All categories

3 years ago

An object has a mass of 20 g and a volume of 5 cm3. what is the object's density?

Mathematics

2 answers:

andriy [413]3 years ago

6 0

Answer: $4\ g/cm^3$

Step-by-step explanation:

The formula to find the density is given by :-

$\text{Density}=\dfrac{\text{Mass}}{\text{Volume}}$

Given : Mass of a n object= 20 g

Volume of object = $5\ cm^3$

Then the object's density will be :_

$\text{Density}=\dfrac{20}{5}\\\\\Rightarrow\ \text{Density}=4\ g/cm^3$

Hence, the object's density - $4\ g/cm^3$

koban [17]3 years ago

5 0

Density = mass / volume

density = 20/5 = 4 g/cm^3

You might be interested in

george has 6 cups of tamato sause he needs 3/4 of the sause to make lasagna wich best describes how much sause will George use

Kay [80]

Tomato = 6
lasagna = 3/4tomato
= 4 cups 1/2

4 0

3 years ago

For what value of c is the relation a function? {(2.8). (12.3).(c.4), (-1.8). (0.3}}

raketka [301]

Answer: B) 1

=======================================================

Explanation:

I'm assuming you were given the list of points to be

{(2,8). (12,3).(c,4), (-1,8). (0,3}}

the x coordinates of each point are: 2, 12, c, -1 and 0

If c is equal to any of the other x coordinates (2, 12, -1, or 0), then this will mean we have a repeated x coordinate. In turn, this leads to us not having a function.

---------

Consider the case that c = 2.

This means that (2,8) and (2,4) are two points in this relation. The input x = 2 leads to multiple outputs y = 8 and y = 4 at the same time. A function is not possible here. A function is only possible if we have any given input lead to exactly one output only. So this is why c = 2 is not possible if we want a function. The same goes for the other x coordinates mentioned.

All of this means we can rule out choices A, C, and D

Choice B means that c = 1 and this x coordinate hasn't been mentioned yet. So this could be a value of c that leads to a function. This is why choice B is the final answer.

3 0

2 years ago

Isabella is getting older and feels like she should donate her collection of stuffed animals to children who are less fortunate.

Studentka2010 [4]

Answer:

well for the cats she can do 3 for each and dogs 2 for each

3 0

2 years ago

What is the length of BC in the right triangle below?

gayaneshka [121]

Hey there! :)

Answer:

C. BC = 39 units.

Step-by-step explanation:

Use the Pythagorean theorem to solve for BC. Let BC = c, AB = a, and AC = b.

c² = a² + b²

c² = 15² + 36²

Square and simplify:

c² = 225 + 1296

c² = 1521

c = √1521

c = 39 units.

Therefore:

BC = 39 units.

5 0

3 years ago

Read 2 more answers

Pleaseeeee help me. i really need it.

deff fn [24]

comparing the relation given

thus y= -2x +1 to the general equation of a line

where y= mx + c

where m is the gradient and c is the intercept on the y-axis.

from the question, the gradient is -2 and since the line is perpendicular, the gradient is given as

$\frac{ - 1}{m}$

so substituting the value of m in to the equation

$\frac{ - 1}{ - 2}$

$\frac{1}{2}$

as the gradient

equation of line is given by

y - y1 = m( x-x1)

from the question y1= -2 and x1=1

substitute them

y-(-2) = 1/2 (x -1)

y+2 =1/2 (x-1)

multiplying through by 2

2 (y+2) = x-1

2y +4 = x-1

2y =x-1-4

2y =x-5

x -2y -5 = 0

therefore the equation for the line is x-2y -5=0

7 0

3 years ago