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Anna007 [38]
3 years ago
11

−3x−9y=18 4x+3y=12 ​ x= y=

Mathematics
2 answers:
TEA [102]3 years ago
6 0

Answer: x=6 , y=-4

So i just did it on the paper. Ask if you need further help

Ann [662]3 years ago
4 0

Answer:

x=6

y=-4

hope its helpful

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**EZ 35 POINTS**
VLD [36.1K]
Kent can paint the room 1/5
luannda can paint the room 1/3
(3+5) (5*3) = 8/15 or 0.53 th of the room together but just for kent would be 1/5
6 0
3 years ago
Is -x+4y=-2 a direct variation?
In-s [12.5K]

Answer:

No

Step-by-step explanation:

Direct variation: two variables, one variable is a constant multiple of another variable

y = k x  .... k constant

-x+4y=-2

4y = x - 2

y = 1/4 x -1/2  ..... y = k x + b    y is not a simple multiple of x

6 0
3 years ago
Determine the greatest intergral value of K for which 2x^2 - Kx +2 =0 will have non-real roots ...Use quadratic inequalities to
Mrac [35]

Answer:

Greatest integral value of K = 3.

Step-by-step explanation:

The nature of the roots of a quadratic equation is determined by the sign of the discriminant, b^2 - 4ac.  For non-real roots this is negative.

2x^2 - kx + 9 = 0

The discriminant = (-k)^2 - 4*2*2 , so:

k^2 - 16 < 0  for non-real roots.

k^2 < 16

k <  √16

k  < 4

So the answer is 3.

The greatest integral value is 8.

6 0
3 years ago
What is 576 divided by 47
viktelen [127]

The answer to your question,

If rounded it would be 12.3, if not 12.5 with a repeated.

-Mabel

4 0
3 years ago
What is 513 + _ + 130 = 764? what is the missing number and can u pls do a explantation
dmitriy555 [2]

Answer:

121

Step-by-step explanation:

The missing number is 121. I got this by doing 764-130-513=121. You would do this because you are trying to find the number that would allow 130 and 513 to add up to 764.

Another way to look at this problem is 513+130= 643

764-643=121

In conclusion, 513+121+130=764

4 0
3 years ago
Read 2 more answers
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