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CaHeK987 [17]
3 years ago
15

A change machine changes dollar bills into quarters and nickels. If you receive 12 coins after inserting a dollar bill, how many

nickels did you receive?
Mathematics
2 answers:
rjkz [21]3 years ago
8 0
10 coins are nickels and 2 coins are quarters
Rudik [331]3 years ago
3 0
Well, given that a quarter equals 5 nickels, we can reason that, in order to get 12 coins, we would have to get 10 nickels (equals 50 cents) and 2 quarters (the other 50 cents, to make a dollar).

You didn't say whether you needed this expressed in a mathematical formula, but knowing the answer already, it shouldn't be hard to come up with one if necessary.

Hope this helps.
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On a biased dice the probability of getting 1 is 0.3. The ice is rolled 150 times. How many ones would you expect to roll?
Montano1993 [528]

Answer:  45

=====================================================

Work Shown:

n = number of rolls = 150

p = probability of rolling a "1" = 0.3

n*p = expected number of "1"s that show up out of the 150 rolls

n*p = 150*0.3

n*p = 45

We expect about 45 ones will show up.

8 0
2 years ago
What is the product of 65(cos(14°)+ i sin(14°)) and 8(cos(4°)+ i sin(4°))
saveliy_v [14]

The product of the complex numbers 65(cos(14°)+ i sin(14°)) and 8(cos(4°)+ i sin(4°)) is 520[cos(18) + isin(18)]

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Complex number is in the form z = a + bi, where a and b are real numbers.

The product of the complex numbers 65(cos(14°)+ i sin(14°)) and 8(cos(4°)+ i sin(4°)) is:

z = 65 * 8 [cos(14 + 4) + isin(14 + 4)] = 520[cos(18) + isin(18)]

Find out more on equation at: brainly.com/question/2972832

#SPJ1

3 0
2 years ago
If the life of a brake lining costing $3.20 is 40,000 miles what is its cost per 1,000 miles
Sunny_sXe [5.5K]

Answer:

.08

Step-by-step explanation:

COMMENT IF YOU NEED WORK

6 0
3 years ago
Every year. Miguel receives $20 for his birthday, plus $1 for each year of his age. Laureen receives $10 for her birthday and $2
sergey [27]

Answer:

NO

Step-by-step explanation: no because Lauren will receive 26 because 10 = (8 x 2) which equals 26 and Migule is 20 + ( 1 x 10) which = 30 so not the same this and simple and cute reason hope it right and helped.

3 0
3 years ago
Read 2 more answers
The selling price of an item is $600. After 6 months of not selling, it is marked down by 30% . After another 6 months of not se
Bingel [31]

The sale price after both markdowns will be $336

<em><u>Explanation</u></em>

The selling price of an item is $600. After 6 months of not selling, it is marked down by 30%

So, the marked down amount after 6 months =\$ 600*0.30= \$180

and the selling price after first 6 months will be: \$600-\$180=\$420

After another 6 months of not selling , it is further marked down by 20%. So, the marked down amount now = \$420*0.20=\$84

Thus, the final selling price after all markdowns =\$420-\$84=\$336

4 0
3 years ago
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