So first we need to get rid of that naughty sales tax so we need to divide 30.45 by 1.05 since 30.45 is 105% of the pre-tax price. We get the answer of 29 and subtract 12 from 29 since the long fleece socks cost 12 bucks and we get 17 dollars. Since there are 2 pairs of regular songs we divide 17 by 2 and get 8.5

So the regular socks cost $8.50

Checking work 8.5*2=17
12+17=29
1.05*29=30.45

If u need more help feel free to ask me

3 0

3 years ago

Please help!! Evaluate the piece wise function at x=-4 and x=4.

hodyreva [135]

x = -4, so use the first equation, x^2 = -4^2 = -16

x = 4, use 3rd equation, sqrt(x) = sqrt(4) = 2

4 0

3 years ago

If 3/2 divided by 1/4 =n , then n is between

kari74 [83]

OK, this written in numbers is

$\frac{3/2}{1/4} =n$

But, fractions can not divide. So we need to multiply one by the reciprocal of the other. The reciprocal of a fraction is itself flipped upside down. For example, the reciprocal of 1/2 would be 2/1.

So, we will multiply 3/2 by 4/1. We know how to do this, it is simply 3/2*4=12/2=6.

So, the answer is n = 6. That would be answer c, because 6 is between 5 and 7.

3 0

4 years ago

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