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dmitriy555 [2]
3 years ago
6

A pair of equations is shown below:

Mathematics
2 answers:
sasho [114]3 years ago
8 0
Solved this on a napkin but whatever lol

kati45 [8]3 years ago
4 0
This kinda took a lot of effort but hope it helps

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A track-and-field athlete releases a javelin. The height of the javelin as a function of time is shown on the graph below. Use t
Georgia [21]
Part 1:
 
 For this case we must see in the graph the axis of symmetry of the given parabola.
 We have then that the axis of symmetry is the vertical line t = 2.
 Answer:
 
The height of the javelin above the ground is symmetric about the line t = 2 seconds:

 
Part 2:

 
For this case, we must see the time t for which the javelin reaches a height of 20 feet for the first time.
 We then have that when evaluating t = 1, the function is h (1) = 20. To do this, just look at the graph.
 Then, we must observe the moment when it returns to be 20 feet above the ground.
 For this, observing the graph we see that:
 h (3) = 20 feet
 Therefore, a height of 20 feet is again reached in 3 seconds.
 Answer:
 
The javelin is 20 feet above the ground for the first time at t = 1 second and again at t = 3 seconds
5 0
3 years ago
4 + 8x = -12 <br> what is X?
Elena L [17]

Answer:

x=-2

Step-by-step explanation:

4+8x=-12

-4       -4

8x = -16

/8      /8

x   =   -2

5 0
3 years ago
Read 2 more answers
Please help this is the easiest question ever.
Elodia [21]
The answer to this question is 22
8 0
3 years ago
Read 2 more answers
Consider the given matrix. 1 −1 0 5 1 4 0 1 1 Find the eigenvalues. (Enter your answers as a comma-separated list.) λ = Find the
fomenos

Answer:

Step-by-step explanation:

We have to diagonalize the matrix

\left[\begin{array}{ccc}1&-1&0\\5&1&4\\0&1&1\end{array}\right]

we have to solve the expression

|A-\lambda I|=0

Thus, by applying the determinant we obtain the polynomial

(1-\lambda )^3+5-4=0\\(1-\lambda )^3+1=0\\

-\lambda^3+3\lambda^2-4\lambda+2

\lambda_1=1\\\lambda_2=1-i\\\lambda_3=1+i\\

and the eigenvector will be

v_1=(-4,0,5)\\v_2=(-1,-i,-1)\\v_3=(-1,i,1)

HOPE THIS HELPS!!

3 0
3 years ago
Kadence took a random sample of students at her school and asked them how much they typically slept on a school night versus a w
pochemuha

Answer:

The answer is "3.329".

Step-by-step explanation:

Please find the complete question in the attached file.

\text{test statistic t} = \frac{slope}{standard \ error}

                      =\frac{0.789}{0.237}\\\\=3.329

3 0
3 years ago
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