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3 years ago

14

A new computer owner creates a password consisting of two characters. the first character is a letter of the alphabet and the se

cond character is a digit (0,1,2,3,…,9). how many different passwords are possible?

1 answer:

hichkok12 [17]3 years ago

3 0

The number of letters is 26 in the English alphabet.

The number of digits from 0 ... 9 is 10

Therefore he can create 26 * 10 = 260 different passwords. <<<< Answer

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Kay and Allen sell cell phones. Last month Kay sold 17 more cell phones than Allen. Together they both sold 117 cell phones. How

cricket20 [7]

Answer:

Step-by-step explanation:

K = A + 17

K + A = 117

A + 17 + A = 117

2A + 17 = 117

2A = 117 - 17

2A = 100

A = 100/2

A = 50 <=== what Allen sold

K + A = 117

K + 50 = 117

K = 117 - 50

K = 67 <==== what Kay sold

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3 years ago

What happens as the triangle goes from obtuse to acute

jeka57 [31]

Answer: the degree will go down 90 degrees

Step-by-step explanation: An obtuse triangle is one that has an angle greater than 90°. An acute triangle is defined as a triangle in which all of the angles are less than 90°.

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2 years ago

F(y)=2y^3-y^2+2y-1/y^3-y^2+y-1 and g(y)=2y^2-3y+1/4y^2-4y+1

ICE Princess25 [194]

Answer:

16y +14x

Step-by-step explanation:

2y+4y+=6y

5x+12x=17x

17x-4

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2 years ago

A class survey in a large class for first-year college students asked, “About how many minutes do you study on a typical weeknig

Anika [276]

Answer: (110.22, 125.78)

Step-by-step explanation:

The confidence interval for the population mean is given by :-

$\mu\ \pm z_{\alpha/2}\times\dfrac{\sigma}{\sqrt{n}}$

Given : Sample size = 463

$\mu=118\text{ minutes}$

$\sigma=65\text{ minutes}$

Significance level : $\alpha=1-0.99=0.01$

Critical value : $z_{\alpha/2}=z_{0.005}=\pm2.576$

We assume that the population is normally distributed.

Now, the 90% confidence interval for the population mean will be :-

$118\ \pm\ 2.576\times\dfrac{65}{\sqrt{463}} \\\\\approx118\pm7.78=(118-7.78\ ,\ 118+7.78)=(110.22,\ 125.78)$

Hence, 99% confidence interval for the mean study time of all first-year students = (110.22, 125.78)

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3 years ago

Please answer this question for me?

KIM [24]

Answer:

$16.96

Step-by-step explanation:

Do 3.99 times 2 to get 7.98

And then do 4.49 times 2 to get 8.98

Add the results together to get 16.96

3 0

3 years ago

Read 2 more answers