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qaws [65]
3 years ago
10

Please simplify the expression.

Mathematics
1 answer:
IRINA_888 [86]3 years ago
8 0

Answer:

1) 15a - 15c + 3

2) -7n + 31 + 13m + 7p  or  13m - 7n + 7p + 31

3) 44x + 6y + 3

4) 9m - 6n + 23

Step-by-step explanation:

1. Add like terms. 6a + 9a=15a. -8c - 7c=-15c

2. Add like terms. You can rearrange them in descending order based off of exponents and variables.

3. Multiply what's in parentheses first (distribute the 6). It should end up being (6y + 42x). Then you add like terms and put in descending order.

4. Distribute the (-3) to what in the parentheses. It should end up being (-6n + 15 - 3m). Then you add like terms and put the expression in descending order.

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Ksenya-84 [330]
I'm not sure about the formula.
But since 38/2=19
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a possible formula could be:
L=38/2-2
3 0
3 years ago
4.4 + [4 • 1/4 + 8.6]
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A container holds a combination of nickels and quarters. There are 156 coins in all, and their total value is $21.60. The system
Tatiana [17]
X+y=156
<span>0.05x+0.25y=21.6

-1/4*/ x+y=156
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</span>1/20x+1/4y=216/10
<span>+--------------------------
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x=87

</span>x+y=156
<span>
87+y=156    y=69

this question answer is </span><span>87 nickels and 69 quarters</span><span>

</span>
3 0
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