Answer:
<h2>Inverse variation</h2>
Step-by-step explanation:
Direct variation:
Inverse variation:
We have
cross multiply
it's an inverse variation
Answer:
B) only (-3 , 3)
Step-by-step explanation:
y = -3x - 6
(-4,4) y = -3 x (-4) - 6 = 12 - 6 = 6 .... incorrect
(-3,3) y = (-3) x (-3) - 6 = 9 - 6 = 3 ..... correct
Answer:
Null hypothesis:
Alternative hypothesis:
So we need to conduct a:
D. A two-sample z-test for a difference in population proportions
Because the idea is to check if the population proportions in the states are similar or not.
Step-by-step explanation:
For this case they are trying two proof if there is a significant difference between two states in the percents of high school students who order yearbooks, and we chan check this with the difference of proportions.
Lets say that are the two proportions of interest and we want to check the following hypothesis:
We have the following info given:
proportion of students that had ordered a yearbook from one state
proportion of students that had ordered a yearbook from another state
sample size from one state
sample size from another state
Null hypothesis:
Alternative hypothesis:
So we need to conduct a:
D. A two-sample z-test for a difference in population proportions
Because the idea is to check if the population proportions in the states are similar or not.
When something says 'solve for the system of equations' they are looking for a point where the graph of the two functions intersects. Since they give you the graph, the two functions approximately intersect somewhere between the x-value of -6 and -7 (i.e. -6.5) and somewhere between the y-value of -3 and -4 (i.e. -3.5). So, the closest estimate is (-6.5, -3.5) or A.
Answer:
b
Step-by-step explanation:
she walked for the first place in a while to be crying for a sec