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Elis [28]
2 years ago
12

System A:x=3y=-9 2x=y=4 system B: 3x+4y=-9 2x+y=4 how can we get system b from system A? Are the systems Equivalent? TEST NEED H

ELP!! ASAP
Mathematics
2 answers:
Alja [10]2 years ago
5 0
2x + 3y = 4. 4x + 6y = 9. First, solve the ... First, solve the second equation for x to get x = −2y − 1.
Nadusha1986 [10]2 years ago
3 0

Answer:

I need point

Step-by-step explanation:

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How do you find the height of a triangle (to calculate area)?
Lilit [14]

Answer:

The height of the triangle could be found by the <u>Pythagoras theorem</u>, where the result is, with the data of the exercise:

  • <u>Height of the triangle = 10.392</u>

And the area of the triangle is:

  • <u>Area of the triangle = 31.176 units^2</u>

Step-by-step explanation:

When you have two measurements of a triangle, as the case in the picture, you can find the third with the <em>Pythagoras theorem</em>, which is:

  • <u>(opposite leg)^2 + (adjacent leg)^2 = hypotenuse^2</u>

As you can see in the picture, the measurement of the hypotenuse is 12, and the opposite leg could be 6, for this reason, we're gonna clear the adjacent leg of the formula above:

  • (opposite leg)^2 + (adjacent leg)^2 = hypotenuse^2
  • (adjacent leg)^2 = hypotenuse^2 - (opposite leg)^2

Now, we can replace the values in the formula obtained:

  • (adjacent leg)^2 = hypotenuse^2 - (opposite leg)^2
  • (adjacent leg)^2 = 12^2 - 6^2
  • (adjacent leg)^2 = 144 - 36
  • (adjacent leg)^2 = 108

Now, as we just need the adjacent leg, we take the square root of both sides:

  • adjacent leg = \sqrt{108}
  • <u>adjacent leg = 10.392 approximately</u>.

Now, with these data, we can find the area of the triangle with the next formula:

  • Area of a triangle = (base * height) / 2
  • And we replace the measurements:
  • Area of a triangle = (6 * 10.392) / 2
  • <u>Area of a triangle = 31.176</u>

As the image does not contain units, it would be simply this number, however, <em>you should know that the area units are usually given squared, for example: in^2 or ft^2</em>.

4 0
2 years ago
If two lines are perpendicular to each other, do they lie in the same plane?
Arada [10]
Yes they do, Hope this helps :p
8 0
2 years ago
Find the volume of a cone if the slant height is 50 in and the diameter is 80 in
allsm [11]
<span>Find the volume of a cone if the slant height is 50 in and the diameter is 80 in
</span>
V≈52359.88<span>

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5 0
3 years ago
Which is the better buy $18 and 3 flash drivers or $35 and 5 flash drivers
Vedmedyk [2.9K]

Answer:

18$ fro 3

Step-by-step explanation:

18/3= 6

35/5=7

because 6 is less than 7 you should buy 3 flash drivers it's thebetter deal

5 0
3 years ago
Read 2 more answers
-4x - 3(2x + 8) = 36 solve for x
vampirchik [111]

Answer:

x = -6

Step-by-step explanation:

-4x - 3(2x + 8) = 36

-4x - 6x - 24 = 36

-10x = 60

-x = 6

x = -6

5 0
2 years ago
Read 2 more answers
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