The horizontal axis represents variable A which means that variable A is ploted in the x-axis.
Each point is plotted (x, y) (i.e. the first number represents the value of variable A).
Therefore, the mean of variable A is
<h3>
Answer: 20/29</h3>
Explanation:
This is because cosine is the ratio of adjacent over hypotenuse
cos(angle) = adjacent/hypotenuse
In this case, 20 is the adjacent side to the reference angle C. The hypotenuse is the longest side 29.
Answer:
The cost of printing posters 2 to 100 is $9.
Step-by-step explanation:
The marginal cost of printing a poster when x posters have been printed is
We need to find the cost function.
Seprate the variables.
Integrate both sides.
where, C is an arbitrary constant.
We need to find the value of c(100)-c(1).
Substitute x=100 in the above function.
Substitute x=1 in the above function.
Therefore, the cost of printing posters 2 to 100 is $9.
Answer: He run 7 high-speed intervals and 8 low-speed intervals.
Step-by-step explanation:
Let x = Number of high-speed intervals.
y= Number of low-speed intervals .
He runs high-speed intervals in 16 seconds, and low-speed intervals in 23 seconds, and he runs a combined total of 15 intervals in 4 minutes and 56 seconds.
4 min 56 sec = (4(60)+56) sec = 296 sec [ 1 minute = 60 seconds]
According to the question , we have the following linear equations :
Multiply (i)by 16 , we get
Subtract (iii) from (ii)
Put value of y in (i) , we get
Hence, he run 7 high-speed intervals and 8 low-speed intervals.
$300 cause it’s lower than 350$