8x + 3c = 2200
11xc= 2200
2200÷11
200
200xc
<h2>
Answer with explanation:</h2>
Formula for plus-four confidence interval :

, where n= Sample size.
= Sample proportion and 
z* = Critical z-value.
Let p be the proportion of puppies area found with early hip dysplasia.
As per given , we have
n= 42

Since confidence interval is not given , so we assume it as 95% .
z-critical value for 95% confidence is 1.96.
Then, the required confidence interval will become :

Hence, the plus four confidence interval for p = (0.0484, 0.256)
Interpretation: We are 95% sure that the true proportion of puppies area found with early hip dysplasia lies in (0.0484, 0.256).
Answer:
x =9
Step-by-step explanation:
7x+3 = 6x + 12
x + 3 =12
x = 9
So both angles equal 66*

if their base is the same, the exponents must also be the same for the equation to be true.