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3 years ago

Which phrase describes the algebraic expression 5t-2 ?

Mathematics

2 answers:

viva [34]3 years ago

7 0

Answer:

The last one, / 2 less than 5 times a number

Step-by-step explanation:

JulsSmile [24]3 years ago

3 0

Answer:

Step-by-step explanation:

according to my calculations the phrase 5t-2 is going according to the population of strategy so it would be 2 less than 5 times a number

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Although cities encourage carpooling to reduce traffic congestion, most vehicles carry only one person. For example, 64% of vehi

ira [324]

Answer:

a) 0.7291 is the probability that more than half out of 10 vehicles carry just 1 person.

b) 0.996 is the probability that more than half of the vehicles carry just one person.

Step-by-step explanation:

We are given the following information:

A) Binomial distribution

We treat vehicle on road with one passenger as a success.

P(success) = 64% = 0.64

Then the number of vehicles follows a binomial distribution, where

$P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}$

where n is the total number of observations, x is the number of success, p is the probability of success.

Now, we are given n = 10

We have to evaluate:

$P(x \geq 6) = P(x =6) +...+ P(x = 10) \\= \binom{10}{6}(0.64)^6(1-0.64)^4 +...+ \binom{10}{10}(0.64)^{10}(1-0.79)^0\\=0.7291$

0.7291 is the probability that more than half out of 10 vehicles carry just 1 person.

B) By normal approximation

Sample size, n = 92

p = 0.64

$\mu = np = 92(0.64) = 58.88$

$\sigma = \sqrt{np(1-p)} = \sqrt{92(0.64)(1-0.64)} = 4.60$

We have to evaluate the probability that more than 47 cars carry just one person.

$P(x \geq 47)$

After continuity correction, we will evaluate

$P( x \geq 46.5) = P( z > \displaystyle\frac{46.5 - 58.88}{4.60}) = P(z > -2.6913)$

$= 1 - P(z \leq -2.6913)$

Calculation the value from standard normal z table, we have,

$P(x > 46.5) = 1 - 0.004 = 0.996 = 99.6\%$

0.996 is the probability that more than half out of 92 vehicles carry just one person.

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3 years ago

The value of 3' x10, when x = -2, can be

Westkost [7]

I hope someone solves your problem :)

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2 years ago

Joe walked 4/9 of a mile in 4/5 of an hour. What is his unit rate in miles per hour? 4/9 over 4/5 = 5/9 mile per hour 4/5 over 4

Vilka [71]

divide 4/9 by 4/5 is your answer

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3 years ago

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Find the sum of the geometric sequence –3, 15, –75, 375, … when there are 9 terms and select the correct answer below.

ZanzabumX [31]

The correct answer to the question presented above would be letter A. -976, 563. I got this through solving with the first number of the set, then getting the ratio of the data set (which is -5) and the number of terms in the set. Thus, I arrived with the answer, -976, 563.

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Imagine that you are swinging back and forth a chain with a locket on the end. Assuming that you are on Earth so that gravity is

erica [24]

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Time = 2 * PI * sq root [(.43) / 9.81]
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Please see this page about pendulums:
http://www.1728.org/pendulum.htm

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