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vivado [14]
4 years ago
11

Can sometime tell me why the discriminate b^2-4ac doesn't identify trinomial 3x^2+4x-15 as something that's factorable with two

answers? I keep getting a negative number using the discriminate.
Mathematics
1 answer:
Romashka [77]4 years ago
6 0

Answer: Discriminant = 196

<u>Step-by-step explanation:</u>

y = 3x² + 4x - 15

   a=3    b=4   c=-15

Discriminant = b² - 4ac

                     =(4)² - 4(3)(-15)

                     = 16 - (-180)

                     = 16 + 180

                     = 196

If b² - 4ac > 0, then there are 2 real roots/solutions/x-intercepts

If b² - 4ac = 0, then there is 1 real root/solution/x-intercept

If b² - 4ac < 0, then there are 0 real roots/solutions/x-intercepts

                                                (2 imaginary roots/solutions)

Since 196 is positive, there are 2 real roots ....

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An actor, Bob, wants to gain weight to look the part for his role as an overweight truck driver in an upcoming movie. He decides
Anastaziya [24]

Answer:

C = 1000S + 500B

Step-by-step explanation:

Given

S = Banana\ Splits

B=Bacon\ Rolls

Reading through the question, we have:

Number of calories per serving:

S \to 1000

B \to 500

Let

x = Cholesterol

y =Sugar

So, we have:

Each serving of S

x \to 1S

y \to 3S

Each serving of B

x \to 4B

y \to 1B

Recommendation

x \to \le 10 - i.e. not more than 10 units of cholesterol

y \to \ge 2 \& \le 9 i.e. At least 2units but not more than 9 units of sugar

So, the constraints are:

S + 4B \le 10

3S + B \ge 2

3S + B \le 9

Recall that the calories per serving is:

S \to 1000

B \to 500

Hence, the objective function is:

C = 1000S + 500B

5 0
3 years ago
Is 60 miles to 80 miles equivalent to a ratio of 3:4?<br><br> Yes or no <br> ANSWERS ONLY NO LINKS
igomit [66]

Answer: No

Step-by-step explanation: No, because in order for it to be equivalent, it has to be 60:80 = 60 to 80.

3 0
3 years ago
At a football stadium, 4% of the fans in attendance were teenagers. If there were 120 teenagers at the football stadium, what wa
GuDViN [60]

Answer:

3000 people

Step-by-step explanation:

4% teenagers --> 120 teenagers were there

120/4 means 1% so 30 is 1%

1% times 100 is 100% so 30 times 100 equals 100% so 3000 is 100% of the people at the stadium

7 0
3 years ago
Read 2 more answers
1) Fred Flint is paid $11.95 an hour with time-and-a-half pay for all hours he works over 40
allsm [11]

Fred's overtime rate and pay is $17.925 and $98.5875 respectively

<h3>Total payment</h3>

  • Amount paid per hour = $11.95

  • Amount paid overtime per hour = $11.95 × 1.5

= $17.925

  • Total hours worked last week = 45 1/2 hours

  • Overwork time = 45 1/2 hours - 40 hours

= 5 1/2 hours

Fred's overtime pay = 5 1/2 hours × $17.925

= 11/2 × 17.925

= $98.5875

Normal work rate = 40 hours × $11.95

= $478

Fred's total pay = Fred's overtime pay + Normal work rate

= $98.5875 + $478

= $576.5875

Therefore, Fred's total pay is $576.5875

Learn more about total pay:

brainly.com/question/2021001

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5 0
2 years ago
Pls help I need a good grade I will brainlest
kobusy [5.1K]
The correct answer is 4/3
8 0
3 years ago
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