Answer:
-23c - 15
Step-by-step explanation:
-4(5c+7) - 3c + 13
Expand brackets.
-20c - 28 - 3c + 13
Rearrange.
-20c - 3c - 28 + 13
Add or subtract like terms.
-23c - 15
Answer: Yes, this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood.
Step-by-step explanation:
Since we have given n = 157
x = 86
So, 
and we have p = 0.4
So, hypothesis would be

Since there is 1% level of significance.
So, test statistic value would be

and the critical value at 1% level of significance , z = 2.58
Since 2.58<3.846.
So, we reject the null hypothesis.
Hence, Yes, this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood.
Check the picture below.
bearing in mind the a solution is where both graphs intersect.
Answer:
△ABX ≅ △ACY, by reason that they are equal and congruent to each other.
I hope this answers your question.
Answer:x4+2x3+7x2+6x+12
Step-by-step explanation: