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Scrat [10]
2 years ago
6

A tree measured 18 1/2 feet tall. Over the next 7 1/2 years, it grew to be 63 1/2 feet tall. During the 7 1/2years, what was the

average yearly growth rate of the tree?
Mathematics
1 answer:
mrs_skeptik [129]2 years ago
5 0

Step-by-step explanation:

first subtract how tall is was 7 1/2 years ago from hell with all it is now. 57 - 40.5 = 16.5 or 16 1/2 so and the seven and a half years the tree Grace 16.5 with 16 1/2 seats to get the average yearly growth for the 7 1/2 year. You have to divide 16 and 1/2 ft by 7 and 1/2 Tim Wiles it makes it much easier if you change the fractions to decimals

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umka21 [38]

Answer:

x = 1

Step-by-step explanation:

\frac{2}{3} x -  \frac{5}{6}  =  -  \frac{5}{12} x +  \frac{1}{4}  \\  \frac{2}{3}x +  \frac{5}{12}  x =  \frac{1}{4}  +  \frac{5}{6}  \\  \frac{8}{12} x +  \frac{5}{12}x =  \frac{3}{12}  +  \frac{10}{12}  \\  \frac{13}{12} x =  \frac{13}{12}  \\ x = 1

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Which would the phrase "five more than a number" look like as a variable
gladu [14]

Answer:

x + 5

Step-by-step explanation:

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3 years ago
Underage drinking, Part I: Data collected by the Substance Abuse and Mental Health Services Administration (SAMSHA) suggests tha
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Answer:

a. <u>Yes, there are 10 independent trials, each with exactly two possible outcomes, and a constant probability associated with each possible outcome.</u>

b. <u>The probability is 0.2029 or 20.29%</u>

c. <u>The probability is 0.2029 or 20.29%</u>

d. <u>The probability is 0.1671 or 16.71%</u>

e. <u>The probability is 0.9975 or 99.75%</u>

Step-by-step explanation:

<u>a. Yes, there are 10 independent trials, each with exactly two possible outcomes, and a constant probability associated with each possible outcome.</u>

b. Let's use the binomial distribution table, this way:

Binomial distribution (n=10, p=0.697)

 f(x) F(x) 1 - F(x)

x Pr[X = x] Pr[X ≤ x]

0 0.0000 0.0000

1 0.0002 0.0002

2 0.0016 0.0017

3 0.0095 0.0112

4 0.0384 0.0496

5 0.1059 0.1555

6 <u>0.2029</u> 0.3584

7 0.2668 0.6252

8 0.2301 0.8553

9 0.1176 0.9729

10 0.0271 1.0000

<u>The probability is 0.2029 or 20.29%</u>

c. If 69.7% of 18-20 years old consumed alcoholic beverages in 2008, therefore, 30.3% did not and the binomial distribution table is:

Binomial distribution (n=10, p=0.303)

 f(x) F(x) 1 - F(x)

x Pr[X = x] Pr[X ≤ x]

0 0.0271 0.0271

1 0.1176 0.1447

2 0.2301 0.3748

3 0.2668 0.6416

4 <u>0.2029</u> 0.8445

5 0.1059 0.9504

6 0.0384 0.9888

7 0.0095 0.9983

8 0.0016 0.9998

9 0.0002 1.0000

10 0.0000 1.0000

<u>The probability is 0.2029 or 20.29%</u>

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x Pr[X = x] Pr[X ≤ x]

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1 0.0294 0.0319

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3 0.3109 0.4779

4 0.3576 0.8355

5 0.1645 1.0000

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Step-by-step explanation:

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Answer:

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