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3 years ago

Can i get some help?

Mathematics

1 answer:

poizon [28]3 years ago

6 0

Answer:

The second one (4+3x = 9)

Step-by-step explanation:

From the working we can already tell that the second one is the odd one out without even doing the 4th one

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Find the factor pairs of 80

pochemuha

Answer:

1,2,4,5,8,10

Step-by-step explanation:

6 0

4 years ago

Scientists discover two planets orbiting a distant star. The average distance from the star to Planet A is 4 AU, and it takes 43

Kitty [74]

Answer:

Option C - 9 AU

Step-by-step explanation:

To find : What is the average distance from Planet B to the star?

Solution :

According to kepler's law,

The squares of the sidereal periods (of revolution) of the planets are directly proportional to the cubes of their mean distances from the Sun.

i.e. $P^2\propto S^3$

We have given,

The average distance from the star to Planet A is $S_1=4$ AU.

It takes 432 Earth days for Planet A to orbit the star i.e. $P_1=432$

It takes 1,460 days for Planet B to complete an orbit i.e. $P_2=1460$

Substitute the values in $(\frac{P_1}{P_2})^2=(\frac{S_1}{S_2})^3$

$(\frac{432}{1460})^2=(\frac{4}{S_2})^3$

$0.0875=(\frac{4}{S_2})^3$

Taking root cube both side,

$\sqrt[3]{0.0875}=\frac{4}{S_2}$

$0.444=\frac{4}{S_2}$

$S_2=\frac{4}{0.444}$

$S_2=9.00$

The average distance from Planet B to the star is 9 AU.

Therefore, Option C is correct.

5 0

3 years ago

4. If a Scooter goes 8 M/s, how fast does it go in KM/h?

Firlakuza [10]

Answer:

28.8 km/h

Step-by-step explanation:

I used the calculator, but I don't know any formulas for changing m/s km/h.

But I hope this helps!

7 0

3 years ago

Read 2 more answers

5.06 divided by 5.60

allsm [11]

Answer:

0.90357142857

Step-by-step explanation:

6 0

3 years ago

PLEASE HELP MEEEE!!!!!

Alisiya [41]

Answer:

Step-by-step explanation:

Hope this helped that's all.

5 0

3 years ago