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OverLord2011 [107]
3 years ago
13

Please answer this !!!

Mathematics
1 answer:
denis-greek [22]3 years ago
8 0

Answer:

to do this we have to divide 43 by 83

0.51807228915

so the frequency is about 51.8%

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How many real solutions does this system of equations have? x^2 + y^2 = 36
Vinvika [58]

Answer:

C:  there are two real solutions

Step-by-step explanation:

x^2 + y^2 = 36 is the equation of a circle centered at the origin and with radius √36, or 6.  Even a rough sketch of this circle would enable you to visualize what is happening here.  

3x – y + 1 = 0 may be solved for y:  y = 3x + 1.  The y-intercept of this straight line is (0, 1).  Plot this point inside the circle of radius 6 mentioned above and then draw a straight line with slope m = 3 through it.  This line will intersect the circle in two places; they represent real solutions.

Alternatively, substitute 3x + 1 for y in x^2 + y^2 = 36:

x^2 + (3x + 1)^2 = 36, or

x^2 + 9x^2 + 6x + 1 = 36, or

10 x^2 + 6x + 1 - 36 = 0, or

10 x^2 + 6x - 35 = 0.  This is a quadratic equation.  We'll use the quadratic formula to find solutions which represent the intersections of this line with this circle:

The coefficients are a = 10, b = 6 and c = -35.  Thus, the discriminant is

b^2 - 4ac, or 6^2 - 4(10)(-35), or 1436.  

Because the discriminant is positive, we can safely conclude that there are two real solutions, that is, two different, real x-values, each representing the x-coordinate of a point of intersection of the circle and the line.

The correct answer to this prolem is C:  there are two real solutions.

4 0
3 years ago
Sally picked 815 flowers she wanted to put each flower in 4 pots how many more flowers does she pick so she won't gave any extra
bezimeni [28]

Answer:1 more flower

Step-by-step explanation:becuz if she had 815 flowers to divide equally among 4 pots it would not be equal one pot will only ,203 flowers when others have 204 flowers so she will need to pick one more flower so each pot can have an equal amount of flowers.

4 0
2 years ago
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Over [174]
N(-5/8)=-0.4
times both sides by -8/5
n(-40/-40)=3.2/5
n1=0.64
n=0.64
8 0
2 years ago
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I need some help... Algebra Hw
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Answer:

Step-by-step explanation:

2.A

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2 + 2 = ?<br> This is for easy points!
Setler79 [48]
4 is the answert :))
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