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victus00 [196]
3 years ago
10

Multiply (−4) × (−2) × (−5).

Mathematics
2 answers:
babunello [35]3 years ago
6 0

Answer: -40 or negative forty

Step-by-step explanation:

adoni [48]3 years ago
5 0
Answer: (-4) * (-2)= 8
(-5) * 8= -40

-40

Hope this helps :))
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Eight hot dogs and seven hot dog rolls cost $\$13.60$. Seven hot dogs and eight hot dog rolls cost $\$13.40$. How much, in dolla
Maru [420]

Answer:

$1.80

Step-by-step explanation:

Let the cost of a hot dog = x

The cost of a hot dog roll = y

Eight hot dogs and seven hot dog rolls cost $\$13.60$.

8x + 7x = $13.60..... Equation 1

Seven hot dogs and eight hot dog rolls cost $\$13.40$.

7x + 8x = $13.40...... Equation 2

Combining both Equation

8x + 7x = $13.60..... Equation 1

7x + 8x = $13.40...... Equation 2

Eliminating x

Multiply 1 by 7

Multiply 2 by 8

56x + 49y = 95.2..... Equation 3

56x + 64y = 107.2 ..... Equation 4

Subtracting 4 from 3

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y = 0.8

Cost of one hot dog roll = $0.8

Solving for x

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8x + 7(0.8) = 13.60

8x + 5.6 = 13.60

8x = 13.60 - 5.60

8x = 8.0

x = 8.0/8

x = 1.

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x + y

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= $1.80

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<img src="https://tex.z-dn.net/?f=1-%20%5Cfrac%7Bx%7D%7B2%7D%20%5C%20%20%5Ctextgreater%20%5C%20%20-4" id="TexFormula1" title="1-
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1 - \frac{x}{2} > -4

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x

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