Answer:
c. 0.14
Step-by-step explanation:
Generally, for a given normal distribution, we can estimate the probability of the normal distribution using the equation below:
P (x greater than 
) = pnorm(, mean, sd, lower tail=FALSE)
The following variables are provided in the question:
= 15
n = 30
Therefore:
Mean: E(30*X) = 30(0.47)
Standard deviation: 0.15*
P (y greater than 15) = 1 - pnorm (15, 30*0.47, 0.15*)
P (y greater than 15) = 1 - pnorm (15, 14.1, 0.822) = 0.137
The approximate probability is 0.14
I'd go with your third option, 6.
Half the diameter (the radius, also the hypotenuse for the right triangle) is 10 units.
Half of the chord given by that blue line segment is 8 units. Now we do the Pythagorean Theorem (a² + b² = c²) to find the length of x.
x² + 8² = 10²
x² + 64 = 100
x² = 36
√x² = √36
x = 6
Answer:
25% or 30L
Step-by-step explanation:
100% is 120L, we know 75% is acid, we need the other 25% to make the 100%. 25% of 120 is 30, so 30 liters is pure acid
Answer:
A
Step-by-step explanation:
We know that the growth of a linear function will always be constant. So, that eliminates B and C.
A quadratic function can be a function such as 
, or 
, etc.
An exponential function wouldn't be , it would be 
! Or 
, or 
, etc. Therefore, D is eliminated.
So, the answer is 
and we're done!
Tricky but not crazy hard. You could use th x/y method where you turn it into a cross multiplication fiasco.
or you can try your guesses through what ever equals 1/2 when you add one to the denominator. the answer you are looking for is 2/3
2/3 + 1 for the numerator = 1.
2/3 + 1 for the denominator = 1/2.
