4b=a then plus 10 to see if the age holds true to 3b=a in ten years. Then since the question is how old is she today? You must either add 6 to young age (of20) or minus 4 from the older (of 30).
So Betty would be 26 today.
Answer:
Step-by-step explanation:
- 2/(5 - √3) =
- 2(5 + √3)/(5 - √3)(5 + √3) = multiply by conjugate of the denominator
- 2(5 + √3)/(25 - 3) = simplify
- (5 + √3)/11 answer
Answer: 3.75 + - 7
Step-by-step explanation:
1.5x - 3 + 1.5x - 3 + 0.75x - 1
1.5x + 1.5x + 0.75x - 3 + - 3 + - 1
3.75x + - 7
First use the chain rule; take . Then
By the power rule,
By the quotient rule,
So
Answer:
f(x)=x-24
Step-by-step explanation:
It is decreasing by 24. Hope this helps!