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cestrela7 [59]
3 years ago
14

NEED HELP?!?!! Solve the equation 1/3k-(k+1/3)=1/9(k+3) what’s the solution set?

Mathematics
2 answers:
ANTONII [103]3 years ago
4 0

k=-6/7 solved by cross multiplying.

mote1985 [20]3 years ago
4 0
Cross multiply this equation to get -6/7.
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Find the discriminant and the number of real roots for the equation.<br><br> 4x^2+12x+9=0
netineya [11]

Answer:

Step-by-step explanation:

5 0
3 years ago
Write the equation of a line that is perpendicular to y=-4/3x+9 and goes through (8,-5). Do not use spaces in your answer. Enter
liq [111]

Answer:

y=3/4x-11

Step-by-step explanation:

When a line is perpendicular to another line, their slope is the opposite reciprocal of that. So in this case, the slope of the perpendicular line would be positive 3/4. Next, plug in the points (8,-5) in the y=mx+b formula along with the new slope. In conclusion, the new point slope formula is y=3/4x-11.

Hope this helps! :)

8 0
3 years ago
I need these three solved. I have a lot of math to do. the directions say solve each system of equations using substitution. sho
alekssr [168]

Answer:

5.

x + 2(x + 1) = 8 --> x = 2

y = 2 + 1 = 3

7.

3(9 + 2y) + 5y = 20 --> y = -7/11

x = 9 + 2(-7/11) = 85/11

9.

3(-1 - 2y) + 5y = -1 --> y = -2

x = -1 - 2(-2) = 3


6 0
3 years ago
Solve the proportion 5/x=4/8 is
Anuta_ua [19.1K]
D. 10 is your answer.
In order to solve a proportion, you cross multiply.
In this case it will be 40=4x
Solve for x is 10. Therefore D is your answer.
Please give 5 star if it helped you. :)
7 0
3 years ago
Could somebody help me im slow sorry
Mars2501 [29]

Answer:

I'd say multiply the numerators then the denominators and at the end simplify at least thats how I multiply fractions :)

8 0
3 years ago
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