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babunello [35]
2 years ago
9

M is the centroid of △DEF. There is a triangle DEF in which J, K, and L are the points on the side DE, side EF, and side DF resp

ectively. Segment DK, segment EL, and segment FJ intersect each other at point M. The length of DM is 8, the length of MJ is 2y, the length of EM is 6, and the length of FM is 2x. What is an expression for FJ? Select all that apply. A. 2x + 2y B. 3x C. 6y D. 3y
Mathematics
2 answers:
yanalaym [24]2 years ago
8 0

Answer:

B

Step-by-step explanation:

Mumz [18]2 years ago
3 0

Answer:

B

Step-by-step explanation:

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Answer:

Vertical intercepts: (-2,pi/2) and (-10,pi/2)

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Step-by-step explanation:

I took the test and got it right.

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Find the intersection points using substitution or elimination for each system of equations:
natka813 [3]

Answer:

Step-by-step explanation:

Okay, so I think I know what the equations are, but I might have misinterpreted them because of the syntax- I think when you ask a question you can use the symbols tool to input it in a more clear way, otherwise you can use parentheses and such.

Problem 1:

(x²)/4 +y²= 1

y= x+1

*substitute for y*

Now we have a one-variable equation we can solve-

x²/4 + (x+1)² = 1

x²/4 + (x+1)(x+1)= 1

x²/4 + x²+2x+1= 1

*subtract 1 from both sides to set equal to 0*

x²/4 +x^2+2x=0

x²/4 can also be 1/4 * x²

1/4 * x² +1*x² +2x = 0

*combine like terms*

5/4 * x^2+2x+ 0 =0

now, you can use the quadratic equation to solve for x

a= 5/4

b= 2

c=0

the syntax on this will be rough, but I'll do my best...

x= (-b ± √(b²-4ac))/(2a)

x= (-2 ±√(2²-4*(5/4)*(0))/(2*(5/4))

x= (-2 ±√(4-0))/(2.5)

x= (-2±2)/2.5

x will have 2 answers because of ±

x= 0 or x= 1.6

now plug that back into one of the equations and solve.

y= 0+1 = 1

y= 1.6+1= 2.6

Hopefully this explanation was enough to help you solve problem 2.

Problem 2:

x² + y² -16y +39= 0

y²- x² -9= 0

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3 years ago
Find the coordinates of the missing endpoint if M is the midpoint of DF <br> F(2,9) M(-1,6)
Hunter-Best [27]

Answer:

(-4,3)

Step-by-step explanation:

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3 years ago
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Salsk061 [2.6K]

Answer:

RT and KS

Step-by-step explanation:

isosceles triangle

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