If Nina is N years old now and Maryna is M years old now, write… Four years ago, Nina was three times as old as Maryna was.
1 answer:
You might be interested in
9514 1404 393
Answer:
see attached
Step-by-step explanation:
We're not quite sure what the question is.
It appears you may be interested in the names of the groups of 3 digits. Each such group is called a "period." Each period is named for the place value of its right-most digit.
The period just to the left of the decimal point is the "ones" period. To the left of that is the "thousands" period, and to its left is the "millions" period.
When writing the name of a number, the name of the three digits within a period is given, followed by the period name (if it is greater than "ones"). This continues left to right, until you get to the decimal point. For example, the number shown is ...
eight hundred sixty-two thousand seven hundred ninety-four
We can write
cos(t) = x/6
so
y = 5(±√(1 -(x/6)^2)*x/6
Then
y' = (±5/6)*(√(1 -(x/6)^2) + x/(2√(1 -(x/6)^2)*(-2(x/6))
The limit as x → 0 is ±5/6
The equations of the two tangents are
y = (5/6)x
y = (-5/6)x
cos(t) = x/6
so
y = 5(±√(1 -(x/6)^2)*x/6
Then
y' = (±5/6)*(√(1 -(x/6)^2) + x/(2√(1 -(x/6)^2)*(-2(x/6))
The limit as x → 0 is ±5/6
The equations of the two tangents are
y = (5/6)x
y = (-5/6)x