Numbers that multiply to -168 and add to 17

Mathematics

1 answer:

Fudgin [204]3 years ago

5 0

The two numbers would be -7 and 24.

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What is the value of the expression (25 - 7) X 2 + 4 + 2?

MissTica

Answer:42

Step-by-step explanation:

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3 years ago

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Find the ratio of the areas.

pshichka [43]

9514 1404 393

Answer:

3 -2√2

Step-by-step explanation:

For a regular octagon of side length s, the "flat-to-flat" dimension across the center is s(1+√2). The flat-to-flat dimension of the shaded center octagon is simply s. The ratio of areas is the square of the ratio of linear dimensions, so we have ...

small area / large area = (1/(1+√2))^2 = 1/(3+2√2)

small area/large area = 3 -2√2

_____

The attachment shows octagons after the fashion described here. The side length of the larger one is 2 units. The numbers inside are the areas. They have the ratio shown above.

3 0

2 years ago

What is the value of x, when -25(x - 4) = -55(x - 10)?

Murljashka [212]

-25(x-4)=-55(x-10)
-25x+100 = 55x-550 |+25x
100 = 80x-550 |+550
650 = 80x | /80
65/8 = x
x = 8 1/8
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3 0

2 years ago

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There is a sales tax of $6 on an item that costs $63 before tax. A second item costs $210 before tax. What is the sales tax on t

Law Incorporation [45]

The first thing you should do in this case is calculate the tax percentage.
We then have to apply the following rule of three:
$ 63 ----> 100%
6 $ ------> x
Clearing x we have:
x = (6/63) * (100)
x = 9.523809524%
Therefore the taxes of the second item will be
Tax = (9.523809524 / 100) * 210
Tax = 20 $
Answer:
The sales tax on the second item is:
Tax = 20 $

7 0

3 years ago

If x = -7, evaluate the following expression: (x − 2)(x+14) ——————- x(x + 8)

azamat

Answer:

Step-by-step explanation:

$\text{Given that}~ x = -7\\\\\dfrac{(x-2)(x+14)}{x(x+8)}\\\\\\=\dfrac{(-7-2)(-7+14)}{-7(-7+8)}\\\\\\=\dfrac{(-9)(7)}{-7(1)}\\\\\\=\dfrac{-63}{-7}\\\\\\=9$

3 0

1 year ago

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