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poizon [28]
3 years ago
6

According to a certain​ country's department of​ education, 39.4​% of​ 3-year-olds are enrolled in day care. What is the probabi

lity that a randomly selected​ 3-year-old is enrolled in day​ care?
Mathematics
1 answer:
SCORPION-xisa [38]3 years ago
7 0

Answer:

0.394

Step-by-step explanation:

Given:

Percent of 3 year-olds enrolled in daycare = 39.4%

The above statement means that if the total number of 3 year-olds is 100, then out of the 100 persons aged 3 years, the number of persons enrolled in a daycare is 39.4.

Now, probability of an event is the ratio of the favourable outcomes for that event to the total number of outcomes.

Here, the favourable number of outcomes is the number of persons aged 3 years enrolled in a daycare which is equal to 39.4.

The total number of outcomes is the total number of 3 year-olds which is 100.

Therefore, the probability that a randomly selected​ 3-year-old is enrolled in day​care is given as:

P(enrolled)=\frac{39.4}{100}=0.394

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patriot [66]
100-0.0124=99.9876

10%=1/10
1/10P=P(0.999876)^t
divide both sides by P
1/10=0.999876^t
take ln of both sides
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divide both sides by (ln(0.999876))
ln(1/10)/(ln(0.999876))=t
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How many times greater is 7,000,000 than 70,000
Kryger [21]
The answer is 100 times
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write an equation of the line in slope-intercept form of each line given slope and y intercept m=2;b2
inn [45]

Answer:

y = 2x + 2

Step-by-step explanation:

Given

m = 2

b = 2

Required

Write equation in slope intercept form

An equation in slope intercept form is:

y = mx + b

Substitute values for m and b

y = 2x + 2

4 0
3 years ago
Which inequality best represents that ice cream at −2°C is cooler than ice cream at 4°C?
IrinaK [193]

Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
6:20=9:x=x:10=x:60=16:x=12:x
ivolga24 [154]

6:20=9:30=3:10=18:60=16:160/3=12:40

Step-by-step explanation:

The question requires you to find value of x in the ratios given;

Start with the first pair

6:20 = 9:x

6/20 =9/x

6x=20*9

6x=180

x=180/6=30 ⇒⇒ 6:20 = 9:30

The second pair after replacing the value of x=30 will be

9:30 = x:10

9/30=x/10

90=30x

90/30 =x

3=x⇒⇒ 9:30 = 3:10

The third pair after replacing value of x=3 will be

3:10 =x:60

3/10 =x/60

180=10x

180/10 =x

18=x ⇒⇒ 3:10 = 18:60

The fourth pair after replacing value of x=18 will be;

18:60 = 16:x

18/60 = 16/x

18x=16*60

x= (16*60)/18 =160/3

x= 160/3  ⇒⇒⇒ 18:60 = 16: 160/3

The firth pair after replacing value of x=160/3 will be;

16: 160/3 =12:x

16x= 160/3 *12

16x = 160 * 4

x= (160 *4 )/16

x=40

⇒⇒ 16: 160/3 = 12: 40

Learn More

Ratios and proportions :brainly.com/question/9512748

Keywords : ratio, value of x, proportion

#LearnwithBrainly

6 0
3 years ago
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