Answer:
That would be 4.
Step-by-step explanation:
I have had this exact question..I got it right with 4. =-=
The square root of 7 would like between 2 and 3. This is because 2 x 2 is 4's square root and 3 x 3 is nine's square root. Seven is between four and nine.
The total distance will be 8685.2 kilo meters if she travelled by plane
Multiply all terms by 15
3x+3x= 10x+30
Combine like terms
6x=10x+30
Subtract 10x from both sides
-4x=30
Divide both sides by -4
x= -7.5
Final answer: -7.5
