Answer:
And the difference is given by:
Step-by-step explanation
We assume that th data is this one:
x: 242-255 -227-251-262-207-140
y: 91- 81 -91 - 92 - 102 - 94 - 91
Find the least-squares line appropriate for this data.
For this case we need to calculate the slope with the following formula:
Where:
So we can find the sums like this:
With these we can find the sums:
And the slope would be:
Now we can find the means for x and y like this:
And we can find the intercept using this:
So the line would be given by:
The prediction for 253 seconds is:
And the difference is given by:
Answer:
6
Step-by-step explanation:
Each recipe of waffles requires 3/4 cups of butter
Mrs Claus has 4 1/2 cups of butter
Therefore the number of recipes which she will be able to make can be calculated as follows
= 4 1/2 ÷ 3/4
= 9/2 ÷ 3/4
= 9/2 × 4/3
= 6
Hence Mrs Claus can make 6 recipes
Answer:
000.212
Step-by-step explanation:
Answer:
You do Thisbe
Step-by-step explanation:
35 Percent of 70 is 24.5
We assume, that the number 70 is 100% - because it's the output value of the task. We assume, that x is the value we are looking for. If 70 is 100%, so we can write it down as 70=100%. We know, that x is 35% of the output value, so we can write it down as x=35%. <span>Now we have two simple equations: 1.)70=100% 2.)x=35%</span>where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that: 70/x=100%/35% Now we just have to solve the simple equation, and we will get the solution we are looking for.