Combine like terms.
3x - x + 2 =
2x + 2
Answer:
Step-by-step explanation:
5x + 2 + 2x + 10 = 180
7x + 12 = 180
7x = 168
x = 24
5(24) + 2 = 120 + 2 = 122
2(24)+ 10 = 48 + 10 = 58
The negative sign on an exponent means the reciprocal. Think of it this way: just as a positive exponent means repeated multiplication by the base, a negative exponent means repeated division by the base.
Answer:
The best point estimate for a 95% confidence interval for the proportion of veterinary clinics that do not treat large animals is 0.733±0.079 i.e between
0,654 and 0.812.
Step-by-step explanation:
Confidence Interval can be calculated using p±ME where
- p is the proportion that do not treat large animals ( =0.733)
- ME is the margin of error from the mean
and margin of error (ME) around the mean can be found using the formula
ME= where
- z is the corresponding statistic in 95% confidence level (1.96)
- p is the sample proportion ()
- N is the sample size (120)
Then ME= ≈ 0.079
Then 95% confidence interval is 0.733±0.079