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love history [14]
3 years ago
9

A hypothetical population consists of eight individuals ages 14, 15, 17, 18, 19, 21, 28, and 30 years What is the probability th

at a person in this population is a teenager? What is the probability of selecting a participant older than 30? What is the probability of selecting a participant who is at least 20 years old?
Mathematics
1 answer:
xenn [34]3 years ago
8 0

Answer:

1)0

2)3/8

Step-by-step explanation:

2)total number of participants who are at least 20 years old = 3

Total number of participants= 8

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A parabola has its vertex at (-6, 5) and focus at (-6.25, 5). Which of the following is an equation for this parabola?
Pavlova-9 [17]

Answer:

Step-by-step explanation:

vertex and focus are horizontally aligned, so parabola is horizontal.

focal length p = distance between focus and vertex = 0.25

focus lies to the left of vertex, so the parabola opens to the left.

x = a(y-k)² + h,

vertex (h,k)

a = -1/(4p)

vertex (-6,5)

h = -6

k = 5

p = 0.25

a = -1/(4·0.25) = -1

x = -(y-5)² - 6

6 0
3 years ago
How do I solve for X if I have something like this?<br>(x+2)(1-x)= -4
lakkis [162]

(x+2)(1-x)=-4

subtract 2 from both sides: x(1-x)=2

simplify:x-2x=2

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3 years ago
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IRINA_888 [86]

Answer:

X=0

Step-by-step explanation:

4x=0

divide both sides by 4

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x=0

5 0
3 years ago
Read 2 more answers
210 suite is marked down by 30%.Find the sale price
Naya [18.7K]

Answer:

$147

Step-by-step explanation:

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Which is equivalent to 3/8"?<br> o<br> o<br> o<br> o
dimulka [17.4K]

Answer:

decimal form would be 0.375

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i would just pick the one you have the options with since you just asked a question with no choices but i hope this helps

Step-by-step explanation:

5 0
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