Answer:
-1.5 + 4.2
Step-by-step explanation:
Since there is no negative sign,the sign would change.
So it will be -1.5+4.2
Answer:
Step-by-step explanation:
its A
The answer is 12.7 this shows that I'm explaining it well
Answer:
V₂ = 252 cm³
Step-by-step explanation:
Charles's law = If the pressure is held constant, the volume of a gas varies directly with the temperature measured on the Kelvin scale.
Mathematically, 

We have, V₁ = 192 cm³, T₁ = 112 K, T₂ = 147 cm³, V₂ = ?
Using the above relation of Charles's law :

So, the new temperature is 252 cm³.
Answer:
Explained below.
Step-by-step explanation:
According to the Central Limit Theorem if an unknown population is selected with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from this population with replacement, then the distribution of the sample means will be approximately normal.
Then, the mean of the sampling distribution of sample means is given by,

And the standard deviation of the sampling distribution of sample means is given by,

So, if the sample of daily calcium intake of Americans collected is more than 30, then the sampling distribution of
will be approximately normal.