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MariettaO [177]
3 years ago
15

You purchase 10.75 gallons of gasoline at 2.45/gallon. You also bought gum .65 and windshield wiper fluid 4.97 the state has a f

ood tax of 4% and you gave the clerk 20.00 how much is charged to you debt card
Mathematics
2 answers:
kipiarov [429]3 years ago
8 0

<h2>Correct Answer   $11.99</h2>
torisob [31]3 years ago
5 0
10.75*2.45=  $26.3375 + $.06 + $4.97 + 0.026 = $31.3935 - $20 = $11.3935
≈ $ 11.40 
Food tax applies on to gum of 0.65 = 0.026
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13....................
Mashcka [7]

13.

(a)

y=-5x^2+21x-3

for x = 2:

y=-5(2)^2+21(2)-3=-20+42-3=19

for x = 5

y=-5(5)^2+21(5)-3=-125+105-3=-23

(b)

The graph is:

(c)

Using the graph:

\begin{gathered} x=1.8,y=18.6 \\ x=0.548,y=7 \\ x=3.65,y=7 \end{gathered}\begin{gathered} x=1.8 \\ y=-5(1.8)^2+21(1.8)-3=-16.2+37.8-3=18.6 \end{gathered}\begin{gathered} y=7 \\ -5x^2+21x-3=7 \\ -5x^2+21x-10=0 \end{gathered}

Using the quadratic formula:

\begin{gathered} x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ x=\frac{-21\pm\sqrt[]{21^2-4(-5)(-10)}}{2(-5)} \\ x=\frac{-21\pm\sqrt[]{241}}{-10} \\ x=0.54758 \\ or \\ x=3.6524 \end{gathered}

6 0
1 year ago
he sum of the first two terms of a G.P is 27 whereas the sum of the second and third term is 54. Find the first term and the com
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Answer:

{ \tt{sum =  \frac{a(r {}^{n - 1} )}{n - 1} }} \\ 27 =  \frac{a(r {}^{2 - 1} )}{2 - 1}  \\ { \bf{27 = ar -  -  - (i)}} \\  \\ 54 =  \frac{a( {r}^{3 - 1} )}{3 - 1}  \\ { \bf{108 = a {r}^{2} -  -  - (ii) }} \\ { \tt{(ii) \div (i) : }} \\ r =  \frac{108}{27}  \\ { \bf{common \: ratio = 4}} \\ { \bf{first \: term =  \frac{27}{4}  }}

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3 years ago
at the convince store, 24 pack of water bottles are selling for $3.99 for 1 pack, or $9.99 for 3 packs. hiw much money per pack
Fantom [35]

Answer:

you would save .66 per pack so .66×3=1.98

Step-by-step explanation:

9.99÷3=3.33, 3.99-3.33=.66

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