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:
0.15% decrease
Step-by-step explanation:
18.75 - 18.60 = 0.15
Hope this helped!
<span>2x + x = 12
=> x =12/3 =4
so, original number is 84. </span>
Answer:
f(-5)=-5
Step-by-step explanation:
f(-5)= -((-2)(-5)-5)
= -(10-5)
= -(5)
= -5
Answer:
-3c+12d
Step-by-step explanation:
