Answer:
4th option
Step-by-step explanation:
the equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
calculate m using the slope formula
m =
with (x₁, y₁ ) = (2, 12) and (x₂, y₂ ) = (6, 6) ← 2 points on the line
m = =
= -
the line crosses the y- axis at (0, 15 ) ⇒ c = 15
y = - x + 15 ← approximate equation of line of best fit
Answer:
a. Probability of landing on red =
b. <em>See Explanation</em>
Step-by-step explanation:
Given
A Spinner
Number of section = 10 (equal sized)
Number of red section = 2
Required
- Probability of landing on red
- Describe the probability in words
Calculating the probability of landing on red
The formula used in calculating probability is as follows
Probability = Number of required outcomes / Number of possible outcomes
In this case, the number of required outcomes is the number of red section.
Hence, number of required outcomes = 2
And the number of possible outcomes is the total section of the spinner
Hence, Number of possible outcomes = 10
By Substitution
Probability of landing on red =
Probability of landing on red =
Describe the probability in words
From (a) above, we have that the probability of the spinner landing on color red is
This means that, for every five times, you spin the spinner, it's likely that one of the outcomes will be red.
Answer:
Domain: {−2, −1, 0, 2} Range: {−4, −2, 2}
Step-by-step explanation:
We have been given a mapping diagram as shown below:
X Y
-2 -4
-1 -2
0 2
2
For better view, you can check the attached mapping diagram.
From that diagram we have to find domain and range.
Domain contains only x values so domain will be:
Domain: {-2,-1,0,2}
Range contains only y values so range will be:
Range: {-4,-2,2}
We see that only third choice matches obtained values of domain and range.
Hence final answer is Domain: {−2, −1, 0, 2} Range: {−4, −2, 2}
