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Ivanshal [37]
3 years ago
10

For an outdoor concert by the city​ orchestra, concert organizers estimate that 17,000 people will attend if it is not raining.

If it is​ raining, concert organizers estimate that 4,000 people will attend. On the day of the​ concert, meteorologists predict a 70​% chance of rain. Determine the expected number of people who will attend this concert.
Mathematics
1 answer:
atroni [7]3 years ago
8 0

Answer:

Expected number of people in concert = 7900 people

Step-by-step explanation:

We have given,

In an concert,

if it's not raining , number of people will attend concert = 17000 people

If it's raining , then number of people will attend concert = 4000 people

Since, probability of raining = 70% = 0.7

Then probability of not raining = 30% = 0.3

So,

Expected number of people in concert = 0.3 * 17000 + 0.7 * 4000

Expected number of people in concert = 5100 + 2800

Expected number of people in concert = 7900 people

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Find the difference between 7 1/2 and 2 3/4
NNADVOKAT [17]

Answer:

4\frac{3}{4} or 4.75

Step-by-step explanation:

first we're going to convert the number into improper fractions.

7\frac{1}{2}= \frac{15}{2} and 2\frac{3}{4}= \frac{11}{4}

For subtracting it is suitable to adjust both fractions to an equal denominator, so we're going to multiply \frac{15}{2}x2, it'll equal the same number.

So now we have \frac{30}{4}-\frac{11}{4}, 30-11= 19.

\frac{19}4} simplified is, 4\frac{3}{4}.

As you can see I also added 4.75 as an answer, that's if the answer must be a decimal.

I hope this helps you!

3 0
3 years ago
The shop sold 12,789 chocolate and 9,324 cookie dough cones. It sold 1078 more peanut butter cones than cookie dough cones. And
Brut [27]

Answer:

46,303

Step-by-step explanation:

12789+9324+9324+1078+12789+999= 46,303

5 0
3 years ago
_______ is a combination of two functions such that the output from the first function becomes the input for the second function
zmey [24]
B. Dependent function












8 0
3 years ago
Wilfred is feeding his goats. He gives 56% of the bag of feed to the goats in field A and the rest to the goats in field B. If t
krok68 [10]

Answer:

Feeds = 11.76kg

Step-by-step explanation:

Given

Field\ A= 56\%

Field\ B= The\ rest

Bag = 21kg\ feed

Required

Determine how much goats in field A, get.

To do this, we simply multiply the percentage feed received by goats in field A by the actual bags of feeds

i.e.

Feeds = 56\% * 21kg

Convert percentage to decimal

Feeds = 0.56 * 21kg

Feeds = 11.76kg

<em>Hence, goats in field A get 11.76kg of feeds</em>

6 0
2 years ago
Write three fractions equivalent to \frac{9}{15}
Aleks [24]

(a) On scaling up by a factor of 2 , the equivalent fraction is 18/30.

(b) On scaling up by a factor of 3 , the equivalent fraction is 27/45.

(c) On scaling down by a factor of 3 , the equivalent fraction is 3/5 .

In the question ,

a fraction 9/15 is given ,

Part(a)

to scale up the fraction by a factor of 2 , we multiply the numerator and denominator by 2 .

On multiplying , we get

9/15 = (9*2)/(15*2) = 18/30 .

Part(c)

to scale up the fraction by a factor of 3 , we multiply the numerator and denominator by 3 .

On multiplying , we get

9/15 = (9*3)/(15*3) = 27/45 .

Part(c)

to scale down the fraction by a factor of 3 , we divide the denominator and numerator by 3 .

On dividing , we get

9/15 = (9/3)/(15/3) = 3/5 .

Therefore , (a) On scaling up by a factor of 2 , the equivalent fraction is 18/30.

(b) On scaling up by a factor of 3 , the equivalent fraction is 27/45.

(c) On scaling down by a factor of 3 , the equivalent fraction is 3/5 .

The given question is incomplete , the complete question is

Write three fractions equivalent to 9/15 .

Scale the numerator and denominator up for the first two and down for the third.

(a) Scale up by: __ Equivalent fraction: __

(b) Scale up by: __ Equivalent fraction: __

(c) Scale down by: __ Equivalent fraction: __

Learn more about Equivalent Fraction here

brainly.com/question/10864405

#SPJ1

7 0
1 year ago
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