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Mathematics

2 answers:

Monica [59]3 years ago

4 0

Answer:

An $11 tip is 20%

Step-by-step explanation:

You have to multiply the percentage and the money amount, the equation would look like so 54.65 x .20= 109300 <----Is the answer you get but you have to move the decimal 4 places because of where the decimals are in the multipliers. So you get 10.9300 or $10.93 and rounded to the nearest dollar would be $11

Hope this helps if so please mark brainliest ;D

mario62 [17]3 years ago

4 0

Answer:

An $11 tip is 20%

Step-by-step explanation:

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P(x) = x^4+ax^3-x^2+bx-12 has factors of (x-2) and (x+1). Solve the equation P(x)=0

Feliz [49]

Answer:

because P(x) has factors of (x-2) and (x+1) => x = 2 and x = -1 are the solutions of P(x)

so we have:

$\left \{ {{2^{4}+2^{3}a-2^{2}+2b-12 =0} \atop {1-a-1-b-12=0}} \right.\\=>\left \{ {{8a+2b=0} \atop {a+b=-12}} \right.\\\left \{ {{4a+b=0} \atop {a+b=-12}} \right.\\\left \{ {{a=4} \atop {b=-16}} \right.$