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ivanzaharov [21]
2 years ago
13

6.75 into a mixed number

Mathematics
2 answers:
Sever21 [200]2 years ago
8 0

Answer:

6 3/4

Step-by-step explanation:

rosijanka [135]2 years ago
3 0

Answer:

6 3/4

Explanation:

0.75 is the result of dividing 3 by 4, which is the previous point but inversed.

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A copy machine makes 253 copies in 5 minutes and 45 seconds. How many copies does it make per minute?
Tomtit [17]

Answer:

Step-by-step explanation:

it makes 253 copies in 5 mins 45 seconds

that is to say, 253 copies in 345 seconds

In 1 minute (60 seconds) it will make X copies.

Lets draft an equation to easily express and simplify the problem.

253 copies = 345 seconds

X copies = 60 seconds

lets cross multiply and solve for X

Theefore:

x * 345 = 254 * 60

345x = 15,240

divide through by 345

x = 15240 / 345

x = 44.17

therefore, the copying machine makes approximately 44 copies per minutes

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3 years ago
Determine the type and number of solutions of −4x2 − 3x + 7 = 0
Mrrafil [7]
Since 3^2 - (-4)(7) must be bigger than 0

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Igoryamba

Answer:

The observed tumor counts for the two populations of mice are:

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Step-by-step explanation:

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This is because the Poisson distribution can be used to approximate the the mean and variance of unknown data (type B mice count rate) using known data (type A mice tumor count rate).  And the Poisson distribution gives the probability of an occurrence within a specified time interval.

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