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11111nata11111 [884]
3 years ago
13

What is the relationship between the “solution” to a quadratic equation and the graph of a quadratic equation? How many possible

real solutions might there be when you solve a quadratic equation and how do these possible solutions affect the position the parabola on a coordinate plane?
Mathematics
1 answer:
mel-nik [20]3 years ago
8 0
The solutions of a quadratic equations are the x value of the x-intercepts of the graph. 

If there are 0 real solutions, the parabola will not touch the x-axis.

If there is 1 real solution, the parabola's vertex will be on the x-axis.

If there are 2 real solutions, the parabola will intersect the x-axis in two distinct positions.

Hope this helps!
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Find the simple interest paid for 7 years on a $600 loan at 5% per year.
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Answer:

Step-by-step explanation:

200

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What is the range of the function graphed below?
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-infinity < y ≤ 2

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A is correct.  The largest value y can have is 2, whereas there is no smallest value.   -infinity < y ≤ 2

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What are the solution(s) to the quadratic equation 40 - x2 = 0?
Zanzabum

Answer:

  x=\pm2\sqrt{10}

Step-by-step explanation:

You want to solve ...

  40 -x^2=0\\\\40=x^2\qquad\text{add $x^2$}\\\\\pm\sqrt{40}=x\qquad\text{take the square root}\\\\\boxed{x=\pm2\sqrt{10}}\qquad\text{simplify}

5 0
2 years ago
Mandy is selling pancakes and waffles at her diner. On Monday she sold a total of 300 pancakes and waffles. If she charges $3 pe
elena-s [515]

Answer:

Mandy sold 250 pancakes and 50 waffles.

Step-by-step explanation:

From the information given, you can say that the sum of pancakes and waffles is equal to 300:

x+y=300

Also, the statement indicates that she charges $3 per pancake, $1 per waffle, and made a total of $800 and you can express this as:

3x+y=800

You have the following equations:

x+y=300 (1)

3x+y=800 (2), where:

x is the number of pancakes she sold

y is the number of waffles she sold

Now, you can solve for x in (1):

x=300-y (3)

Then, you can replace (3) in (2):

3(300-y)+y=800

900-3y+y=800

900-800=2y

100=2y

y=100/2

y=50

Finally, you can replace the value of y in (3) to find x:

x=300-50

x=250

According to this, the answer is that Mandy sold 250 pancakes and 50 waffles.

5 0
2 years ago
I have a question here. ​
taurus [48]

9514 1404 393

Answer:

  P(F|A) = 35%

Step-by-step explanation:

P(F|A) = P(F&A)/P(A) = 7%/20% = 0.35

P(F|A) = 35%

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The given numbers will let you fill in a table for all of the categories of workers. However, it turns out this question can be answered using only the numbers given in the problem statement.

6 0
2 years ago
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