-6/7 = -x/84
84/7 = 12
12(-6) = -72
x = -72
So, -6/7 = -72/84 because -72/84 simplifies to -6/7
Answer:

Step-by-step explanation:
Given


Required
The selling price
This is calculated as:




B) Since 80% is orange juice so you know that 20% is water. And it says there is 1L water. Therefore 20% = 1. (4) X 20%=1 X (4) The answer is 4L of orange juice.
A) I am not sure Sorry.
Answer:
4.25
Step-by-step explanation:
Here in this question, we want to calculate the mean absolute deviation of the data.
The first thing we will do here is to calculate the mean;
= (74 + 79 + 76 + 85 + 87 + 83 + 86 + 78)/8 = 81
Now, the next thing to do here is to calculate how far each of the values have deviated from the mean. This can be calculated by subtracting the mean from each individual value;
This is presented in the table on the attachment, please check attachment for this
Afterwards, we find the absolute value of all these subtractions then divide by 8 which is the number of values in the data.
Mean absolute deviation = Sum of all absolute deviations/number of values in dataset
That would be
( x + 3)^2 + (y + 5)^2 = 6^2
(x + 3)^2 + (y + 5)^2 = 36 answer