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Gemiola [76]
3 years ago
11

8. Beatrice has 20 coins in quarters and nickels. The total value of her coins is $2.20. How many mickels and quartiers

Mathematics
2 answers:
kupik [55]3 years ago
6 0

Answer:

40

Step-by-step explanation:

Inga [223]3 years ago
3 0

Answer:

6 quarters, 14 Nickels.

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Solve the system by the elimination method.<br><br> 2a + 3b = 6<br> 5a + 2b - 4 = 0
mariarad [96]
2a + 3b = 6 --> Equation 1
5a + 2b = 4 --> Equation 2
Equation 1 * 5 --> 10a + 15b = 30
Equation 2 * 2 --> 10a + 4b = 8
Equation 1 - Equation 2 --> 11b = 22 --> b = 2
Sub b=2 in Equation 1 (or 2, either works):
2a + 3b = 6
2a + 3(2) = 6
2a + 6 = 6
2a = 0
a = 0

b = 2, a = 0

5 0
3 years ago
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What is -2(3x+12y-5-17x-16y+4) simplified?
CaHeK987 [17]
28x + 8y + 2 is the simplified version.
7 0
3 years ago
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If 5x+5=50 <br> then solve for x
pav-90 [236]

Answer:

9

Step-by-step explanation:

5 x 9 is 45 plus 5 gives you 50

6 0
2 years ago
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a language arts test is worth 100 points there is a total of 26 questions . there are spelling word questions that ae worth 2 po
natka813 [3]

10 question of spelling words and 16 questions of vocabulary are present

<em><u>Solution:</u></em>

Let "x" be the number of spelling word questions

Let "y" be the number of vocabulary word question

<em><u>There is a total of 26 questions. Therefore, we get</u></em>

number of spelling word questions + number of vocabulary word question = 26

x + y = 26 --------- eqn 1

<em><u>There are spelling word questions that worth 2 points each and vocabulary word question worth 5 points each</u></em>

The language arts test is worth 100 points

Therefore, we frame a equation as:

number of spelling word questions x 2 + number of vocabulary word question x 5 = 100

x \times 2 + y \times 5 = 100

2x + 5y = 100 --------- eqn 2

<em><u>Let us solve eqn 1 and eqn 2</u></em>

From eqn 1,

x = 26 - y ------- eqn 3

<em><u>Substitute eqn 3 in eqn 2</u></em>

2(26 - y) + 5y = 100

52 - 2y + 5y = 100

3y = 100 - 52

3y = 48

<h3>y = 16</h3>

<em><u>Substitute y = 16 in eqn 3</u></em>

x = 26 - 16

<h3>x = 10</h3>

Thus 10 question of spelling words and 16 questions of vocabulary are present

4 0
3 years ago
Tony owns a special pet store that sells only snakes and elephants.Currently he has a total of 11 snakes and elephants in stock.
kykrilka [37]

Snakes have no legs.  

Elephants have four.  

12/4 = 3.  

11 - 3 = 8  

He has 8 snakes.


Hope this helps!

4 0
3 years ago
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