Answer:
(a) 7:9 or 7 to 9 or 
(b) 9:16 or 9 to 16 or 
Step-by-step explanation:
The first thing you need to figure out is how many daisies are in the vase. There are 9. So the answer to question a is 7 roses to 9 daisies. The answer to question b is 9 daisies to 26 total flowers in the vase.
I wrote #:# or # to # or 
#/# because these are all of the ways you can write a ration. I wasn't sure which one you needed.
Hope it helps! :)
D. (2,3)
Explanation:
We already know that x=2, so of we plug in 2 for x, we should get the y value.
Once we plug in 2 for x we should get the equation:
2(2)+3y=13.
Simplify that and we get:
4+3y=13.
Subtract 4 from both sides and we get:
3y=9.
Divide both sides by 3 and we get:
y=3.
This means that your ordered pair should be (2,3).
Hope this helps :)
Answer:
t Subscript alpha divided by 2 = 2.921
Step-by-step explanation:
With sample sizes lower than 30, we use the t-test.
Otherwise, we use the z-test.
Here, n = 17
So we use the t-test.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 17 - 1 = 16
Now, we have to find a value of T, which is found looking at the t table, with 16 degrees of freedom(y-axis) and a confidence level of 0.99(
). So we have T = 2.921
So the correct answer is:
t Subscript alpha divided by 2 = 2.921
Answer:
The form y=mx+b means slope m and y-intercept b; similarly, the form y=mx+a means slope m and y-intercept a.
The slope-intercept form of the equation of a line is a useful form for graphing as well as for understanding the relationship between x and y. In this lesson, learn how the slope-intercept form helps you understand the equation of a line.
The equation of a line can be written many different ways, and each of these ways is valid. The slope-intercept form of a line is a way of writing the equation of a line so that the slope of the line and the y-intercept are easily identifiable. The slope is the steepness of the line, and the y-intercept is the place the line crosses the y-axis.
A line is a relationship between two things - but not just any relationship. When you have a linear relationship, one that can be graphed as a line, there is one big condition:
No matter how much you have of a thing (often called x), if you add one more you always get a consistent amount more of the other thing (often called y).
