Answer:
a) 0.46; b) 0.41; c) 0.19; d) 0.59
Step-by-step explanation:
For part a,
There were 121 people that walked by; out of these 56 entered the store. This is an empirical probability of
56/121 ≈ 0.46
For part b,
There were 56 people that entered the store. Of those, 23 bought something. This is an empirical probability of
23/56 ≈ 0.41.
For part c,
We multiply the probability that someone walking by enters the store and the probability that someone entering the store buys something:
0.46(0.41) = 0.1886 ≈ 0.19
For part d,
Since the probability of someone entering the store buying something is 0.41, this means the probability that this person does not buy something is
1-0.41 = 0.59.
Answer:
2A/h - a = b
Step-by-step explanation:
Using A= 1/2(a+b)h
Divide both side by h
⇒A/h = 1/2(a + b)
Mutiply both sides by 2
⇒2A/h = a + b
Take the 2 over to the other side
2A/h - a = b
Keep in mind, that the (a) is not on the bottom, rather on its own
3a+20=-25
Subtract 20 from both sides
3a=-45
Divide both sides by 3
a=-15
Final answer: a=-15
ANSWER
A parabola.
EXPLANATION
The given conic is :
This can be rewritten as:
This is a parabola with the vertex at the origin.
The foci is (0,4)
Therefore the given conic section is a parabola that has an axis of symmetry parallel to the y-axis.
Answer:
I think its 12.3 years
Step-by-step explanation:
a fifth of 775 is 155 and 155 x 12.3 = 1850
