It would be 2/10 or 1/5 simplified
Your calculator says error because you cant have a square root of a negative number because there is no solution to that maybe recheck your equation and try again
For 6 hours charges $330
for 9 hours charges x
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x = 9*330/6 = 495 so choice C. is right
Answer:
the correct answer is D
Step-by-step explanation:
Answer:
Fred is 28 yrs old. Nathalie is 12yrs old
Step-by-step explanation:
Let Nathalie's age be x
Let Fred's age be a
x+a=40 yrs•••••1
4x+a=76yrs•••••2
a=40-x
Substitute a for 40-x in equation (2)
4x+40-x=76
3x=76-40
3x=36
x=12
a=40-12
a=28
