I need Help please ill give out brainliest please don’t answer if you don’t know thank you

After reading the passage it seems as though the main idea is to state how Pluto got its name, I know this because the passage gives me supporting details and information to justify my conclusion, for example the story about the little girl named Ventia Burney suggesting the name Pluto to her grandfather. If we think about it, if that little girl never thought of that name then we would never have got the name Pluto. This is how i know.

Step-by-step explanation:

I hope this helps!

answer: 4

step-by-step explanation:

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15