To calculate mean: 1100 dollars.
Add up all values in the table shown and divide by the quantity of values given.
You have already added them - the sum is 5500. When divided by 5, this gives you the mean of 1100 dollars.
To calculate median: $1200
A median is the middle value in a data set. To calculate it, line up the numbers and eliminate the highest and lowest values until one value remains. In this case, that value is $1200.
To calculate mode: $1200
A mode is the value that appears most often in a data set. The value of $1200 appears twice in the table, more than any other value. This is your mode.
Four refrigerators have prices greater than $1100, so the mean is not as accurate as other statistical measurements here. This is due to the cheap price of $400 for one of the refrigerators skewing the average of the set.
Hello!
If you add up the squares of the two legs, it will equal the square of the hypotenuse. As we already have the hypotenuse, we will subtract.
225-81=144
Now we find the square root.
√144=12
Therefore, the other leg is 12 cm long.
I hope this helps!
Brooke is 8 years old! This is what I did⬇️
5x2=10. (In 5 yrs 10 will add to the sum of their age.
29-10=19. (The sum of their ages right now is 19)
11 + 8 = 19 ( 11 is 3 more than 8 and it equals their ages together)
Brooke:8
Samantha:11
Answer:
a) not proportional
b) proportional; k = 
Step-by-step explanation:
a) for any proportional equation, the line must pass through the origin. The equation in a) is y = 4x + 1, and the '+1' is the y-intercept. This means that the line does not pass through the origin, so x and y cannot increase by the same amount (i.e. they are not proportional).
Another way to determine this is is to use the y = kx base. If you have an equation that fits that it's likely proportional.
Here, if the equation was only y = 4x then it'd be proportional because u can see that k = 4. This is not the equation though, and the 4x + 1 doesn't fit to the y = kx formula so it can't be proportional.
b) straight away you can see that there's no 'c' term (y = mx + c) which means the y-intercept is 0, so the line passes through the origin. While this does not immediately mean the line is proportional, you can make sure that it is by checking it fits with the y = kx equation.
y = -(3/5)x fits with y = kx, with k being -3/5
