Answer:
Step-by-step explanation:
Let chocolate bar = c and blow pops = b
<u>As per given we have equations below:</u>
- 5c + 8b = 23.25
- 2c + 13b = 21.55
<u>13 times the first equation minus 8 times the second to eliminate b and find c:</u>
- 13(5c + 8b) - 8(2c + 13b) = 13(23.25) - 8(21.55)
- 65c - 16c = 129.85
- 49c = 129.85
- c = 129.85/49
- c = 2.65
Each chocolate bar costs $2.65
The answer is x= -3. 0.7(-3)-1.4=-3.5
The average of scores is 160.5
Step-by-step explanation:
Mean is the sum of all values divided by the number of values.
Given scores are:
138,151,198,147,156, and 173
The formula for average score is given by:
Putting values
The average of scores is 160.5
Keywords: Mean, Average
Learn more about mean at:
#LearnwithBrainly
Answer: 6.25^12
Step-by-step explanation:
Answer:
Step-by-step explanation:
The homework grade, to the nearest integer, for a student with a test grade of 68 is 69.
Step-by-step explanation:
The general form of the linear regression equation is:
Here,
y = dependent variable = test grade
x = independent variable = homework grade
a = intercept
b = slope
