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RideAnS [48]
3 years ago
7

3x(2-x)+2x(x-1)=5x(x+3)

Mathematics
2 answers:
Vika [28.1K]3 years ago
4 0
Solution: x=0
X=- 11/6
mylen [45]3 years ago
3 0

Step-by-step explanation:

6x - 3x^2 + 2x^2 -2x = 5x^2 + 15x

4x -x^2 = 5x^2 + 15x

-11x - 6x^2 = 0

-6x^2 - 11x = 0

use the quadratic formula

(-b±√(b²-4ac))/(2a)

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Solve for v: -10=-5/4v
vagabundo [1.1K]

Answer:

v = 8

Step-by-step explanation:

-10= -5/4v first multiply both sides of the equation by -4/5

-10(-4/5) = v this cancels out the right side.

multiply the left side.

so you are left with 40/5 = v

next, simplify you will get 8=v

8 0
3 years ago
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A system of two equations has no solution. One equation is -15x+y=18.
DerKrebs [107]

A.

If you multiply the original equation by 3 you get -45x+3y=54, which is the exact same as A, therefore they have infinite solutions.

5 0
3 years ago
In a particular classroom, a student who did not study scored 60 points on a test. If that student scored 90 points when studyin
Oksanka [162]
30 points over 3 hours equals: 10 points/hr
5 0
3 years ago
Help please. due soon.
Marat540 [252]

Answer:

10

Step-by-step explanation:

rise/run

rising 20 and running 2

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3 0
3 years ago
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A sprinkler sprays a section of 200 degrees with a radius of water reaching 5 meters.
beks73 [17]

Answer: The area that it covers is 78.53 square meters

Step-by-step explanation:

Hi, to answer this question we have to apply the next formula:

Area of a circle (A): π r²

Where:

r = radius (in our case is 5 meters)

So, replacing with the values given:

A= π (5)² = π 25 =78.53 square meters

In conclusion, the area that it covers is 78.53 square meters

Feel free to ask for more if needed or if you did not understand something.

7 0
3 years ago
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