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kondor19780726 [428]

3 years ago

14

A company uses a computer program to create coupon codes for customers to use on its website. The codes are made up from the sym

bols !, #, &, *, as well as any letter from the alphabet.
The company uses the program to make a code, one character at a time.

What is the probability the first character is a symbol?

Please answer as a decimal rounded to the nearest hundredth.

2 answers:

Alja [10]3 years ago

6 0

0.15 is the answer. Hope this helps!

AnnyKZ [126]3 years ago

6 0

Total number of possible outcomes= 4 symbols + 26 letters =30 outcomes

Event is getting a symbole.

P(symbole) = 4/30 =0.13

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Decrease £120 by 45%

Dovator [93]

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120 -54 = 66 £

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Jack is trying to make extra money on his summer vacation from school. He works two different jobs, earning $9 per hour washing

Sveta_85 [38]

Answer:

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Step-by-step explanation:

Given that:

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Earnings per hour for walking dogs = $6

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Number of hours taken for walking dogs = $d$

Earnings for $w$ hours for washing cars = Per hour earnings multiplied by number of hours = $9 $w$

Earnings for $d$ hours for walking dogs = Per hour earnings multiplied by number of hours = $6 $d$

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Now, given that

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Therefore, total earnings by both = 9 $\times$ 5 + 6 $\times$ 2 = <em>$57</em>

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Solve mathematics question, please:) Unanswered re-asked question.

Fiesta28 [93]

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A population of mice is increasing exponentially. On Monday there were 120 most. One month later there were 132 most. Ready func

djyliett [7]

Answer:

$y=120 * 1.1^x$ --- function

The monthly rate is 10%

Step-by-step explanation:

Given

Let

$x \to months$

$y \to mice$

So, we have:

$(x_1,y_1) = (0,120)$ --- Monday

$(x_2,y_2) = (1,132)$ --- One month later

Required

The function

The function is represented as:

$y=ab^x$

In $(x_1,y_1) = (0,120)$ , we have:

$120 = a * b^0$

$120 = a * 1$

$120 = a$

$a=120$

In $(x_2,y_2) = (1,132)$ , we have:

$132 = a * b^1$

$132 = a * b$

Substitute: $a=120$

$132 = 120 * b$

Solve for b

$b = \frac{132}{120}$

$b = 1.1$

So, the function is:

$y=ab^x$

$y=120 * 1.1^x$

To calculate the monthly rate (r), we have:

$y =a(1 + r)^x$

Compare to: $y =ab^x$

$1 + r = b$

Make r the subject

$r = b-1$

Substitute $b = 1.1$

$r = 1.1-1$

$r = 0.1$

Express as percentage

$r = 0.1*100\%$

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Natalka [10]

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