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2 years ago

What are the numbers whose absolute value is -9

Mathematics

1 answer:

SVEN [57.7K]2 years ago

5 0

Answer:

9 and -9

They would have to look like this: -|9| and -|-9|

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Solve each equation (quadratic pattern)

dusya [7]

Answer: x = 2

Step-by-step explanation:

$2^{2x}-2^x-12=0\\\\\text{Let u = }2^x\\\\u^2-u-12=0\\(u-4)(u+3)=0\\\\u-4=0\quad and\quad u+3=0\\u=4\qquad and\quad u=-3\\\\\text{Substitute u with }2^x\\2^x=4\qquad and \quad 2^x=-3\\2^x=2^2\quad and\quad \text{not possible}\\\boxed{x=2}$

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Answer: x = 0

Step-by-step explanation:

$3^{2x}+3^{x+1}-4=0\\\\3^{2x}+3^x\cdot3^1-4=0\\\\\text{Let u = }3^x\\u^2+3u-4=0\\\\(u+4)(u-1)=0\\\\u+4=0\quad and\quad u-1=0\\u=-4\qquad and\quad u=1\\\\\text{Substitute u with }3^x\\3^x=-4\qquad and\quad 3^x=1\\\text{not possible}\ and\quad 3^x=3^0\\.\qquad \qquad \qquad \qquad \boxed{x=0}$

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Answer: No Solution

Step-by-step explanation:

$4^x+6\cdot 2^x+8=0\\\\2\cdot 2^x+6\cdot 2^x+8=0\\\\\text{Let u = }2^x\\2u+6u+8=0\\8u+8=0\\8u=-8\\u=-1\\\\\text{Substitute u with }2^x\\2^x=-1\\\text{not possible}$

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Answer: No Solution

Step-by-step explanation:

$9^x=3^x-6\\\\3\cdot 3^x=1\cdot 3^x-6\\\\\text{Let u = }3^x\\\\3u=u-6\\2u=-6\\u=-3\\\\\text{Substitute u with }3^x\\3^x=-3\\\text{not possible}$

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2 years ago

¿Cómo clasificarías este triángulo? ¡Recuerda que necesita dos nombres!

joja [24]

Answer:

how would you classify this triangle? remember you need two names.

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2 years ago

A company manufactures and sells personalized stationery. The weekly fixed cost is $3850 and it cost $3.00 to produce each packa

Sveta_85 [38]

Answer:

more than 1100

Step-by-step explanation:

The contribution margin for each package sold is ...

$6.50 -3.00 = $3.50

The number of packages that must be sold to cover fixed costs is ...

3.50n > 3850

n > 1100 . . . . . . . divide by 3.50

The company will generate a profit if more than 1100 packages are produced and sold each week.

_____

Additional comment

If exactly 1100 packages are sold, then costs are covered, but profit is 0. In order for profit to be positive, more than 1100 packages must be sold.

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2 years ago

Please guys help me I need help to get an A+

Sergeeva-Olga [200]

The “math sentence”: To find the answer, I need to divide the six chocolate bars by 3/4.

To model the situation, you need to draw 6 squares divided into quarters. Color in 3 of the quarters in each square.

Finally, write this for the solution sentence:
By giving 3/4 of a chocolate bar to each of her friends, Mrs. Lopes will be able to share her 6 chocolate bars with 8 different friends.

Hope you get that A+!

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3 years ago

In a certain year, 31% of adults in a certain country viewed college education as essential for success. For the following ten-y

maw [93]

Answer:

y = 31 + 2.6x

Step-by-step explanation:

Initial percentage = 31%
Average increase of percentage = 2.6% per year

This can be represented as:

y = 31 + 2.6x,

y- percentage after x years, x - number of years after the first year

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2 years ago