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3 years ago

What's the answer to 2+{8-2[32+5(1+2)]}

Mathematics

1 answer:

frozen [14]3 years ago

3 0

2+{8-2[32+5(1+2)]}
2+{8-2[32+5(3)]}
2+{8-2[32+15]}
2+{8-2[47]}
2+{8-94}
2+{-86}
-84

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A metalworker has a metal alloy that is 25% copper and another alloy that is 70% copper. How many kilograms of each alloy shou

Crank

Answer:

The metal worker should use 10 kgs of 25% copper alloy and 40kgs of 70% copper alloy to make it

Step-by-step explanation:

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3 years ago

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Captain Ishaan has a ship, the H.M.S Crimson Lynx. The ship is four furlongs from the dread pirate Michael and his merciless ban

OverLord2011 [107]

Answer: 0

Step-by-step explanation:

The probability of event A happening, then event B, is the probability of event A happening times the probability of event B happening given that event A already happened.

In this case, event A is the Captain hitting the pirate ship and event B is the pirate hitting the Captain's ship.

The Captain fires first, so his ship can't be sunk before he fires his cannons.

So, the probability of the Captain hitting the pirate ship is 2/5

If the Captain hit the pirate ship, the pirate has no chance of firing back.

So, the probability of the pirate hitting the Captain's ship given the Captain hitting the pirate ship is 0.

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4 years ago

Let line $l_1$ be the graph of $3x + 4y = -14$. Line $l_2$ is perpendicular to line $l_1$ and passes through the point $(-5,7)$.

Vinil7 [7]

$3x+4y=-14\implies y=-\dfrac{3x+14}4$

and so $\ell_1$ has slope -3/4. Then any line perpendicular to $\ell_1$ has slope 4/3.

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so that $m=\frac43$ and $b=\frac{41}3$ , which gives

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4 years ago

Which property is shown below?

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Answer:

Step-by-step explanation:

The identity property for addition tells us that zero added to any number is the number itself.

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3 years ago

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I honestly have no clue how to do this

Mashcka [7]

Answer:

Angle 1: 95 degrees

Angle 2: 85 degrees

Angle 3: 95 degrees

Step-by-step explanation:

Vertical angles are opposite and equal so in this case angle 1 and 3 are vertical and so are 2 and 85°

So that means angle 2 also equals 85 degrees and because of supplementary angles the other angle must add up to equal 180 degrees

85 + ? = 180

?=95

So both angle 1 and 3 equal 95 degrees

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3 years ago