3 years ago

Adalyn has a silver bracelet that is made from 1.7 g of copper and 22.3 g of silver.

Mathematics

1 answer:

vodka [1.7K]3 years ago

6 0

1.7 : 22.3
17 : 223 is the ratio. Times 10 throughout

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It is given 5 and h + 1 are the roots of the quadratic equation x² + (k - 1)x - 5 = 0,where h and k are constant.Find the value

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Hello,

Step-by-step explanation:

$5\ is\ a \ root \of \ x^2+(k-1)*x-5=0\\\\5^2+(k-1)*5-5=0\\\\5*(k-1)+20=0\\\\k-1=\dfrac{-20}{5} \\\\k=-4+1\\\\\boxed{k=-3}\\$

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