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Kryger [21]
4 years ago
10

Which expression is a factor of this polynomial x^3+2x^2-9x-18

Mathematics
1 answer:
REY [17]4 years ago
4 0

Answer: (x+2)

Step-by-step explanation:

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109.06 in scientific notation is
kaheart [24]
The correct answer is 1.0906
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3 years ago
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2.5 c =<br> fl oz<br> Cups of water for your thirsty dog and cat
inn [45]

Answer:

20 fluid ounces

Step-by-step explanation:

Each cup contains 8 fl oz. This means that if you multiply 2.5 times 8, you get 20.

If you want to break it down more, you can multiply the 2 * 8, then multiply the .5 * 8. Then add the answers together. So.... you get 16 + 4 = 20 fl oz.

7 0
3 years ago
The area of a rectangle is (25x2 − 9y2) square units. Determine the dimensions of the rectangle by factoring the area expression
8_murik_8 [283]

Answer:

(5x+3y) and (5x-3y)

Step-by-step explanation:

From the concept on difference between two squares;

a² - b² = (a+b)(a-b)

Therefore;

25x² - 9y² = (5x+3y) (5x-3y)

Therefore the dimensions of the square are (5x+3y) and (5x-3y)

6 0
4 years ago
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Why do you multiply by a power of 10 when writing a repeating decimal as a rational number
oee [108]

The idea is to shift the number enough so that you can cancel the repeating digits by subtraction.

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Example

0.181818_18 multiplied by 100 gives

18.181818_18

Subtracting the original number gives

18.000000_00 . . . . . . all the repeating digits have been eliminated

When you multiply by 100 and subtract 1 times the original, you have multiplied by 99. Thus the value of the original number is 18/99 or 2/11.

4 0
3 years ago
Is the equation -x=1-y and 2+y=x+1 coincident, intersecting, or parallel
yarga [219]
\bf x=1-y\implies x+y=1\implies y=-x+1\\\\&#10;-------------------------------\\\\&#10;2+y=x+1\implies y=x+1-2\implies y=x-1

notice the equations in slope-intercept form, the first one has a slope of -1, the second one has a slope of 1.

if the slopes are equal, and the constant is different, they lines are parallel.

if the slopes are equal, and the constant is the same the equations are exactly the same thing, and the lines are coincident, on slapped on top of the other.

if the slopes differ, like here, then they have a solution, where they intersect.
4 0
3 years ago
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