Answer:
a. 16
b. 80
c. Blood type AB
Step-by-step explanation:
Given:
O = 45%
A = 40%
B = 11%
AB = 4%
Total number of donors = 145
a. No. of donors that had type B blood = 
Type B blood donors ≈ 16
b. No. of blood donors without blood type O = 
Those without blood type O ≈ 80
c. Find the number of people that had type AB:
Type AB = 
≈ 6. This is less than 10 donors.
Therefore, blood type AB had less than 10 donors.
Answer:
x=14/3
Step-by-step explanation:
4x-3-x+5=30-3x
3x+2=30-3x
3x+3x=30-2
6x=28
x=28/6=14/3
x=14/3
<em>Hope this helps</em>
<em>please mark me as brainliest.</em>
Answer:
y = 70 and x = 20
Step-by-step explanation:
180 - 40 = 140
140/2 = 70
70 + 90 = 160
180 - 160 = 20
i would say you need to divide 45 and 3. then subtract 45 and 15. then with those two numbers you need to put the amount from 45 / 3 on the top and the 15-45 on the bottom. you will get the probability.
i think don't quote me
