There are 206 people find the percentage of 80 people

Answers

Answer 1
Answer: 80 people out of 206 people.

(80)/(206) = (40)/(103) \approx \boxed{\sf{39~percent}}

Your answer is 39%.

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Determine the value of k so that 2x^2+kx+5=0 has each type of solutions: 2 real solutions:
2complex,nonreal solutions:
Exactly 1 real solution:

Answers

2x^2+kx+5=0 \n \na=2 \n b=k \n c=5 \n \Delta=b^2-4ac=k^2-4 * 2 * 5=k^2-40

When the discriminant Δ is greater than 0, the equation has 2 real solutions:
k^2-40 > 0 \nk^2>40 \nk>√(40) \ \lor \ k<-√(40) \nk>2√(10) \ \lor \ k<-2√(10) \n\boxed{k \in (-\infty,-2√(10)) \cup (2√(10), +\infty)}

When the discriminant Δ is less than 0, the equation has 2 complex and no real solutions:
k^2-40<0 \nk^2<40 \nk<√(40) \ \land \ k>-√(40) \nk<2√(10) \ \land \ k>-2√(10) \n\boxed{k \in (-2√(10),2√(10))}

When the discriminant Δ is equal to 0, the equation has exactly 1 real solution:
k^2-40=0 \nk^2=40 \nk=√(40) \ \lor \ k=-√(40) \nk=2√(10) \ \lor \ k=-2√(10) \n\boxed{k \in \{ -2√(10), 2√(10) \} }

What is the answer to this please?
-3(x+2)+5x = -9

Answers

Answer:

-3(x+2)+5x=-9\n-3x-6+5x=-9\n-3x+5x=-9+6\n2x=-3\nx=-(3)/(2)

Which statements describe the graph of y = 4x2 + 28x + 49? Check all that apply. The graph has two x-intercepts because 4x2 + 28x + 49 has two different factors. The equation 2x + 7 = 0 can be used to find a zero of the function. The equation (2x – 7)2 = 0 can be used to find the y-intercept. The graph has a double root at x = StartFraction negative 7 Over 2 EndFraction. The graph intersects the y-axis at y = 49.

Answers

Answer:

b,d, and ,e

Step-by-step explanation:

on edge ;)

Answer:

The equation 2x+7=0 can be used to find a zero of the function. The graph intersects the y-axis at 49

Step-by-step explanation:

The other statements are not correct because since (2x+7)^2 gives the polynomial function y=4x^2 +28x + 49, there are "two" answers, but it is the sa,e answer of -7/2. The graph also does not have a double root at -7/2, that is the x-intercept

What is the opposite of 10/7

Answers

The answer is 7/10 because u are just flipping the fraction around
the word opposite can mean two thingsopposite sign then answer is - 10/7opposite function then the answer is 7/10one of these will answer your question

Andrew has six fewer coins than Casey. Bob has two more than twice as many coins as Andrew. Altogether, they have 504 coins. How many coins does Bob have?

Answers

Andrew: x - 6
      Bob: 2x - 12
  Casey: x

  (x - 6) + (2x - 12) + x = 504
(x + 2x + x) + (-6 - 12) = 504
                        4x - 18 = 504
                            + 18   + 18
                               4x = 522
                                4       4
                                 x = 130.5

Round 24,732 to the
nearest thousand.

Answers

Answer:

25,000

Step-by-step explanation:

7 is greater than 5 so we need to round UP