It’s b here is proof of what i got
Answer:
(b) 1:9
(c) 1:8
Step-by-step explanation:
(b) x*y : kx*ky, so 1:k² with k=3 is 1:9
(c) Assuming the rectangles get a z dimension, the volumes would have a ratio of xyz : xkykzk = xyz : xyzk³ = 1 : k³. With k=2 that is 1:8. But the z was never introduced so this is a bit inconclusive.
Answer:
Part 1) 
Part 2) 
Step-by-step explanation:
Part 1) we have
----> equation A
----> equation B
substitute equation B in equation A

Applying property of exponents



therefore

Part 2) we have
----> equation A
----> equation B
substitute equation B in equation A

Applying property of exponents



simplify

therefore

9514 1404 393
Answer:
300 g
Step-by-step explanation:
The problem statement tells us ...
36g = 0.12×d . . . . . where d represents the daily value
36g/0.12 = d = 300g . . . . divide by the coefficient of d
300 g of carbohydrates per day are recommended.
Answer:
1st one
Step-by-step explanation: