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VLD [36.1K]
3 years ago
15

Need an answer for question 7 HURRY PLEASE 20 POINTS

Mathematics
1 answer:
Andrei [34K]3 years ago
7 0

Answer:

2x^2 = 6x - 5.

-x^2 - 10x = 34.

These have only complex roots/

Step-by-step explanation:

3x^2 - 5x = -8

3x^2 - 5x + 8 = 0

There are complex roots if the discriminant  9b^2 - 4ac) is negative.

Here the discriminant D = (-5)^2 - 4*-5*8 = 25 + 160

This is positive so the roots are real.

2x^2 = 6x - 5

2x^2 - 6x + 5 = 0

D = (-6)^2 - 4*2*5 =  36 - 40 = -4

So this has no real roots only complex ones.

12x = 9x^2 + 4

9x^2 - 12x + 4 = 0

D = (-12)^2 - 4*9 * 4 = 144 - 144 = 0.

- Real roots.

-x^2 - 10x = 34

x^2 + 10x + 34 = 0

D = (10)^2 - 4*1*34 = 100 - 136 = -36.

No real roots = only complex roots.

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Raul has been offered three different jobs and must choose which one to accept. One of the factors he is considering is the pay
chubhunter [2.5K]

Answer:

As the pay rate for Job C is the highest, so he must accept the offer from Job C.

Step-by-step explanation:

Given that Raul would work 50 weeks of the year,

40 hours each week,

5 days each week,

and he would receive a 1-hour lunch break each day.

Pay rate for Job A = $35,000 / year

  • For Job B:

Pay rate = $15 / hour

He will work 40 hours each week.

As he works 5 days a week, so in 1 day he will work 40/5 = 8 hours.

He would receive a 1-hour break each day, for which he will not be paid, so he will receive a payment for 8-1=7 hours.

So, payment for 1 day = $15 x 7 = $105

As he works 5 days a week, so payment for 1 week = $105 x 5 = $525

As he works 50 weeks a year, so payment for 1 year = $525 x 50 = $26250.

So, the pay rate by Job B = $26250 /year

  • For Job C:

Pay rate = $750 / week

As he works 50 weeks a year, so payment for 1 year = $750 x 50 = $37500.

So, the pay rate by Job C = $37500 /year

As the pay rate for Job C is the highest, so he must accept the offer from Job C.

8 0
3 years ago
Stephen uses
34kurt

Answer:

13.75 servings or 13 ¾ servings

Step-by-step explanation:

This is the correct question

Stephen uses 2/25 kilograms of tofu in each serving of his famous tofu dish. He has 1 1/10 kilograms of tofu.

To get answer  

We will have to divide the number of tofu required with the number of tofu own.  

Stephen uses 2/25 kilograms of tofu in each serving and he has 11/10 kilograms tofu.  

= (11/10) ÷ (2/25)  

= (11/10) ÷ (2/25)

   11/10 * 25/2 =

   275 ÷ 20= 13.75 servings or 13 ¾ servings

Stephen can make 13 ¾ or 13.75 servings

3 0
3 years ago
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aksik [14]
4x+3(2x-1) -4x     3(2x-1)= 6x-3 -4x     4x+6x-4x=    6x-3
3 0
3 years ago
What is the answer to this question?
timurjin [86]

Answer: Option 1

Step-by-step explanation:

See attached image

3 0
2 years ago
Write an equation <br><br> 1) y=3<br> 2) y=3/4+3<br> 3) y=3/4x+3<br> 4) y=4
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Answer:

It B

Step-by-step explanation:

This is because the y-intercept is 3 and it going down

Hope this Helped

8 0
3 years ago
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