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nordsb [41]
4 years ago
7

Bella has $0.66 worth of

Mathematics
2 answers:
AlladinOne [14]4 years ago
6 0

Answer:

12 nickels and 6 pennies

Softa [21]4 years ago
6 0
<h3>Answers:  6 pennies,  12 nickels</h3>

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

Work Shown:

$0.66 = 66 cents

n = number of nickels

p = number of pennies

n = p+6 because she has 6 more nickels than pennies

5n = total amount of money in cents from just the nickels

1p = total amount of money in cents from just the pennies

5n+1p = total amount of money of all the coins (nickels+pennies)

5n+1p = 66 cents

5n+p = 66

5(n) + p = 66

5(p+6) + p = 66 ... replace every n with p+6

5p+30+p = 66

6p+30 = 66

6p = 66-30

6p = 36

p = 36/6

p = 6

Bella has 6 pennies.

n = p+6

n = 6+6

n = 12

Bella has 12 nickels.

---------------

Check:

6 pennies = 6*1 = 6 cents

12 nickels = 12*5 = 60 cents

(6 pennies)+(12 nickels) = (6 cents) + (60 cents) = 66 cents = $0.66

12 nickels is 6 more than the number of pennies (6).

Answers are confirmed.

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Answer:

The chance of an average six-sided number cube landing one one number is 1/6, or approximately 16.67%. When rolling a number cube 100 times, the average number of times it lands on any specific number should be fairly close to 16.67.

A 6 being rolled 42 times and 33 times means that it is <em>very likely</em> not to be a standard number cube. Although we cannot know for certain, the chance of this happening is very low.

3 0
3 years ago
Binh has to write an 8-page report. If he has written 3/4 of his report so far, how many pages has he written?
Eva8 [605]

Answer:

6 pages

Step-by-step explanation:

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How do I explain and show the work for a math word problem of If the baby was 8 lbs. 9 oz. and doubled her weight the first six
harkovskaia [24]

Answer:

5 lb 11⅓ oz

Step-by-step explanation:

First, convert the weight at birth from pound and ounces to just ounces.

8 lb × 16 oz/lb + 9 oz = 137 oz

The baby doubles its weight in the first six months.  That means its weight increases by 137 oz over 6 months.  To find how much weight was gained in 4 months, write a proportion.

137 / 6 = x / 4

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The baby gained 91 ⅓ oz in 4 months, or 5 lb 11⅓ oz.

5 0
4 years ago
A recent survey shows that the probability of a college student drinking alcohol is 0.6. Further, given that the student is over
solong [7]

Answer: 0.5143

Step-by-step explanation:

Probability of students who are over 21 years old = 30% = 0.3

Probability of students who are under 21 years old = 100% - 30% = 70% = 0.7

Probability of drinking alcohol for over 21 = 80% = 0.8

Probability of not drinking alcohol for over 21 = 100%- 80% = 20% = 0.2

Let the probability of the students who are not over 21, that drink alcohol be p.

Total probability of a college student drinking alcohol = (0.3 × 0.8) + (0.7 × p)

0.6 = (0.3 × 0.8) + (0.7 × p)

0.6 = 0.24 + 0.7p

0.7p = 0.6 - 0.24

0.7p = 0.36

p = 0.36/0.7

p = 0.5143

The probability of the students who are not over 21, that drink alcohol is 0.5143.

3 0
4 years ago
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