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ss7ja [257]
3 years ago
12

Which expression is equivalent to (-2)(a+6)

Mathematics
1 answer:
Eva8 [605]3 years ago
3 0
The equivalent answer to this expression is found by using the distributive property.
(-2a - 12)
Simply multiply the negative 2 into the second parenthesis.
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Compound inequality that represents all the numbers between -4 and 6
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-4≥x≤6

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A cylinder has dimensions that give the following ratio.
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Step-by-step explanation:

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Evaluate the function f(x) = -4x + 2, when x = -1.
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3 0
2 years ago
Alex has 84 quarters and nickels worth a total of $17.80.
Hunter-Best [27]

The equation which can be used to find the number of quarters and nickels is; n + q = 84, 0.05n + 0.25q = 17.80.

<h3>Quarters and nickels</h3>

  • Total coins = 84
  • Total value = $17.80

let

  • Number of quarters = q
  • Number of nickels = n

n + q = 84

0.05n + 0.25q = 17.80

From equation (1)

n = 84 - q

Substitute into (2)

0.05n + 0.25q = 17.80

0.05(84 - q) + 0.25q = 17.80

4.2 - 0.05q + 0.25q = 17.80

- 0.05q + 0.25q = 17.80 - 4.2

0.20q = 13.60

q = 13.60 / 0.20

q = 68

Substitute q = 68 into

n + q = 84

n + 68 = 84

n = 84 - 68

n = 16

Therefore, the number of quarters and nickels are 68 and 16 respectively.

Learn more about quarters and nickels:

brainly.com/question/17127685

#SPJ1

6 0
2 years ago
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