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3 years ago

Please help me I don’t understand

Mathematics

2 answers:

kvv77 [185]3 years ago

6 0

Answer:

Step-by-step explanation:

arc AB = 49°

arc BAC = 107°+49° = 156°

major arc ABC = 204°

major arc ACB = 360°-49° = 311°

Brilliant_brown [7]3 years ago

5 0

Ajaksajakakakkaakajakkaak

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Solve by taking the square root I need help understanding steps this is hard for me.

Shalnov [3]

Answer:

x= $-2 \pm \sqrt{13}$

Step-by-step explanation:

Given: $3x^{2} -12x+27= 0$

This is a quadratic equation.

$3x^{2} -12x+27= 0$

Taking common 3 from the equation given

⇒ $3(x^{2} -4x+9)=0$

dividing both side by 3

⇒ $x^{2} -4x+9=0$

By using different factor, we can observe this trinomial can not be factored.

∴ solving it by completing the square.

⇒ $x^{2} -4x+9=0$

adding 9 on both side

⇒ $x^{2} -4x= 9$

To get a perfect square number as coeffecient of x is 4, lets add both side by 4.

⇒ $x^{2} -4x+4= 13$

we know, $(x+2)^{2} = x^{2} +2\times x\times 2+2^{2}$

∴ $(x+2)^{2} =13$

Taking Square root on both side, remember; √a²= a

⇒ $(x+2)= \sqrt{13}$

opening parenthesis

⇒ $x+2= \sqrt{13}$

subtracting both side by 2

∴ x= $-2 \pm \sqrt{13}$

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3 years ago

What is the formula for a proportional relationship

BigorU [14]

Answer:

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Step-by-step explanation:

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2 years ago

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Hope this helps.

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2 years ago

Read 2 more answers

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2 years ago

A rectangle and a triangle have the same base measurement and area. how does the height of the triangle compare to the height of

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Answer:

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3 years ago