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choli [55]
3 years ago
7

Which of these is a unit of density?A. km/m³B. kg/m²C. kg/m³D. kg/m​

Mathematics
2 answers:
Anit [1.1K]3 years ago
8 0
The answer would be c I believe
zloy xaker [14]3 years ago
3 0

Answer:

\huge\boxed{C.\ \dfrac{kg}{m^3}}

Step-by-step explanation:

density=\dfrac{mass}{volume}\\\\\text{the unit of mass is}\ kg\\\text{the unit of volume is}\ m^3\\\\\text{therefore the unit of density is}\ \dfrac{kg}{m^3}

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3 years ago
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sesenic [268]
Your answer is x = -3/5, 2
4 0
3 years ago
Write a quadratic equation with a integer coefficients with roots x= 1/2 and x=-4
Misha Larkins [42]

The quadratic equation with roots a and b is given by:

x^2-(a+b)x+ab=0

Here a=1/2 and b=-4.

So the equation is given by:

\begin{gathered} x^2-(\frac{1}{2}-4)x+(\frac{1}{2})(-4)=0 \\ x^2+\frac{7}{2}x-2=0 \\ 2x^2+7x-4=0 \end{gathered}

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8 0
1 year ago
A small radio transmitter broadcasts in a 53 mile radius. If you drive along a straight line from a city 70 miles north of the t
son4ous [18]

Answer:

29% of the drive

Step-by-step explanation:

The plot of the problem is:

Transmitter at origin (0,0)  

City to the north at (0,70)

City to the east at (74,0)

The path from city to city is a line with slope:

m = (-70)/74 = -35/37

and y-intercept at y = 70, so the equation is y = (-35/37)*x + 70.

The transmitter reach the area enclosed by the next circle:

x^2 + y^2 = 53^2

See the picture attached

The intersection is gotten from the picture or solving:

x^2 + [(-35/37)*x + 70]^2 = 53^2

the points approximately are: (24.1, 47.2) and (45.8, 26.7)

From Pythagorean theorem the total distance of the trip is:

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And the distance when the signal is picked up is:

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You will pick up a signal from the transmitter in (d2/d1)*100 = 29% of the drive.

4 0
3 years ago
There are 60 marbles in a jar and 15 of those marbles are blue. Find the ratio of blue marbles to the marbles that are not blue
irakobra [83]

Answer:

1:3

Step-by-step explanation:

There are 60 marbles

15 are blue

60-15 = 45 are not blue

Ratio of blue : not blue

15:45

Divide by 15

15/15 : 45/15

1:3

3 0
3 years ago
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