Answer:
-3/5
Step-by-step explanation:
We can find the slope using the slope formula
m= ( y2-y1)/(x2-x1)
= ( 8-5)/(-7 - -2)
= (8-5)/(-7+2)
= 3/-5
- 3/5
Answer:
a) Positive linear
b) 72
c) Marks scored when no time is spend on homework.
Step-by-step explanation:
a) relationship between the hours spent on homework and the test scores
As the time spent on homework increases the test score increases.
Similarly if less time is spent on homework, there would be a decrease in test score.
The two variables are directly related.
Thus, there relationship can be expressed as a positive linear relationship.
b) The model function
![y= 8x + 40](https://tex.z-dn.net/?f=y%3D%208x%20%2B%2040)
where y is the test score and x is the time spent on homework in hours.
Score predicted by model when x = 4
![y(4)= 8(4) + 40 = 32 +40 = 72](https://tex.z-dn.net/?f=y%284%29%3D%208%284%29%20%2B%2040%20%3D%2032%20%2B40%20%3D%2072)
Thus, model predict that the score on test will be 72 when 4 hours are spent on homework.
c) Interpretation of 40
When x = 0
![y(0)= 8(0) + 40 = 40](https://tex.z-dn.net/?f=y%280%29%3D%208%280%29%20%2B%2040%20%3D%2040)
Interpretation:
Thus, when Paul spends no time on homework that is zero hours are spend on homework, then, Paul will score 40 on test.
Answer:
B
Step-by-step explanation:
5 yards + 3 yards = 8 yards of fabric. The answer is A. Hope this helps.
Answer:
486cm^2
Step-by-step explanation:
cube volume: 729cm^3
cube faces count: 6
How you calculate square area:
s(cm) * s(cm) or just s^2(cm^2)
s = side length
If you want to find out the side length of a cube by its volume. Then simply just remove the ^3 by taking the cubic root (also written ^(1/3))
729^(1/3) = 9
then just calculate the area like i showed earlier:
(9cm)^2 = 81cm^2
But that is only one side of a cube's 6 sides, so multiply by 6:
81cm^2 * 6 = 486cm^2
Hope i could help :D
Dont be scared to ask me questions..