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Serga [27]
3 years ago
7

A $65 meal is put on the table. The couple plans on leaving an 18% tip. How much should be left altogether?

Mathematics
1 answer:
elena-14-01-66 [18.8K]3 years ago
8 0

Answer:

76.70

Step-by-step explanation:

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An elevator starts at the basement with 8 people (not including the elevator operator) and discharges them all by the time it re
Rus_ich [418]

Answer:

1287

Step-by-step explanation:

Number of people in elevator , n = 8

Number of floors, r = 6

Since they all look alike, arrangement doesn't matter, the we use combination :

(n+r-1 r - 1) = (8+6-1 C 6-1) = 13C5

Recall:

nCr = n! / (n-r)!r!

13C5 = 13! / (13-5)!5!

13C5 = 13*12*11*10*9 / 5*4*3*2*1

= 1287

4 0
2 years ago
9, 21, 7, 11, 13, 21, 5, 14, whats the range?
maria [59]
16 would be the range. The lowest value is 5, and the highest value is 21. You just subtract those two which gives you 16! (:
4 0
3 years ago
Read 2 more answers
Of the following options, what could be a possible first step in solving the equation 3x − 1 = 2x + 4? Combining like terms, 3x
faust18 [17]
<span>Subtracting 2x from both sides of the equation would be a reasonable first step in solving this equation as it properly combines like terms to the left side of the equation. It quickly shows that the next step would be adding 1 to both sides of the equation, which would have us arrive at the answer of x = 5.</span>
8 0
3 years ago
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The theater sells two types of tickets: adult tickets for $15 and
UkoKoshka [18]

Answer:

68

Step-by-step explanation:

Let x=adult tickets and y=child tickets

1) 15x+11y=1889

2) x+y=147

multiply equation 1 by -1/11 on both sides to get:

-(15/11)x-y=-171.73

add new equation with equation 2 to get

-4/11x=-24.73

Isolate x to get:

x=67.99999

Round up to get 68 adult tickets

6 0
3 years ago
Write an expression that can be used to find 4x275
vovikov84 [41]
2(200+75) That would be one expression that can be used to find that.
3 0
3 years ago
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