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kifflom [539]
3 years ago
11

Find the value of this expression x^2-1 /x+4

Mathematics
2 answers:
frosja888 [35]3 years ago
8 0

Answer:

-16

Step-by-step explanation:

marysya [2.9K]3 years ago
6 0
The answer is -16
Your welcome
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| What is the product?<br> (2x-1)(x +4)<br> O 2x2-4<br> O 2x2+4<br> O 2x2 +78-4<br> O 2x2–7x-4
zubka84 [21]
The last one is that correct answer.
2x^2 +7x -4
3 0
3 years ago
The score of golfers for a particular course follows a normal distribution that has a mean of 73 and a standard deviation of 3.
Artemon [7]

Answer:

P(X \geq 74) = 0.3707

Step-by-step explanation:

We are given that the score of golfers for a particular course follows a normal distribution that has a mean of 73 and a standard deviation of 3.

Let X = Score of golfers

So, X ~ N(\mu=73,\sigma^{2}=3^{2})

The z score probability distribution is given by;

           Z = \frac{X-\mu}{\sigma} ~ N(0,1)

where, \mu = population mean = 73

           \sigma = standard deviation = 3

So, the probability that the score of golfer is at least 74 is given by = P(X \geq 74)

 P(X \geq 74) = P( \frac{X-\mu}{\sigma} \geq \frac{74-73}{3} ) = P(Z \geq 0.33) = 1 - P(Z < 0.33)

                                               =  1 - 0.62930 = 0.3707                  

Therefore, the probability that the score of golfer is at least 74 is 0.3707 .

3 0
3 years ago
I don't understand this question at all please help if you do
lorasvet [3.4K]

Answer:

Answer is \frac{4}{3}

Step-by-step explanation:

To find the interval of x. Use our equations to equal each other.

-x^2+2x=y,y=0

-x^2+2x=0\\-x(x-2)=0\\-x=0 , (x-2)=0\\x=0 ,2

\int\limits^2_0 {-x^2+2x} \, dx

Integrate.

\frac{-x^3}{3}+x^2\\(\frac{-2^3}{3}+2^2)-[\frac{-0^3}{3}+0^2]\\-\frac{8}{3} +4-0\\-\frac{8}{3}+\frac{12}{3}  =4/3

Using Desmos I have Graphs of both of the equations you have provided. The problem asks us to find the shaded region between those curves/equations.

Proof Check your interval of x.

7 0
2 years ago
Math each equation to its graph. Use the drop down menu to describe the equations.
ser-zykov [4K]
1. D linear
2. A quadratic
3. B exponential
4. C rational
6 0
3 years ago
Help please!!!!<br> Solve the system by graphing
kotegsom [21]

Answer:

picture of graph is attached. lmk if ur getting these right. its been a while since I've dont this

7 0
3 years ago
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