(x+6^2)
Answer:
ok sorry i could not put this into a formula im have to go but i will show you a really easy way.
Step-by-step explanation:
for number 1 i got (7,-1)
This is because there is a slope of 1/1 between these two points. so i plotted the two points on the graph. The distance between the two points is 4. so i followed the slope 4 times and thats what i got.
The correct way for doing number 1 is using the distance formula i believe but im running out of time
for the second one i got (3, -1/2)
we do this by using the midpoint formula.
The first picture is for number one and the second for number 2
if you have any questions feel free to ask in the comments
In a data set, if the standard deviation is given as 9, the variance would be the square of that which equals to 81.
The standard deviation and variance are closely related in statistics. Standard deviation is the square root of the variance. Therefore, if the standard deviation for a data set is given as 9, then the variance would be the square of that value.
To calculate this, you would do the following:
So, if the standard deviation for a data set is 9, then the variance for that data set is equal to 81.
#SPJ12
Answer:
Redwood: $3.50 per foot
Pine: $1.10 per foot
Step-by-step explanation:
The manner that should be approach is by using the substitution method.
Therefore using the information from the question:
50 ft of redwood and 90 ft of pine give a total cost of $274
So we use this information and make a equation using x and y, in this case redwood would be x and pine would be y.
We do this for the second purchase also...
Now, we have two equations that are perfect for the usage of the substitution method.
Using one equation, in this case the top one, we must solve for either x or y (in this case we solved for y)
Using this equation from above we insert this into the other equation that deals with the second purchase and solve for x now.
This is the cost of redwood so now we use this answer and plug it in either equation in order to get the cost of pine (y).
So therefore you get the two costs by using the substitution method!
~~~~Best!!!
b) 1/5
c) 1/10
d) 1/4