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lina2011 [118]
2 years ago
9

id="TexFormula1" title="5xy { - x} ^{2} {t} + 2xy + 3x {}^{2} t" alt="5xy { - x} ^{2} {t} + 2xy + 3x {}^{2} t" align="absmiddle" class="latex-formula">
what's the answer

​
Mathematics
1 answer:
fenix001 [56]2 years ago
6 0

Answer: 7xy + 2x^2t

Step-by-step explanation:

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What is the average rate of change of f(x) over the interval from x=5 to x=9<br><br> is it -4 or 4?
ICE Princess25 [194]
In order to get the average rate you should do the y2-y1/x2-x1 formula. lets see our points are (5,-2)(9,14).. so our formula should be filled like 14+2/9-5, now subtract or add to get 16/4 now divide to get positive 4.. 

Hope this helps
7 0
3 years ago
8. Which of the following is not a true statement?
Tresset [83]

Answer:

Answe is D

Step-by-step explanation:

The zero doesn't mean any sense when it comes to decimal..

4 0
3 years ago
Read 2 more answers
If anyone can answer this, I will give you hearts!
kotegsom [21]

Answer:

  see attached

Step-by-step explanation:

Rotation 270° counterclockwise is equivalent to rotation 90° clockwise. The transformation of coordinates is ...

  (x, y) ⇒ (y, -x) . . . . . . . rotation 270° CCW

This means the points are moved to ...

  A(-2, 1) ⇒ A'(1, 2)

  B( 1, 2) ⇒ B'(2, -1)

  C(-2, 4) ⇒ C'(4, 2)

The rotated triangle is shown in the attachment. You may notice that A' and B are the same point.

6 0
2 years ago
Which ordered pair is the best estimate of the solution of the system 3x+y=4 x-3y=4?
vovangra [49]
3x+y=4\ \ \ \ \ \ ..............equation(1)\\x-3y=4\ \ \ \ \ \ ..............equation(2)\\\\ Using~equation~(2), \\\\&#10;x-3y=4\\x=4+3y\\\\Now,\ using\ the\ value\ of\ x\ in\ equation\ (1),\ we\ get,\\\\(4+3y)-3y=4\\\\4=4

Since all the variables cancel out and the coefficient equal to eachother, this system of equation has <u>infinitely many solutions!</u>
6 0
3 years ago
A man is standing at a radar base and observes an unidentified plane at an altitude 6000m flying towards the radar base at an an
liubo4ka [24]

Answer:

The speed in of the plane is 115.47 m/sec

Step-by-step explanation:

Given:

Height at which the plane is flying = 6000 m

Angle of elevation at the radar base = 30 Degrees

Angle of elevation at the radar base after one minute  = 60 Degrees

To Find:

The Speed of the plane in meter per second = ?

Solution:

Let us use the tangent of the angle to find the distance (d) to a point directly below plane:

<u>when the angle is 30 degrees</u>

tan(30) = \frac{6000}{d1}

d1   = \frac{6000}{tan(30)}

d1 = \frac{6000}{0.577}

d1 = 10392.3 meters

<u>when the angle is 60 degrees</u>

tan(60) = \frac{6000}{d2}

d2  = \frac{6000}{tan(60)}

d2  = \frac{6000}{1.732}\\

d2 = 3464.1 meters

<u>distance travelled by aircraft in 1 min is  </u>

=>d1 - d2

=>0392.3 - 3464.1

= 6928.2 m/min

<u>Now converting to m/sec</u>

=>\frac{6928.2}{60}

=>115.47 m/sec

4 0
3 years ago
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