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Zigmanuir [339]
3 years ago
9

Hurricane katrina? more like hurricane-

Mathematics
2 answers:
Gnom [1K]3 years ago
8 0
The answer to this question is c
nignag [31]3 years ago
5 0

Answer:

C

Step-by-step explanation:

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Help please, I attached the question. Is it a!? <br> 
AVprozaik [17]

Answer:

A

Step-by-step explanation:

Recall that for a quadratic equation of the form:

0=ax^2+bx+c

The number of solutions it has can be determined using its discriminant:  

\Delta = b^2-4ac

Where:

  • If the discriminant is positive, we have two real solutions.
  • If the discriminant is negative, we have no real solutions.
  • And if the discriminant is zero, we have exactly one solution.

We have the equation:

2x^2+5x-k=0

Thus, <em>a</em> = 2, <em>b</em> = 5, and <em>c</em> = -<em>k</em>.

In order for the equation to have exactly one distinct solution, the discriminant must equal zero. Hence:

b^2-4ac=0

Substitute:

(5)^2-4(2)(-k)=0

Solve for <em>k</em>. Simplify:

25+8k=0

Solve:

\displaystyle k = -\frac{25}{8}

Thus, our answer is indeed A.

3 0
2 years ago
Read 2 more answers
Oakville is a fungal disease that infects oak trees scientists have discovered that a single tree in a small forest is infected
Galina-37 [17]

Answer:

I solved part a

To solve this question, we need to solve an exponential equation, which we do applying the natural logarithm to both sides of the equation, getting that it will take 7.6 years for for 21 of the trees to become infected.

PART C

The logarithmic model is: g(x)= in x/0.4

We are given an exponential function, for the amount of infected trees f(x) after x years.To find the amount years needed for the number of infected trees to reach x, we find the inverse function, applying the natural logarithm.

Step-by-step explanation:

mark me brainliest!!

4 0
2 years ago
Does the graph show a proportional relationship between time and the total charge? Explain.
frosja888 [35]
It does, as there is a linear increase with a slope.
4 0
3 years ago
Which of the following graphs depicts the graph of the given system of equations
vaieri [72.5K]

Answer: it is the x multiplied by the y axis


Step-by-step explanation:


8 0
3 years ago
Show the work of 6.2 +3.4
Musya8 [376]

Answer:

9.6

Step-by-step explanation:

When we are adding decimals we try 2 add them like normal integers, but in the end we add the decimal in the same place as it was in the beginning

so 62+34=96 and there's a decimal in the tenths place so its 9.6

8 0
3 years ago
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