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Debora [2.8K]
2 years ago
11

Plz ans asap i havd limited time ill give brainliest

Mathematics
2 answers:
GarryVolchara [31]2 years ago
6 0
C) $128.

50% off of 320 is 160. And then there is an additional 20% off; 20% off of 160 is 160*0.8=128.
Artemon [7]2 years ago
5 0

Answer:

C. $128

Step-by-step explanation:

320 x 0.5 = 160

320 - 160 = 160

160 x 0.20 = 32

160 - 32 = 128

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Use the expression in the accompanying discussion of sample size to find the size of each sample if you want to estimate the dif
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n= p1+q1×p2 4pq

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What is 69 x 420 <br> Can you sub to me please?
Alex17521 [72]

Answer:

69x420=28,980

Step-by-step explanation:

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an employee has an annual salary of $48,700. they receive $1,530 in health insurance and $2,810 in paid time off per year. they
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8 0
2 years ago
F:[1/2,infinity)—&gt;[3/4,infinity) <br> f(x)=x^2-x+1 <br> find the inverse of f(x);please explain
dexar [7]

Answer:

f^{-1}(x)=\frac{1}{2}+\sqrt{x-\frac{3}{4}}

Step-by-step explanation:

y=x^2-x+1

We want to solve for x.

I'm going to use completing the square.

Subtract 1 on both sides:

y-1=x^2-x

Add (-1/2)^2 on both sides:

y-1+(-1/2)^2=x^2-x+(-1/2)^2

This allows me to write the right hand side as a square.

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Now remember we are solving for x so now we square root both sides:

\pm \sqrt{y-3/4}=x-1/2

The problem said the domain was 1/2 to infinity and the range was 3/4 to infinity.

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That is we want:

\sqrt{y-3/4}=x-1/2

Add 1/2 on both sides:

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The last step is to switch x and y:

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f^{-1}(x)=1/2+\sqrt{x-3/4}

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2 years ago
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