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2 years ago

10

Monica's credit card statement shows she onwed $250 she made a payment of $200 then she charged for $38 for gasoline she returne

d the bathtub for a refund of $15 what is her new balance

1 answer:

Aleonysh [2.5K]2 years ago

4 0

Answer:

73

Step-by-step explanation:

250 - 200 + 38 - 15 = 73

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A hunter shot 7 ducks. The hunter's dog recovered 5/7 of the ducks. How many ducks were recover

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Answer:

5

Step-by-step explanation:

Just multiply 5/7 by 7 since his dog retrieved 5/7 out of the 7 ducks he shot.

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3 years ago

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dolphi86 [110]

Answer:

1. D) 15

2. B) -3

Step-by-step explanation:

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Find the volume of the parallelepiped with adjacent edges t = 3j – 4j – 6k, u = 3i – 7j – 7k and v = 5i + j + 3k.

Assoli18 [71]

Answer:

94 cubic units

Step-by-step explanation:

The volume of this parallelepiped (the product of area of its base and height) is equal to the absolute value of the scalar triple product $|\vec{t}\cdot (\vec{u}\times \vec{v})|$

Since

$\vec{t}=3\vec{i}-4\vec{j}-6\vec{k}=(3,-4,-6)\\ \\\vec{u}=3\vec{i}-7\vec{j}-7\vec{k}=(3,-7,-7)\\ \\\vec{v}=5\vec{i}+\vec{j}+3\vec{k}=(5,1,3)$

we have

$|\vec{t}\cdot (\vec{u}\times \vec{v})|=\left|\left|\begin{array}{ccc}3&-4&-6\\3&-7&-7\\5&1&3\end{array}\right|\right|=|3\cdot (-7)\cdot 3+(-4)\cdot (-7)\cdot 5+3\cdot 1\cdot (-6)-5\cdot (-7)\cdot (-6)-3\cdot (-7)\cdot 1-3\cdot (-4)\cdot 3|=|-63+140-18-210+21+36|=|-94|=94\ un^3.$

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2 years ago

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mote1985 [20]

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2 years ago

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4vir4ik [10]

Answer:

Option A

Step-by-step explanation:

We use the slope formula:

$\frac{y_{2}-{y_{1}} }{x_{2} -x_{1} }$

We substitute the values given and see which option corresponds with our equation:

$\frac{-4-(-6)}{-2-3}$
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2 years ago

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