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elixir [45]
2 years ago
9

Evaluate the discriminant for x2-5x+4=0

Mathematics
1 answer:
FromTheMoon [43]2 years ago
8 0
9 is your answer, hope this helps

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The inequality below represents h, the number of hours Ellie need to work this week to earn at least $360 by the end of the mont
Gnom [1K]

Answer:

The answer to your question is 10 hours.

Step-by-step explanation:

Inequality                            12h + 240 > 360

Solve the inequality as if it was an equation

                                           12h > 360 - 240

                                           12h > 120

                                           h > 120 / 12

                                           h = 10 hours

Let's evaluate some number of hours

If h = 3                        12(3) + 240 > 360

                                  36 + 240 > 360

                                          276 > 360     Incorrect, she needs to work more

                                                                 than 3 hours

If h = 5                         12(5) + 240 > 360

                                   60 + 240 > 360

                                           300 > 360     Incorrect, she needs to work more

                                                                 than 5 hours

If h = 7                          12(7) + 240 > 360  

                                    84 + 240 > 360

                                          324 > 360      Incorrect she needs to work more

                                                                 than 7 hours

If h = 11                          12(11) + 240 > 360  

                                     132 + 240 > 360

                                              372 > 360   Correct, she needs to work at least

                                                                   10 hours.                                              

7 0
3 years ago
Sixty-five percent of men consider themselves knowledgeable soccer fans. If 10 men are randomly​ selected, find the probability
alexira [117]

Answer:

.252

Step-by-step explanation:

{10\choose7}*.65^7*(1-.65)^3=.252219625

3 0
2 years ago
Which numbers are solutions of the inequality?<br><br> x &gt; –5; –7, –5, –1
yanalaym [24]

Answer:

-1 is the only answer that is greater than -5

3 0
3 years ago
Give the explicit and recursive formula for the sequence 0,6,12,18,24
Zigmanuir [339]
<span>Your input 6,12,18,24,30,36,42,48 appears to be an arithmetic sequence</span>
3 0
2 years ago
Ten students obtained the following marks on a quiz: 5,5,5,5,7,7,8,9,10,
Travka [436]
The first one is b. The second one is d. Sorry if I’m wrong :(
5 0
3 years ago
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