 foot ( approx) .

8 0
3 years ago
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