Answer:
the anser would be the second one i think hope it helps please mark brailiest
Step-by-step explanation:
Answer:
who is that? Maybe i know this person...
Step-by-step explanation:
Given:
m is directly proportional to the cube of h.
m = 525 when h= 5.
To find:
The equation connecting m and h.
Solution:
m is directly proportional to the cube of h.

...(i)
Where, k is the constant of proportionality.
Putting m = 525 and h= 5, we get



Putting k=105 in (i), we get

Therefore, the required equation is
.
Answer:
1:4
Step-by-step explanation:
Let X be the quantity of 30% acid and Y be the quantity of 5% acid.
0.3X + 0.05Y = 0.1(X+Y)
0.3X + 0.05Y = 0.1X + 0.1Y
0.3X - 0.1X = 0.1Y - 0.05Y
0.2X = 0.05Y
X/Y = 0.05/0.2
X/Y = 1/4
X:Y = 1:4