Answer:
Step-by-step explanation:
We have been given that there were 32 volunteers to donate blood. Unfortunately, n of the volunteers did not meet the health requirements, so they couldn't donate.
So the number of volunteers that donated blood will be 32-n.
We are also told that the rest of the volunteers donated 470 milliliters each.
To find the units of blood donated by each of the volunteers we will divide total units of donated blood by number of volunteers, who donated the blood (32-n).
Therefore, each of the volunteers donated
millimeters of blood.
Answer: 
Step-by-step explanation:
For this case, we must indicate the fraction that is equivalent to 0.53.
It is observed that the decimal is rolled twice to the left, that tells us to divide by 100.
Thus, dividing the whole number "53" among 100 we have:

Answer:

Answer:
The perimeter of rectangle is 
Step-by-step explanation:
Let
x-----> the length of the rectangle
y----> the width of the rectangle
we know that
----> equation A
---> equation B (area of the constructed figure)
substitute the equation A in equation B


using a graphing calculator -----> solve the quadratic equation
The solution is

Find the value of x

Find the perimeter of rectangle

Rounding to the nearest ten:
28 → 30
188 → 190
250 → 250
101 → 100
122 → 120