Step-by-step explanation:
2/9w=24
cross multiply
2w=216
w=216/2
w=108
8/9p=12/18
cross multiply
144p=108
p=108/144
p=0.75
2.5c=15.75
c=2.5/15.75
c= 0.16
10/13n=-30/39
cross multiply
390n=-390
n=-390/390
n= -1
Answer:
Option B)
Step-by-step explanation:
We are given the following information in the question:
We want to study differences in the cost of a meal between restaurants in the city and suburban areas.
We have to perform a hypothesis test for the difference between the mean cost of a city meal and the mean cost of a suburban meal, using α = 0.05.
First, we design the null and the alternate hypothesis
The null hypothesis states that there is no significant difference mean cost of a city meal and the mean cost of a suburban meal that is they are the same.
The alternative hypothesis states that there is a significant difference mean cost of a city meal and the mean cost of a suburban meal that is they are not the same.
Answer: B
Multiply the square feet, 119.9, by 1.15 and find the answer near that
Vertex is (-2,-3) and it's a minimum.
Answer: D) III only
With figure I, we can't use HL (hypotenuse leg) theorem because we don't know if the two hypotenuses are the same length. We know that one pair of legs (the vertical legs) are congruent, but we don't have enough info
With figure II, we have two pairs of congruent legs. The tickmarks tell us this. However we don't know if the hypotenuses are congruent. Note: we can use the LL (leg leg) theorem, which is related to the HL theorem, but that's not what the teacher wants
Figure III is the only figure where we know that a pair of hypotenuses are the same length as shown by the similar tickmarks. The vertical legs are congruent as well for the upper pair of triangles. We have enough info to use HL.
