Answer:
a=5
Step-by-step explanation:
18=5a-2a+3
Combine like terms
18 = 3a +3
Subtract 3 from each side
18-3 = 3a+3-3
15 = 3a
Divide by 3
15/3 =3a/3
5 =a
Answer:
x = 15
Step-by-step explanation:
let me know if you want an explanation
Answer:
1 1/2 pizzas were eaten
Step-by-step explanation:
They each ate 3/4
3/4*2
or 3/4+3/4 =6/4
1 2/4
1 1/2 pizzas were eaten
You need to show the graph. But it would show that on 0 days it costs 0 dollars.So on day One two and three it should be $6.
Answer:
a) The 90% confidence interval is
b) The margin of error is 0.063.
Step-by-step explanation:
We have to construct a 90% confidence interval for the proportion of students enrolled in college or a trade school within 12 months of graduating from high school in 2013.
We have a sample of 160 students, and a proportion of:
The standard deviation is:
As the sample size is big enough, we use the z-value as statistic. For a 90% CI, the z-value is z=1.645.
Then, the margin of error is:
Then, the 90% confidence interval is: