Answer:
x=28
Step-by-step explanation:
degrees of a triangle is always 180
2x+3x=5x
5x - 10 + 50
5x + 40
180 - 40 = 140
5x = 140
140/5 = 28
Answer:
d. .00012 or 0.00012
Step-by-step explanation:
The variance of the population proportion formula is given as:
p(1 - p)/n
Where n = sample size
p = population proportion or p(hat)
n = 2000 people
p = 0.52
Variance of the population proportion = 0.52(1 - 0.52)/ 2000
= 0.52 × 0.48 /2000
= 0.2496 /2000
= 0.0001248
Therefore the Variance of the population proportion is approximately = 0.00012
T h e. a n s w e r I s t h r e e
Answer:
160,000
Step-by-step explanation:
120,000 + 0.2(120,000)=120,000+24,000=144,000
144,000 were both populations in 2015.
x-0.1x = 144,000
0.9x=144,000
x=160,000
The Population of City Y in 2010 was 160,000
