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3 years ago

7.489 ÷ 0.09. Explain.

Mathematics

2 answers:

liq [111]3 years ago

8 0

it is 83.21111111 ..............................

Kisachek [45]3 years ago

6 0

83.2111111111.

0.09 fits into 7.498, 83.2111111111

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What types of solutions does 6x^2 - 20x + 1 have?

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2 real solutions

Step-by-step explanation:

We can use the determinant, which says that for a quadratic of the form ax² + bx + c, we can determine what kind of solutions it has by looking at the determinant of the form:

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If b² - 4ac > 0, then there are 2 real solutions. If b² - 4ac = 0, then there is 1 real solution. If b² - 4ac < 0, then there are 2 imaginary solutions.

Here, a = 6, b = -20, and c = 1. So, plug these into the determinant formula:

b² - 4ac

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2 years ago

Suppose that a recent poll found that 49% of adults believe that the overall state of moral values is poor. Complete parts (a)

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Answer:

The mean of X is 122.5 and the standard deviation is 7.9.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they believe that the overall state of moral values is poor, or they do not believe this. The probability of an adult believing this is independent of other adults. So we use the binomial probability distribution to solve this question.

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Probability of exactly x sucesses on n repeated trials, with p probability.

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