If the whole line is JL, then JK+KL=JL
JK:5x+8
KL:4x+4
5x+8+4x+4=84
Get all like terms on one side
5x+8+4x+4=84
-8 -4
5x+4x= 72
9x=72
x=8
Plug it into the equation
5(8)+ 8= 48
4(8)+4= 36
———————
84
So x=8
JK=48
KL=36
Answer:
The final answers are x = 5 OR x = -1.
Step-by-step explanation:
Given the equation is x^2 -5 = 4x
Rewriting it in quadratic form as:- x^2 -4x -5 = 0.
a = 1, b = -4, c = -5.
Using Quadratic formula as follows:- x = ( -b ± √(b² -4ac) ) / (2a)
x = ( 4 ± √(16 -4*1*-5) ) / (2*1)
x = ( 4 ± √(16 +20) ) / (2)
x = ( 4 ± √(36) ) / (2)
x = ( 4 ± 6 ) / (2)
x = (4+6) / (2) OR x = (4-6) / (2)
x = 10/2 OR x = -2/2
x = 5 OR x = -1
Hence, final answers are x = 5 OR x = -1.
Answer:
y = 2x -3
Step-by-step explanation:
y = 2x + b
plug the point in to the formula and solve for b
17 = 2 x 10 + b
b = -3
Use this to write the formula y = mx + b
m is slope
Answer: -10, 10
Step-by-step explanation:
first lets add the two equations. add the x's, add the y's, add the constants on the right.
we get
0x - 1y = -10
so then divide --10 by -1 because we do the opposite operations to both sides
and we get y = 10
now substitute y = 10 into the first equation
-10x - 9(10) = 10
and then we get -10x - 90 = 10
now add 90 to both sides
-10x = 100
divide 100 by -10
x = -10
y = 10
checks out
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