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rewona [7]
3 years ago
14

Help me solve this. Thank youx

Mathematics
1 answer:
liubo4ka [24]3 years ago
7 0

I guess it's b

{x}^{2}  + 8x + 16 \\  \\ 1. \:  {x}^{2}  + 2(x)(4) +  {4}^{2}  \\ 2. \: (x + 4)^{2}

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il63 [147K]

The answer is C an example is 20% of $20 is 4, so you would lose the zero and double the 2 to get 4

8 0
3 years ago
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When does a compound inequality with OR have a solution that is the entire number line? Can the solution be bounded to one side?
dalvyx [7]

Answer:

Concept: Algebraic Analysis

  1. \geqslant   \:  \:  \:  \:  \:  \:  \:  \:  \:  \: \leqslant
  2. Those two symbols indicate one solution
  3. <  \:  \:  \:  \:  \:  \:  \:  >
  4. Those symbols indicate a range of values
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6 0
3 years ago
Please help. Look at screenshot
Citrus2011 [14]

Answer:

a.

<u>Increasing:</u>

x < 0

x > 2

<u>Decreasing:</u>

0 < x < 2

b.

-1 < x < 2

x > 2

c.

x < -1

Step-by-step explanation:

a.

Function is increasing when it is going up as we go rightward

Function is decreasing when it is going down as we go rightward

We can see that as we move up (from negative infinity) until x = 0, the function is increasing. Also, as we go right from x = 2 towards positive infinity, the function is going up (increasing).

So,

<u>Increasing:</u>

x < 0

x > 2

The function is going down, or decreasing, at the in-between points of increasing, that is from 0 to 2, so that would be:

<u>Decreasing:</u>

0 < x < 2

b.

When we want where the function is greater than 0, we basically want the intervals at which the function is ABOVE the x-axis [ f(x) > 0 ].

Looking at the graph, it is

from -1 to 2 (x axis)

and 2 to positive infinity

We can write:

-1 < x < 2

x > 2

c.

Now we want when the function is less than 0, that is basically saying when the function is BELOW the x-axis.

This will be the other intervals than the ones we mentioned above in part (b).

Looking at the graph, we see that the graph is below the x-axis when it is less than -1, so we can write:

x < -1

4 0
3 years ago
Morgan, Dakota and Taylor showed their work solving the equation 7x+5x+1=73. Identify the student with the invalid first step an
antoniya [11.8K]

Answer:

Step-by-step explanation:

Given the equation solved by Morgan, Dakota and Taylor expressed as 7x+5x+1=73, to get the value of x, the valid steps are as shown;

7x+5x+1=73

take the sum of 7x and 5x

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subtract 1 from both sides

12x+1-1 = 73-1

12x = 72

Divide both sides by 12

12x/12 = 72/12

x = 6

Based on the calculation above, the students with invalid first step is Dakota.

<em>Dakota added 5x with 1 to get 6x which is an invalid step because 1 is not attached to a variable x. A function cannot be added to a constant hence making his first step invalid.</em>

8 0
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Which of the following is 38/6 converted to a mixed number
Monica [59]
6 goes into 38 6 times (6 * 6 = 36). We can bring out a whole number of 6 into our mixed number. Now, we have 2/6 left over. That can be reduced to 1/3. Your mixed number is 6\frac{1}{3}
7 0
3 years ago
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