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2 years ago

Two times the quantity of eight times a number plus two is equal to three the quantity of two times the same number minus seven

Mathematics

1 answer:

Effectus [21]2 years ago

7 0

The unknown number is - 2.5

Let the number = n

The equation will be formed as follows;

eight times a number plus two = 8n + 2

Two times the quantity of eight times a number plus two = 2(8n + 2)
two times the same number minus seven = 2n - 7
three the quantity of two times the same number minus seven = 3(2n-7)

Our final equation becomes;

2(8n + 2) = 3(2n-7)

Simplify as follow, to determine the unknown number;

16n + 4 = 6n - 21

16n - 6n = -25

10n = -25

n = -2.5

Thus, the unknown number is - 2.5

Learn more here: brainly.com/question/13818690

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Answer:

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Schach [20]

Answer:

700 pages

Step-by-step explanation:

I first found out how many pages were in 1% so I divided 28 by 4.

I got 7 so I multiplied it by 100 and 700 was the answer.

Basically:

28÷4 = 7

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3 years ago

The length of a rectangle is 4 more than twice the width. The perimeter is 74 feet. Find the length and width of the rectangle.

mafiozo [28]

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3 years ago

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ivann1987 [24]

Answer:

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3 years ago

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patriot [66]

Converting -4 to polar form gives $-4=4\exp(i\pi)$ .

Then the 4th roots of -4 would be the numbers

$4^{1/4}\exp\left(i\dfrac{\pi+2k\pi}4\right)$

where <em>k</em> is taken from {0, 1, 2, 3}.

So we have

$z_1=4^{1/4}\exp\left(\dfrac{i\pi}4\right)=\sqrt2\left(\cos\dfrac\pi4+i\sin\dfrac\pi4\right)=1+i$

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$z_3=\sqrt2\left(\cos\dfrac{5\pi}4+i\sin\dfrac{5\pi}4\right)=-1-i$

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3 years ago