Answer:
The midpoint is 
Step-by-step explanation:
we know that
The formula to calculate the midpoint between two points is equal to

we have


substitute


Answer:
Step-by-step explanation:
58,000,000 km.
5.8 × 10⁷ Km
0.0025 cm
2.5 × 10⁻³ cm
5.8 × 10⁷ Km > 2.5 × 10⁻⁸
Answer: x=-5
2x-20=-30
x-10=-15
+10 +10
x=-5
Explanation: first, you need to divide by 2 to both sides. then, add 10 to both sides.
You should get, x=-5.