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Lostsunrise [7]
3 years ago
10

What is (x - 8)(x + 4) + (x - 3)(x + 9)?

Mathematics
1 answer:
JulijaS [17]3 years ago
7 0

Answer:

the answer is b

Step-by-step exp.anation:

You might be interested in
-12x-14=-62<br> -12x = ?
KIM [24]

Answer: No solution

Step-by-step explanation: -12x-14=-62-12x

You would have to simplify the -12x but you can't so this would be a no solution.

5 0
3 years ago
Read 2 more answers
3. Tmobile charges 100 dollars for the initial phone line and then 20 dollars for every phone line afterwards.
salantis [7]
A)your equation for t-mobile would be
y=20x+100

Topar equation
y=30x

B) you’d set the two equation equal to each other

20x+100=30x

giving you the answer x=10

C) when x>13

D) when x<14

i’m a bit iffy on the last two but that’s the conclusion i came to

5 0
3 years ago
Which scenario can be represented using the inequalities below? 1.25 &lt; x &lt; 1.5
Fiesta28 [93]

Answer:

The answer is D

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
In the graph of An inequality, the area above a solid line through the point (-5,2) and (3,2) is shaded. Which inequality does t
allochka39001 [22]

The inequality shown by this graph is  y ≥ 2.

<h3>Describe inequality.</h3>

the relationship between two non-equal expressions using a symbol like "not equal to," ≠ "greater than >," or "less than <  "

The inequality sign : ≥ or ≤ to use is: or because the line is solid and not dotted.

Given that the points have y-coordinate values of 2, (-5, 2), and (3, 2), respectively, and that the line crosses the y-axis at this point, the proper inequality is:

y ≥ 2

Therefore, y ≥  2 is the inequality.

To learn more about inequality from the given link:

brainly.com/question/18698351

#SPJ10

8 0
1 year ago
An economist is interested in studying the spending habits of consumers in a particular region. The population standard deviatio
Lena [83]

Answer:

The  width is  w = \$ 729.7

Step-by-step explanation:

From the question we are told that

   The population standard deviation is  \sigma =  \% 1,000

    The  sample size is  n  = 50

    The sample mean  is  \= x  =  \$ 15,000

Given that the confidence level is  99% then the level of significance is mathematically represented as  

               \alpha  =  100 - 99

=>            \alpha  =  1\%

=>             \alpha  = 0.01

Next we obtain the critical value of  \frac{\alpha }{2} from the normal distribution table, the value is

             Z_{\frac{\alpha }{2} } = Z_{\frac{0.01 }{2} } =  2.58

Generally margin of error is mathematically represented as

             E =  Z_{\frac{\alpha }{2} *  \frac{\sigma }{\sqrt{n} }

substituting values

              E = 2.58 *  \frac{1000 }{\sqrt{50} }

              E = 2.58 *  \frac{1000 }{\sqrt{50} }

               E = 364.9

The width of the 99% confidence interval is mathematically evaluated as

         w = 2 * E

substituting values

          w = 2 * 364.9

          w = \$ 729.7

5 0
3 years ago
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