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dybincka [34]
2 years ago
10

A school custodian discovered a leak in a water pipe. the custodian found that 1,920 fluid ounces of water had leaked out. How m

any gallons of water is this? Use the conversion factor : 1 gallon over 128 fluid ounces
Mathematics
2 answers:
professor190 [17]2 years ago
7 0
15 gallons

Explanation:

Since there are 128 fluid ounces in a gallon, you would divide the amount of fluid ounces (1,920) by 128 because by dividing these two numbers, it will show you how many gallons you have.

1 x
——- = ——-
128 1920

1920=128x

Divide both sides by 128 and you should get 15.

Note: the math I just used is algebra 1 level so if you don’t understand the algebraic explanation that’s just fine. :)
bulgar [2K]2 years ago
4 0

Answer:

15 gallons

Step-by-step explanation:

Hope it helps. :)

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7. In a state lottery, a player must choose 8 of the numbers from 1 to 40. The lottery commission then performs an experiment th
Vlad1618 [11]

Answer:a) P(8 of the players numbers are drawn)=1.3×10^-8

b) P(7 of the players number are drrawn)=3.33×10^-c) P(at least 6 of the players number were drawn)=1.84×10^-4

Step-by-step explanation:

Players has 8 combinations of numbers from 1-40. The outcome S contains all the combinations of 8 out of 40

a) P(8 of the players numbers are drawn)= 1/40/8= 1.3×10^-8

There are one in hundred million chances that the draw numbers are precisely the chosen ones.

b) Number of ways of drawing 78 selected numbers from 1-40=8×(40-7)

8×32

P(7 of the players number are drawn)=8×32/40 =3.33×10^-6.

There are approximately 300,000 chances that 7 of the players numbers are chosen

c) P(at least 6 players numbers are drawn)= 32/2×(8/6) ways to draw.

P(at least 6 players numbers are drawn)=P(all 8 chosen are drawn)+P(7 players numbers drawn)+P(6 chosen are drawn) = 1+ 8 x32/40/8 +[8\6 ×32/2]

P(at least 6 players numbers are drawn) = 1.84×10^-4.

There are approximately 5400chances that at least6 of the numbers drawn are chosen by the player.

5 0
3 years ago
Jessica is selling tickets for her softball team for $10 a ticket. Laurie is selling tickets for her softball team for $6 a tick
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Answer:

90 tickets

Step-by-step explanation:

let the number of tickets be x

and the total amount each has be y

For Jessica

the amount is

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for Laurie the amount is

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y=360+6x-------2

to find the number of the tickets that will make them have the same amount, let us equate 1 and 2

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2 years ago
Which of the following represents the sum of the polynomials below?
zysi [14]

Answer:

A

Step-by-step explanation:

First, you have to align the like terms next to each other so that it will be easier to combine like terms. (Like terms have the same variables and powers)

6x^3+(-2x^3)+2x^2+5x^2+9x+3x

Combine like terms:

(When combining like terms all you have to do is add/subtract the coefficients, number in front of variables, and leave the variable and exponents)

6x^3+(-2x^3)= > 6x^3-2x^3=4x^3

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So, we get 4x^3+7x^2+12x

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1 year ago
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