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Levart [38]
3 years ago
14

Jay wants to buy 4 shirts which were originally priced at $15.95 each. He purchased the 4 shirts at a 20% off sale and pays a 6.

5% sales tax on the total cost. Including tax, what will be the total cost?
Mathematics
1 answer:
Murrr4er [49]3 years ago
6 0

Answer:

I think its $32.50

Step-by-step explanation:

15.95 * 4 = 63.8

63.8 / 1/5 = 12.76

20% = 1/5

319 + 6 1/2 = 32.50

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What is the solution to this equation 1/2n^2+18=0
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Answer:

n = ±6 .

Step-by-step explanation:

A quadratic equation is given to us and we need to find out the solution of the given equation . The given equation is ,

\rm\implies -\dfrac{1}{2}n^2+18=0

Subtracting 18 both sides ,

\rm\implies -\dfrac{1}{2}n^2 = -18

Multiplying both sides by -2 ,

\rm\implies -2\times\dfrac{1}{2}n^2 = -2\times -18

On simplyfing , we get ,

\rm\implies n^2= 36

Putting squareroot both sides ,

\rm\implies n= \sqrt{36}

This equals to ,

\rm\implies \boxed{\quad\blue{\rm n =\pm 6 }}

<u>Hence</u><u> the</u><u> </u><u>value</u><u> of</u><u> </u><u>n </u><u>is </u><u>±</u><u>6</u><u> </u><u>.</u>

6 0
3 years ago
Triangle DEF is an isosceles, so DEF = DFE.
Katarina [22]

Answer:

m∠CFD=105\°

Step-by-step explanation:

we know that

m∠CFD+m∠DFE=180\° ------> by supplementary angles

we have

that

m∠DFE=m∠DEF=75\°

so

m∠CFD+75\°=180\°

m∠CFD=180\°-75\°=105\°

8 0
3 years ago
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Percent of change from 115 to 338
MrRa [10]

Answer:

237 ⁹/23% change

Step-by-step explanation:

115=100%

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115=100

273=?

273×100÷115= 237 ⁹/23%

Answer =237⁹/23%

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alexandr1967 [171]

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Step-by-step explanation:

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Given ABD =≈ CBD
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Answer:

AD BC only

Step-by-step explanation:

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