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Ray Of Light [21]
3 years ago
8

Find the unit rate: 297 words in 5.5 minutes

Mathematics
1 answer:
MArishka [77]3 years ago
7 0

Answer:

54 words per minute

Step-by-step explanation:

the ratio of 297:5.5 is equivalent to 54:1

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What's the degree of the polynomial? P(x)= 7x^7+2x^5+7x+7
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Answer:

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General Formulas and Concepts:

  • Degree of Polynomial is determined by the highest power

Step-by-step explanation:

<u>Step 1: Define function</u>

P(x) = 7x⁷ + 2x⁵ + 7x + 7

<u>Step 2: Identify</u>

7x⁷ is the largest term.

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What is 8/8 in word form?
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Step-by-step explanation:

The 8/8 word form is EIGHT divided by EIGHT

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Step-by-step explanation:

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larisa86 [58]

Answer:

x=40 degrees

Step-by-step explanation:

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After an extensive advertising campaign, the manager of a company expects the proportion of potential customers that recognize a
lina2011 [118]

Answer:

Step-by-step explanation:

Hello!

The study variable is:

X: number of customers that recognize a new product out of 120.

There are two possible recordable outcomes for this variable, the customer can either "recognize the new product" or " don't recognize the new product". The number of trials is fixed, assuming that each customer is independent of the others and the probability of success is the same for all customers, p= 0.6, then we can say this variable has a binomial distribution.

The sample proportion obtained is:

p'= 54/120= 0.45

Considering that the sample size is large enough (n≥30) you can apply the Central Limit Theorem and approximate the distribution of the sample proportion to normal: p' ≈ N(p;\sqrt{\frac{p(1-p)}{n} })

The other conditions for this approximation are also met: (n*p)≥5 and (n*q)≥5

The probability of getting the calculated sample proportion, or lower is:

P(X≤0.45)= P(Z≤\frac{0.45-0.6}{\sqrt{\frac{0.6*0.4}{120} } })= P(Z≤-3.35)= 0.000

This type of problem is for the sample proportion.

I hope this helps!

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3 years ago
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