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Alisiya [41]
3 years ago
12

Stella has 63 coins. The coins are a mixture of quarters and dimes. She has a total of $10.80. How many quarters and how many di

mes does Stella have
Mathematics
2 answers:
nika2105 [10]3 years ago
7 0
Q + d = 63....q = 63 - d
0.25q + 0.10d = 10.80

0.25(63 - d) + 0.10d = 10.80
15.75 - 0.25d + 0.10d = 10.80
-0.25d + 0.10d = 10.80 - 15.75
-0.15d = -4.95
d = -4.95/-0.15
d = 33 <=== 33 dimes

q + d = 63
q + 33 = 63
q = 63 - 33
q = 30 <=== 30 quarters
Olenka [21]3 years ago
4 0
So if Stella has 63 coins, then the number of quarters and dimes that she has will equal up to 63.
___ quarters
___ dimes
63 coins in total
$10.80 in total.
I used the guess and check method, which means that I estimated around the number of quarters an dimes, and it took me a few tries but here is what I got, and I checked it as well. You can check it to if you want.

Stella has 30 quarters and 33 dimes to make $10.80 in change.
30 * 0.25 = 7.50
33 * 0.10 = 3.30
7.50 + 3.30 = 10.80

So therefor it is correct 3o of the 3 coins Stella has are quarters, and 33 of them are dimes. Hope this helps and have a wonderful day.
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What is the ratio for consonants to vowels,Vowels to total letters,and all letters to consonants
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Answers:

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

Explanation:

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consonants = anything but a vowel (eg: the letter R)

There are 26 letters in the English alphabet. Five of which are vowels, so there are 26-5 = 21 consonants.

The ratio of consonants to vowels is 21:5

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

The other ratios will follow a similar idea as mentioned in the previous section.

To get the ratio of vowels to total letters, we list the number of vowels first (5) follow by the number of letters (26). A colon separates the two numbers to form the ratio 5:26

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Like in the previous sections, we'll glue together two numbers to form a ratio. In this case, we have 26 letters glued with 21 consonants to form the ratio 26:21 and this represents the ratio of total letters to consonants.

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The third term is the second term times 2.2.

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The third term is 48.4.

The fourth term is the third term times 2.2.

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The fourth term is 106.48.

The fifth term is the fourth term times 2.2.

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The fifth term is 234.256.

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