Water-cement ratio is the ration of mass of water to the mass of cement.
Numerically it is around 0.5, depending on the desired strength and workability.
A low ratio results in a dry mix which is difficult to compact, with a risk of developing voids in the final concrete.
A high ratio weakens the concrete, and is highly undesirable if strength is important.
To improve both the strength and workability of the concrete, sometime plasticizers are added.
It would have been appropriate to post this question in the Engineering section (if one is available).
the answer of 0.4 is 2/5 or 2 1/5
Answer:
The area of the face is 15 cm^2
Step-by-step explanation:
The formula for volume is
V = Bh where B is the area of the base and h is the height
90 = B * 6
Divide each side by 6
90/6 = 6B/6
15 = B
The area of the face is 15 cm^2
you need to get a common denominator
the common denominator is 40
3/8 * 5/5 = 15/40
2/5 * 8/8 = 16/40
25 15/40 < 25 16/40 so Karen rode farther
Company B because if u multiply 20×3 then you would only have to pay $60 and if u buy it from company A you would have to multiply 11×3 and then multiply 33× 20 and then you would have to pay $660 so u would save more with company B
