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ANTONII [103]
3 years ago
7

Find the sales tax of an item that costs $42 and has a 8.25% sales tax.Round approximately.

Mathematics
1 answer:
dolphi86 [110]3 years ago
3 0

Answer:

42 times 1.0825 = 45.465 rounding up to the nearest cent is 45.47 A.

Step-by-step explanation:


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-3x^{2}-21x-54 what are the zeros? (Solutions)
Irina-Kira [14]
The only way to solve if it is equal to something
assuming that the teacher wanted you to make it equal to zero do
0=-3x^2-21x-54

remember if we can do
xy=0 then assume x and y=0

so factor

0=-3x^2-21x-54
undistribute the -3
0=-3(x^2+7x+18)
remember 0 times anything=0 so
x^2+7x+18 must equal zero
use quadratice formula which is

if you have
ax^2+bx+c=0 then
x=\frac{-b+/- \sqrt{b^{2}-4ac} }{2a}

x^2+7x+18
a=1
b=7
c=18

x=\frac{-7+/- \sqrt{7^{2}-4(1)(18)} }{2(1)}
x=\frac{-7+/- \sqrt{49-72} }{2}
x=\frac{-7+/- \sqrt{-23} }{2}
i=√-1
x=\frac{-7+/- i\sqrt{23} }{2}



the zerose would be
x=\frac{-7+ i\sqrt{23} }{2} or \frac{-7- i\sqrt{23} }{2}




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The Golden Gate Bridge, which connects San Francisco to Marin County, is one of the most famous suspension bridges in the U.S. T
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Step-by-step explanation:

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Step-by-step explanation:

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