It is the opposite. There is nothing called same operation...
Answer:
A) 20ml
Step-by-step explanation:
You have a 2.5% solution (in 100 of the solution you have 2.5 of solvent), then if the dose that is being supplied to the cat is 5mg / kg it means:
if 1000 gr is equivalent to 100%
5 gr is equivalent to X;
X= (100%*5gr)/1000gr → X= 0.5%, , Therefore the amount of milliliters that should be supplied of 2.5% is:
if 100ml hava a concentration of 2.5, how many mililiters are necesary in a concentration 0.5
X=(0.5%*100ml)/2.5% → X=20ml
Answer:
c. y? =+4.198 x
Step-by-step explanation:
Hello!
Using the given data you need to estimate the equation of linear regression.
Dependent variable:
Y: Annual percentage change in stock price for a company.
Independent variable:
X: Annual percentage change in profits for the company.
The population regression line equation is:
![Y_i= \alpha + \beta X_i + E_i](https://tex.z-dn.net/?f=Y_i%3D%20%5Calpha%20%2B%20%5Cbeta%20X_i%20%2B%20E_i)
To estimate the equation you need to find the point estimator for α and β.
The following formulas are the ones to use:
α ⇒ a= y[bar] - bX[bar]
β ⇒ b= (∑xy - [(∑x)(∑y)]/n)/(∑X²-(∑x)²/n)
As you can see you need to make several summatories before calculating the values of a and b:
n= 7
∑x= 36.30
∑x²= 667.09
∑y= 51.60
∑y²= 747.98
∑xy= 560.74
Sample mean of de dependent variable Y[bar]= ∑y/n= (51.60/7)= 7.37
Sample mean of the independent variable X[bar]= ∑x/n= (36.30/7)= 5.19
b= ![\frac{560.74-\frac{(36.3*51.6)}{7} }{667.09-\frac{(51.60)^2}{7} }](https://tex.z-dn.net/?f=%5Cfrac%7B560.74-%5Cfrac%7B%2836.3%2A51.6%29%7D%7B7%7D%20%7D%7B667.09-%5Cfrac%7B%2851.60%29%5E2%7D%7B7%7D%20%7D)
b= 0.6122
a= ![7.37-(0.61*5.19)](https://tex.z-dn.net/?f=7.37-%280.61%2A5.19%29)
a= 4.196
The estimated regression equation is:
Y= 4.196 + 0.6122x
I hope it helps!
Answer:
about 3 seconds
Step-by-step explanation:
hope this helps
30/3= 10(if you do 30 divide by 3 then you need to divide 24 by 3 to)
24/3= 8
10x2= 20(same if you do 10 time 2 then you need to do 8 times 2)
8x2= 16
then add 30 and 24 with 20 and 16.
answer:40 in 50 sec