All categories

3 years ago

Solve the equation 3x^2+8x+5=0

Physics

1 answer:

Pachacha [2.7K]3 years ago

4 0

$3x^2+8x+5=0\\
3x^2+3x+5x+5=0\\
3x(x+1)+5(x+1)=0\\
(3x+5)(x+1)=0\\
x=-\dfrac{5}{3} \vee x=-1$

You might be interested in

What can you conclude about x-rays compared to microwaves?

Alinara [238K]

It is D. X rays have a shorter wavelength than microwaves.

6 0

3 years ago

Read 2 more answers

Do you think that biofuel is the only solution to the problem of reducing our

I am Lyosha [343]

Answer:

f biofuel production and use reduces our consumption of imported fossil fuels, we may become less vulnerable to the adverse impacts of supply

Explanation:

4 0

2 years ago

Read 2 more answers

The gravitational attraction between two objects increases if

JulijaS [17]

Answer:

they are closer!!

Explanation:

Hope this helped!! :D

8 0

3 years ago

Calculate the orbital period of a dwarf planet found to have a semimajor axis of a = 4.0x 10^12 meters in seconds and years.

padilas [110]

Explanation:

We have,

Semimajor axis is $4\times 10^{12}\ m$

It is required to find the orbital period of a dwarf planet. Let T is time period. The relation between the time period and the semi major axis is given by Kepler's third law. Its mathematical form is given by :

$T^2=\dfrac{4\pi ^2}{GM}a^3$

G is universal gravitational constant

M is solar mass

Plugging all the values,

$T^2=\dfrac{4\pi ^2}{6.67\times 10^{-11}\times 1.98\times 10^{30}}\times (4\times 10^{12})^3\\\\T=\sqrt{\dfrac{4\pi^{2}}{6.67\times10^{-11}\times1.98\times10^{30}}\times(4\times10^{12})^{3}}\\\\T=4.37\times 10^9\ s$

Since,

$1\ s=3.17\times 10^{-8}\ \text{years}\\\\4.37\times 10^9\ s=4.37\cdot10^{9}\cdot3.17\cdot10^{-8}\\\\4.37\times 10^9\ s=138.52\ \text{years}$

So, the orbital period of a dwarf planet is 138.52 years.

3 0

3 years ago

Which of the following correctly describes the hierarchy that exists in the universe? (3 points)

r-ruslan [8.4K]

Answer:

Explanation:

A solar system is a collection of planets, their moons, and other objects in orbit around a central star.

5 0

3 years ago