Answer:
x = 18
Step-by-step explanation:
x/6 - 7 = -4
Add 7 on both sides.
x/6 = -4 + 7
x/6 = 3
Multiply 6 on both sides.
x = 3 × 6
x = 18
I would go with -15 that’s what I came up with
Answer: x=−1 or x=8
Step-by-step explanation: 7x−2=x2−10
Learn how to solve quadratic equations
Khan Academy Video: Solving a quadratic by factoring
Khan Academy Video: Quadratic Formula 1
Answer: The mercury is 38 mi far from sun.
Step-by-step explanation:
Let x denotes the distance ( in mi )between the Sun and Mercury .
Distance from Venus to Sun = x+30.9
Distance from Earth = x+30.9+ 23.6 =x+30.9+ 23.6 =x+54.5
When the total of the distances for these plants from the sun is 199.4 mi.
According to the given statements , we have



[Divide both sides by 3]
Hence, the mercury is 38 mi far from sun.