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Aleks [24]
2 years ago
13

I DONT UNDERSTAND THIS AT ALLLL :´)

Mathematics
2 answers:
lutik1710 [3]2 years ago
5 0

Answer:
The cost of popcorn per container = $2.50
The cost of bottle of juice each       = $ 3.00

(Now multiple it)

2.50 x 8 = $20.00
3 x 11 = $33

(Now "+" the both answer that we multiple)

$20.00 + $33 = $53

(So we know how much she spend)


Therefore She spend $20 on popcorn per container and $33 on bottle of juice, so total she spend $53 for both popcorn and bottle of juice.

---------------------------------------------------X-----------------------------------------------------

creativ13 [48]2 years ago
4 0

Step-by-step explanation:

2.50x+3.00y=?

x=8 y=11

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The price of a European tour includes stopovers at five cities to be selected from 15 cities. In how many ways can a traveler pl
xeze [42]

Answer:

The traveler can plan such a tour in 3003 ways.

Step-by-step explanation:

The order that the cities are chosen is not important, since it is chosen by the company and not by the traveler. So we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this problem, we have that:

Combinations of 5 cities from a set of 15. So

C_{15,5} = \frac{15!}{5!10!} = 3003

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4 0
3 years ago
Colby is making a home video consisting of a 5-minute introduction followed by several short skits. Each skit is 6 minutes long.
givi [52]
<h2>Hello!</h2>

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<h2>Why?</h2>

From the statement, we know that the total length of the video is 101 minutes and it contains a 5-minute introduction, the rest of the minutes are short skits (which are 6 minutes long each one).

So, we need to write the following equations:

First equation:

TotalDuration=Introduction+n*Skit

Second equation:

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Where,

TotalDuration=101Minutes\\Introduction=5Minutes\\n=NumberOfSkits\\Skit=6Minutes

So, replacing and substituting the second equation into the first equation we have:

101Minutes=5Minutes+n*6Minutes\\n*6Minutes=101Minutes-5Minutes\\n*6Minutes=96Minutes\\n=\frac{96Minutes}{6Minutes}=16

So, there are a total of 16 skits in the video.

Let's prove it substituting "n" into the first equation:

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Answer:

see explanation

Step-by-step explanation:

let ∠BCE = x then ∠ECD = 5x - 6 and

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