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pochemuha
3 years ago
5

A block of iron has a mass of 3152 kg and a volume of 0.4 m².Calculate the density of the block of iron, in kg/m3.

Mathematics
1 answer:
Lisa [10]3 years ago
6 0

The density of the block of iron in kg/m^3 is equal to 7,880.

<u>Given the following data:</u>

  • Mass of block = 3152 kg
  • Volume of block = 0.4 m^2

To calculate the density of the block of iron in kg/m^3:

<h3>What is density?</h3>

Density can be defined as mass all over the volume of an object or body. Thus, density is equal to mass per unit volume of an object.

<h3>How to calculate density</h3>

Mathematically, the density of a substance is given by this formula;

Density =\frac{Mass}{Volume}

Substituting the parameters into the formula, we have;

Density=\frac{3152}{0.4}

Density = 7,880  kg/m^3

Read more on density here: brainly.com/question/13833323

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Roman is born in the year 123 BC and dies at the age of 74 years. Use a negative number to express the year in which he dies
Stells [14]

Answer:

-49 or 49 BC

hope that this helps

7 0
3 years ago
I can’t figure out how to use the zeros in the polynomial. Please explain
Temka [501]

Answer:

a) P (x) = (x + 3) (x-1) (x-4)

b) P (x) = (2x + 5) (5x - 4) (x-6)

c) P (x) = (x-3) (x-1) (x-4) (x + 1) ^ 2

Step-by-step explanation:

<u>For the question a *</u> you need to find a polynomial of degree 3 with zeros in -3, 1 and 4.

This means that the polynomial P(x) must be zero when x = -3, x = 1 and x = 4.

Then write the polynomial in factored form.

P (x) = (x + 3) (x-1) (x-4)

Note that this polynomial has degree 3 and is zero at x = -3, x = 1 and x = 4.

<u>For question b, do the same procedure</u>.

Degree: 3

Zeros: -5/2, 4/5, 6.

The factors are

x = -\frac{5}{2}\\\\x +\frac{5}{2} = 0\\\\(2x +5) = 0

---------------------------------------

x =\frac{4}{5}\\\\x-\frac{4}{5} = 0\\\\(5x-4) = 0

--------------------------------------

x = 6\\\\(x-6) = 0

--------------------------------------

P (x) = (2x + 5) (5x - 4) (x-6)

<u>Finally for the question c we have</u>

Degree: 5

Zeros: -3, 1, 4, -1

Multiplicity 2 in -1

x = -3\\\\(x-3) = 0

--------------------------------------

x = 1\\\\(x-1) = 0

--------------------------------------

x = 4\\\\(x-4) = 0

----------------------------------------

x = -1\\\\(x + 1) = 0

-----------------------------------------

P (x) = (x-3) (x-1) (x-4) (x + 1) ^ 2

8 0
3 years ago
Seventy concert tickets were sold for $550. each adult ticket cost $9 and each childrens ticket cost $5. find the number of adul
PilotLPTM [1.2K]

Answer:

Total tickets = 70

Total cost = $550

Adult's ticket = $9

Child's ticket = $5

Difference = 9 - 5 = $4

Assume all 70 are child's tickets

5 x 70 = 350

But the total cost was 550

550 - 350 = $200

The $200 must have come from Adult's tickets, which has a difference of $4.

200 ÷ 4 = 50

So there are 50 adult's tickets.

70 - 50 = 20

And there are 20 child's tickets.

Hope this helps - Itz.Jordan

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2 years ago
Number of minutes 1 2 3 4 5 6 7 8 9 10
umka21 [38]

Answer: please find the attached file for the graph.

Step-by-step explanation:

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Given that data set above, the time in minutes will be on the x axis while the number of trainees will be in the y axis.

In bar chart, the bars will not touch each other.

Please find the attached file for the solution and figure

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A pack of six cans of coffee cost 12$ . How much would 15 cans of coffee cost
Vera_Pavlovna [14]
$30 because 12/6 = 2 so 15 x 2 = 30
4 0
3 years ago
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