3 years ago

Can some show the work for this problem.

Mathematics

1 answer:

Nostrana [21]3 years ago

4 0

What problem is there to show work for?

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If n is a positive even number, then the product of (-12)ⁿ will be what

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Answer:

a positive even number.

Step-by-step explanation:

I suggest plugging in random positive even numbers and finding a pattern. (-12)^2 = 144. (-12)^ 4= 20,736. this is because two negatives, when multiplied, turn to a positive. the n is how many times negative 12 is multiplied with itself

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Evaluate. {3−[−4−(6+2)]}⋅(−5) A−75 B−57 C−15 D−9

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Step-by-step explanation:

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600,000+80,000+10 in a form

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4. A solution of 60% fertilizer is to be mixed with a solution of 21% fertilizer to form 234 liters of a 43% solution. How many

solniwko [45]

Given:

A solution of 60% fertilizer is to be mixed with a solution of 21% fertilizer to form 234 liters of a 43% solution.

To find:

The quantity of the 60% solution in the mixture.

Solution:

Let x be the quantity of the 60% solution and y be the quantity of the 21% solution.

Quantity of mixture is 234. So,

$x+y=234$

$x=234-y$ ...(i)

The mixture has 43% fertilizer. So,

$\dfrac{60}{100}x+\dfrac{21}{100}y=\dfrac{43}{100}\times 234$

Multiply both sides by 100.

$60x+21y=10062$ ...(ii)

Using (i) and (ii), we get

$60(234-y)+21y=10062$

$14040-60y+21y=10062$

$-39y=10062-14040$

$-39y=-3978$

Divide both sides by -39.

$\dfrac{-39y}{-39}=\dfrac{-3978}{-39}$

$y=102$

Putting this value in (i), we get

$x=234-102$

$x=132$

Therefore, 132 liters of the 60% solution must be used.

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Robin is making bows to sell at her mother's yard sale. She will use 34 foot of red ribbon and 23 foot of blue ribbon to make ea

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