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Zanzabum
3 years ago
5

Determine the points of intersection of the given functions. y = –x2 + 3x + 20 y = –2x + 15 Describe the features of the graphin

g calculator you would choose and why.
Mathematics
2 answers:
Tanzania [10]3 years ago
5 0

After you type in your equations and hit graph you notice that, if you are in the standard window, your parabola is cut off so you have to choose your "window" button to change the viewing window to see the whole graph. Then you would use your 2nd button and "trace" and "intersect" to find the points of intersection of the 2 graphs. The first point is at (-.90901, 16.81812) and the second point is at (5.9090909, 3.1818182). Graphing calculators are quite amazing!

NISA [10]3 years ago
3 0

After you type in your equations and hit graph you notice that, if you are in the standard window, your parabola is cut off so you have to choose your "window" button to change the viewing window to see the whole graph. Then you would use your 2nd button and "trace" and "intersect" to find the points of intersection of the 2 graphs. The first point is at (-.90901, 16.81812) and the second point is at (5.9090909, 3.1818182). Graphing calculators are quite amazing!

Read more on Brainly.com - brainly.com/question/10786940#readmore

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A researcher computes the definitional formula for SS, and finds that Σ(x − M) = 44. If this is a sample of 12 scores, then what
olga_2 [115]

Answer:

Option B.

Step-by-step explanation:

Given information:

Σ(x − M) = 44

where, M is mean.

Sample size = 12

The computational formula for sample variance is

s^2=\dfrac{\sum (x-M)^2}{N-1}

where, M is sample mean and N is sample size.

Substitute Σ(x − M) = 44 and N=12 in the above formula.

s^2=\dfrac{44}{12-1}

s^2=\dfrac{44}{11}

s^2=4.0

The sample variance is 4.0.

Therefore, the correct option is B.

5 0
3 years ago
F(x)=5x-1<br> Domain {-1,0,1,2}<br> Find the range:
Katena32 [7]

Answer:

Step-by-step explanation:

Putting the values in F(x)=5x-1

= -6,-1,5,9

Range =highest -lowest =9--6

=15

3 0
3 years ago
Let f(x)=8/(1+3e)^(-0.7x)
Troyanec [42]
For x = -3, <span>(-0.7x) equals (-0.7[-3]), or 2.1.
 
                                8                   8                       8
Then f(-3) =  ------------------- = ---------------- = ------------ = 0.31 (approx)
                        1 + 3*e^2.1      1 + 24.499        25.5</span>
5 0
3 years ago
3(у - 3) - 2(у 4) = 4​
Dennis_Churaev [7]

Answer:

y = 5

Step-by-step explanation:

3(у - 3) - 2(у -4) = 4​

Distribute

3y -9 -2y +8 =4

Combine like terms

y -1 =4

Add 1 to each side

y-1+1 = 4+1

y = 5

3 0
3 years ago
Read 2 more answers
Help need done fast pls.
Arada [10]
The total degrees of a triangle is 180.
So
37+63=100
And well
180-100=80
U=80
5 0
2 years ago
Read 2 more answers
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