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3 years ago

What are the first 5 terms of the sequence Tn= 2n-3?(Please answer quickly)

Mathematics

1 answer:

Anna11 [10]3 years ago

3 0

Answer:

-1, 1, 3, 5, 7

Step-by-step explanation:

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If these triangles are similar,name the missing angles, (25 points )

Ira Lisetskai [31]

Answer:

170

Step-by-step explanation:

4 0

3 years ago

CCA has stated in 2017 that 36.5 % of its students are first generation college students.Suppose you sample 15 CCA students and

nignag [31]

Answer:

Step-by-step explanation:

The formula for binomial distribution is expressed as

P(x = r) = nCr × p^r × q^(n - r)

Where

x represent the number of successes.

p represents the probability of success.

q = (1 - p) represents the probability of failure.

n represents the number of trials or sample.

From the information given,

p = 36.5% = 36.5/100 = 0.365

q = 1 - p = 1 - 0.365

q = 0.635

n = 15

a) P(x = 0) = 15C0 × 0.365^0 × 0.635^(15 - 0) = 0.0011

P(x = 1) = 15C1 × 0.365^1 × 0.635^(15 - 1) = 0.0095

P(x = 2) = 15C2 × 0.365^2 × 0.635^(15 - 2) = 0.038

P(x = 3) = 15C3 × 0.365^3 × 0.635^(15 - 3) = 0.095

P(x = 4) = 15C4 × 0.365^4 × 0.635^(15 - 4) = 0.16

P(x = 5) = 15C5 × 0.365^5 × 0.635^(15 - 5) = 0.21

k P(X = k)

0 0.0011

1 0.0095

2 0.038

3 0.095

4 0.16

5 0.21

b) mean = np = 15 × 0.365 = 5.475

c) standard deviation = √npq

= √15 × 0.365 × 0.635

= 1.86

d) z = (x - mean)/standard deviation

x = 2

z = (2 - 5.475)/1.86 = - 1.87

6 0

3 years ago

An urn contains balls numbered 1 through 20. A ball is chosen, returned to the urn, and a second ball is chosen. What is the pro

stira [4]

<h2>Answer:</h2>

The probability is:

$\dfrac{1}{400}$

<h2>Step-by-step explanation:</h2>

It is given that:

An urn contains balls numbered 1 through 20.

A ball is chosen, returned to the urn, and a second ball is chosen.

This means that this is a case of a replacement.

Hence, one of the event is independent of the other.

Now we know that the probability to get a particular number of ball is:

$\dfrac{1}{20}$

( Since, there are total 20 balls and a ball of one particular number is just unique )

i.e. $\text{Probability of getting a 8}=\dfrac{1}{20}$

Hence, the probability that the first and second balls will be a 8 is:

$=\dfrac{1}{20}\times \dfrac{1}{20}\\\\\\=\dfrac{1}{400}$

7 0

3 years ago

Read 2 more answers

F f(x) = 3x + 2 and g(x) = x2 + 1, which expression is equivalent to (f circle g) (x)?

seraphim [82]

f°g mean apply g(x) and then use result of g(x) as "x" in f(x)

so as g(x) = x² +1 and f(x) = 3x+2

so if we call g(x) X we have

f( X) = 3 X +2

now we replace " X" for it's value

f(X) = 3 ( x² +1) +2

f(X) = 3x² +3 +2

f(X) = 3x² +5

so f°g = 3x² +5

8 0

2 years ago

3. A baseball diamond is a square that is 90 feet on each side. If a player throws the ball from 2nd base to

ch4aika [34]

Answer:

90 feet

Step-by-step explanation:

180-90=90

5 0

2 years ago

What are the first 5 terms of the sequence Tn= 2n-3?(Please answer quickly)​

What are the first 5 terms of the sequence Tn= 2n-3?(Please answer quickly)