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Gnom [1K]
3 years ago
9

Please help! What is the discriminant D of the equation? a^2-2a+5=0

Mathematics
1 answer:
miskamm [114]3 years ago
5 0
Anybody know? I need this
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Help me. I don't understand. Please help me find X and IK
sertanlavr [38]

Answer:

x=4\\\\y=6\\\\IK=47

Step-by-step explanation:

Two Tangent Theorem: Tangents which meet at same point are equal in length.

Here tangents at J and H meet at I.

Hence\ HI=IJ\\\\y^2-10=4y+2\\\\y^2-4y-12=0\\\\y^2-6y+2y-12=0\\\\y(y-6)+2(y-6)=0\\\\(y-6)(y+2)\\\\y\ can\ not\ be\ negative\ as\ in\ that\ case\ IJ\ will\ be\ negative.\\\\Hence\ y=6\\\\IJ=4y+2=4\times 6+2=26\\\\\\\\Tangents\ at\ J\ and\ L\ meet\ at\ K.\ Use\ two\ tangent\ theorem.\\\\JK=KL\\\\5x+1=6x-3\\\\6x-5x=1+3\\\\x=4\\\\JK=5x+1=5\times 4+1=21\\\\\\IK=IJ+JK=26+21\\\\IK=47

6 0
3 years ago
Plz help with this math problem
Virty [35]
Re-upload the photo you posted because it isnt showing up :(
4 0
3 years ago
The steps below show the incomplete solution to find the value of x for the equation
mafiozo [28]
Step 1: 6x - 2x - 5 = -6 + 21 
Step 2: 6x - 2x - 5 = 15 
Step 3: 4x - 5 = 15 

The next step would be to add 5 to both sides of the equation. 
so Step 3: 4x - 5 = 15 .......add 5 to both sides would make 
Step 4: 4x = 20 
 
So after the next step you would have 4x = 20 

Hope this helps! :) 

    
7 0
3 years ago
Solve for x: 3x+7 = 22 *
Lorico [155]
3x+7=22
Subtract 7 to both sides
3x=15
Divide by 3
x=5
4 0
3 years ago
Read 2 more answers
Please help me i need to know what angle "t" is
maria [59]
The angle is 90° degrees.
4 0
3 years ago
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