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zmey [24]
3 years ago
9

X/-9 ​≥ 3

Mathematics
2 answers:
____ [38]3 years ago
8 0

Answer:

x ≤ -27

Hope this helps,

Davinia.

Debora [2.8K]3 years ago
7 0

Answer:

x ≤ -27

Step-by-step explanation:

x/-9 ​≥ 3

well since theres division and we want to separate the x's and the naked numbers by themselves were going to have to multiply

x ≥ 3 x -9

x ≥ - 27  (but since theres a negative the symbol  ≥ is going to switch)

x ≤ -27

TIP: remember we always do the opposite when switching a numbers place for example if we have +9 if we switch it place to the other side its going to become -9, same thing with multiplication and division.

example:

3 + x = 5                          or           3x = 5

x = 5 - 3                                          x = 5/3

~batmans wife dun dun dun...aka ~serenitybella

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7x +8y = 25 ~~~....(i)\\\\9x +10y = 35~~~ ....(ii)\\\\\text{Multiply equation (ii) by}~ \dfrac 79 ~ \text{and do (ii) - (i):}\\\\\dfrac 79 (9x +10y) - (7x +8y) = \dfrac 79 (35) - 25\\\\\\\implies 7x +\dfrac{70y}9 - 7x -8y = \dfrac{245}9 -25\\\\\\\implies - \dfrac{2y}9 =  \dfrac{20}9\\\\\\\implies -2y =20\\\\\implies y =-10\\\\\text{Substitute}~ y = -10~ \text{in equation (i):}\\\\\\7x +8(-10) = 25\\\\\implies 7x  = 25 +80\\\\\implies 7x = 105 \\\\\implies x =15\\\\

\\\text{Hence}~ (x,y) = (15,-10)

3 0
2 years ago
Eitan is on a train heading west into the city while Dmitri is on a train on the adjacent track heading east, away from the city
siniylev [52]
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6 0
3 years ago
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A science class has 3 girls and 7 boys in the seventh grade and 4 girls and 4 boys in the eighth grade. The teacher randomly sel
Gala2k [10]

Answer:

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Step-by-step explanation:

3 0
3 years ago
What is the absolute value of 9.8 and
Citrus2011 [14]
The answer is -10/3 your answer
7 0
3 years ago
What is the value of x?<br> Enter your answer in the box.<br> x =
Svetllana [295]

Answer:

Step-by-step explanation:

The two triangles are similar and therefore we can set up a proportion

9/(9 + 72) = (3x - 20)/(3x - 20 + 56)       Combine like terms on the right

9/(81) = (3x - 20)/(3x + 36)                      Cross multiply

9(3x + 36) = 81 (3x - 20)                         Remove the brackets.

27x + 324 +1620 = 243x                        Add 1620 to both sides

27x + 324 + 1620 = 243x                       Subtract 27x from both

1944 = 216x                                            divide both sides by 216

x = 9                                  

If you feel comfortable canceling the size of the numbers can be reduced.

9/81 = 1/9

1/9 = (3x - 20)/(3x + 36)

3x + 36 = 9(3x - 20)

3x + 36 = 27x - 180

36 + 180 = 24x

216 = 24x

216/24 = x

x = 9

There is another cancelation possible, but this is simple enough.

6 0
3 years ago
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