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pickupchik [31]
3 years ago
8

The sales tax for a certain state can be found by multiplying the purchase price by . What is the sales tax on an item that is $

19.49? Express your answer as a decimal rounded to the nearest hundredth.
Mathematics
1 answer:
Tamiku [17]3 years ago
6 0
Ok any more details or is that the question?
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Solve x4 – 17x2 + 16 = 0.<br> Let u =<br> Select all of the zeroes of the function. i i
Soloha48 [4]

Solve \ x^4 - 17x^2 + 16 = 0

To solve this equation , we need to write it in quadratic form

ax^2+bx+c=0

To get the equation in quadratic form we replace x^2 with u

x^2 = u

x^4 - 17x^2 + 16 = 0 can be written as

(x^2)^2 - 17x^2 + 16 = 0, Replace u for x^2

So equation becomes

u^2 - 17u + 16 = 0

Now we factor the left hand side

-16  and -1  are the two factors whose product is +16  and sum is -17

(u-16) (u-1) = 0

u -16 = 0  so u=16

u-1 =0  so u=1

WE assume u = x^2, Now we replace u with x^2

u = 16 so \ it \ becomes \ x^2 =16

Now take square root on both sides , x= +4  and x=-4

u = 1 so \ it \ becomes \ x^2 =1

Now take square root on both sides , x= +1  and x=-1

So zeros of the function are -4, -1, 1, 4


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Tim has x beads. Amy has two more beads than Tim. Sarah has five times as many beads as Amy. How many beads does Sarah have?
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Answer:well we need to know how mmch tim has so like

x?+2 is amy

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Step-by-step explanation:

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Can someone solve number 1 for me??
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1. R,y I’m sorry if it’s wrong
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