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Klio2033 [76]
3 years ago
5

Find the vertex of this quadratic

Mathematics
1 answer:
mihalych1998 [28]3 years ago
4 0

Answer:

The vertex of the quadratic equation is the point (4,2)

Step-by-step explanation:

we know that

The figure show a vertical parabola open downward

The vertex represent the maximum point of the graph

Looking at the graph

The maximum point of the graph is (4,2)

therefore

The vertex of the quadratic equation is the point (4,2)

see the attached figure to better understand the problem

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Answer:

cosine = adjacent/hypotenuse

cos A = 20/29   (choice: yellow)

Step-by-step explanation:

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3 years ago
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Find the geometric mean of the pair of numbers.
Nikolay [14]
Thank you for posting your question here at brainly. Feel free to ask more questions.  

The best and most correct answer among the choices provided by the question is <span>A. 44</span>.<span>       
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4 0
3 years ago
Two computers just scanned for viruses at the same time. Computer A runs a virus scan every 2.75 days. Computer B runs a virus s
Elis [28]

Let the time taken by computer for virus scan be, 'x' days

We are given that Computer A runs a virus scan in every 2.75 days and Computer B runs a virus scan in every 3.5 days.

<h3>Amount of work done by computer A⤵️</h3>

Amount of work done in one day = \tt\frac{1}{2.75}

Amount of work done in x days = \tt\frac{x}{2.75}

<h3>Amount of work done by Computer B⤵️</h3>

Amount of work done in one day = \tt\frac{1}{3.5}

Amount of work done in x days = \tt\frac{x}{3.5}

Since, They are doing the same work the amount of work done is 1.

\sf \:  \frac{x}{2.75}  +  \frac{x}{3.5}  = 1

Solve for x ~

\sf \frac{x}{ \frac{11}{4} }  +  \frac{x}{ \frac{7}{2} }  = 1

\sf \frac{4x}{11}  +  \frac{2x}{7}  = 1

\sf \: 28x + 22x = 77

\sf \: 50x = 77

\sf \: x =  \frac{77}{50}

\boxed{ \bf \: x = 1.54}

➪ <em>Thus, the time taken when both computers run a virus scan at the same time again is, 1.54 days</em>

8 0
2 years ago
Please help i had a ruff night need help
Gnesinka [82]
-14 < v - 11 ≤ - 7

Add 11 to both sides:
-3  < v  ≤ 4

  o---------------------------------------------------<span>■</span> 
  |-------|-------|-------|-------|-------|-------|-------|
-3      -2      -1       0      1        2       3       4


8 0
3 years ago
(x2 + 3x + 1) + (2x2 + 2x)<br> HINT
viva [34]

Answer:

3x^2+5x+1

Step-by-step explanation:

(x^2 + 3x + 1) + (2x^2 + 2x)

Combine like terms

x^2 + 2x^2  + 3x +2x   +1

3x^2+5x+1

4 0
3 years ago
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