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Anit [1.1K]
3 years ago
6

Hi. I need help with these questions. See image for question. Answer 15

Mathematics
2 answers:
UNO [17]3 years ago
8 0

Answer:

  • x = 1/5

Step-by-step explanation:

<h3>Given</h3>
  • Parabola y = 5x² -2x + 3
<h3>To find</h3>
  • The equation of the line of symmetry
<h3>Solution</h3>

The line of symmetry passes through the vertex of the parabola

<u>The vertex is determined by the formula: </u>

  • x = -b/2a
  • Where b and a are constants from the standard form of ax² + bx + c = 0

<u>Substituting values from the given equation:</u>

  • x = -(-2)/2(5) = 1/5
  • x = 1/5 is the line of symmetry
Sauron [17]3 years ago
4 0

Step-by-step explanation:

YOU JUST FOLLOW THE STEP

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At 20 meters from a flagpole, the angle of elevation is 48 degrees, how tall is the flagpole
Ira Lisetskai [31]

<u>ANSWER: </u>

The height of flag pole is 24 meters.

<u>SOLUTION: </u>

Given, at 20 meters from a flagpole, the angle of elevation is 48 degrees,  We need to find how tall is the flag pole.

Let the length of the flag pole be x.

In the given case, ground, flag pole and sight all together forms a right angle triangle.

In that triangle, sight acts as hypotenuse and remaining as sides.

Now, we know that, in any triangle.

\tan \theta=\frac{\text {opposite side}}{\text {adjacent side}}

Since, angle of elevation is 48 degrees and flag acts as opposite side, we get

\tan (48)=\frac{x}{20}

1.200=\frac{x}{20}

x = 1.200 x 20

x = 24.00

Hence, the height of flag pole is 24 meters.

3 0
3 years ago
Construct a truth table for p^(q^r)
kiruha [24]

Answer:

check.

Step-by-step explanation:

I did the table in the picture below. To understand it you only need to know that the ^ only is true when both propositions (left and right) are true.

8 0
3 years ago
For all real numbers a and b, 2a•b=a^2 + b^2
fiasKO [112]
That's not true at all.

If  a=2  and  b=3 . . .  then

             2 · a · b = 12
but
            a²  +  b²  =  13 .

This doesn't satisfy your statement, because 12 and 13 are not equal.

Right off hand, it looks to me as if your statement is true
ONLY if 
                   |a|  =  |b|                 ('a' = plus or minus 'b') 

and NOT for any other pairs of numbers.
7 0
3 years ago
Read 2 more answers
2. What are the coordinates of point C?
KiRa [710]

Answer:

(3, -5)

Step-by-step explanation:

Can I please have brainliest?

4 0
3 years ago
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Consider a water pipe that branches into two smaller pipes. If the flow of water is 10 L/min in the main pipe and 4 L/min in one
masha68 [24]

The water flows 6 liters per minute in the other branch of pipe.

Step-by-step explanation:

Given,

Flow of water in main pipe = 10L/min

Flow of water in one branch = 4L/min

Flow of water in other branch = x

Flow of water in main pipe = Flow in one branch + Flow in other branch

10=4+x\\10-4=x\\6=x\\x=6

The water flows 6 liters per minute in the other branch of pipe.

4 0
3 years ago
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