3 years ago

What is the density of an object with a mass of 86.8g and volume of 6.2cm cubed.

1 answer:

6 0

Density = mass
 volume

mass = 86.8 g volume = 6.2 cm³

Density = 86.8 g
 6.2 cm³

Density = 14 g/cm³

You might be interested in

A pack of 5 book costs $18.75. A pack of 3 books $12.75. Which pack has the the lowest cost per books (hint - find the unit rate

vredina [299]

18.75÷5=3.75
12.75÷3=4.2
The pack of 5 books has the lower cost per book

4 0

3 years ago

Dave uses the functionP(d) = 20d - 20 to calculate the net profit of his dog walking business. Where P(d) is the net profit in d

Lelechka [254]

When Dave walks three dogs he will earn a net profit of 40 dollars.

3 0

3 years ago

I need help solving this problem. <img src="https://tex.z-dn.net/?f=4x%20cos%20%5E%7B-1%7D%20%282x%2B4%29-%20%5Csqrt%7B3-3%20x%5

Gnesinka [82]

Given:
$f(x)=4xcos^{-1}(2x+4)-\sqrt{3-3x^2}$

Using
$\frac{d}{dx}cos^{-1}(x)=-\frac{1}{\sqrt{1-x^2}}$
we derive
$\frac{d}{dx}4xcos^{-1}(2x+4)$
$=4cos^{-1}(2x+4)-\frac{8x}{\sqrt{1-(2x+4)^2}}$

Similarly, using
$\frac{d}{dx}\sqrt{x}=\frac{1}{2\sqrt{x}}$
we derive
$\frac{d}{dx}(-\sqrt{3-3x^2})$
$=\frac{3x}{\sqrt{3-3x^2}}$

Therefore, the derivative is
$f'(x)=\frac{d}{dx}(4xcos^{-1}(2x+4)-\sqrt{3-3x^2})$
$=4cos^{-1}(2x+4)-\frac{8x}{\sqrt{1-(2x+4)^2}}+\frac{3x}{\sqrt{3-3x^2}}$

3 0

3 years ago

Read 2 more answers

Solve the system below, choose the x and y answers from the list below.

Bumek [7]

Answer:

y=2, x=-1

Step-by-step explanation:

We can add the two equations together to eliminate x:

6x+5y+(-6x)+7y=4+20

12y=24

y=2

We plug y into the first equation and get

6x+5(2)=4

6x+10=4

6x=-6

x=-1

5 0

2 years ago

Which of the following is the constant ratio of the relation shown in the table?

Dafna11 [192]

There is no constant ratio

4 0

2 years ago

Read 2 more answers