Answer:x=16
Step-by-step explanation:
4x+45=3x+61
Collect like terms
4x-3x=61-45
x=16
Answer:
Hey Girl or Boy
Step-by-step explanation:
Yes....one is an enlargement of the other!
hope this helps!
Answer:
Chlorine: -34 °C
Krypton: -153.2 °C
Step-by-step explanation:
Boiling point of elements in degree Celsius (°C)
Argon: -185.8 °C
Chlorine: -34 °C
Fluorine: -188.1 °C
Hydrogen: -252.87 °C
Krypton: -153.2 °C
Helium: -268.9 °C
Boiling points that are above the boiling point of Argon.
Chlorine: -34 °C
Krypton: -153.2 °C
Answer:
Step-by-step explanation:
The formula for determining the confidence interval for the difference of two population means is expressed as
Confidence interval = (x1 - x2) ± z√(s²/n1 + s2²/n2)
Where
x1 = mean sale amount for mail order sales = 82.70
x2 = mean sale amount for internet sales = 66.9
s1 = sample standard deviation for mail order sales = 16.25
s2 = sample standard deviation for internet sales = 20.25
n1 = number of mail order sales = 17
n2 = number of internet sales = 10
For a 99% confidence interval, we would determine the z score from the t distribution table because the number of samples are small
Degree of freedom =
(n1 - 1) + (n2 - 1) = (17 - 1) + (10 - 1) = 25
z = 2.787
Margin of error =
z√(s²/n1 + s2²/n2) = 2.787√(16.25²/17 + 20.25²/10) = 20.956190