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tresset_1 [31]
3 years ago
8

Suppose the sales tax rate in your area is 7.5%. Complete the explanation of how to determine the total cost, including tax, of

an eReader that costs $135. Round to the nearest cent if necessary.
Mathematics
2 answers:
liberstina [14]3 years ago
6 0

Answer:

145.13

Step-by-step explanation:

135×7.5%=10.125 round to 10.13

135+10.13=145.13

viktelen [127]3 years ago
3 0

Answer:

It would be- $145.13

Step-by-step explanation:

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Fed [463]

Answer:

x=2

Step-by-step explanation:

-14x+28+6x=-44

-8x+28=-44

-8x= -16

x=2

6 0
3 years ago
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You use 4 gallons of water on 14 plants in your garden. At this rate, how much water will it take to water 35 plants?
Sidana [21]
14 plants divided by 4 gallons equals 3.5 plants per every 1 gallon. 35 divided by 3.5 equals 10 gallons.
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3 years ago
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Dy/dx= y^4 and y(2)= -1. Y(-1)=
cupoosta [38]

It looks like you're asked to find the value of y(-1) given its implicit derivative,

\dfrac{dy}{dx} = y^4

and with initial condition y(2) = -1.


The differential equation is separable:

\dfrac{dy}{y^4} = dx

Integrate both sides:

\displaystyle \int \frac{dy}{y^4} = \int dx

-\dfrac1{3y^3} = x + C

Solve for y :

\dfrac1{3y^3} = -x + C

3y^3 = \dfrac1{-x+C} = -\dfrac1{x + C}

y^3 = -\dfrac1{3x+C}

y = -\dfrac1{\sqrt[3]{3x+C}}

Use the initial condition to solve for C :

y(2) = -1 \implies -1 = -\dfrac1{\sqrt[3]{3\times2+C}} \implies C = -5

Then the particular solution to the differential equation is

y(x) = -\dfrac1{\sqrt[3]{3x-5}}

and so

y(-1) = -\dfrac1{\sqrt[3]{3\times(-1)-5}} = \boxed{\dfrac12}

6 0
2 years ago
My index finger is 3.2in long... so in cm is it 8.128cm?
kiruha [24]
Yes that is correct..
8 0
3 years ago
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Consider the following pair of equations: −x − y = −5 y = x + 1 If the two equations are graphed, at what point do the lines rep
Mnenie [13.5K]
-x - y = -5
y = x + 1

-x -(x + 1) = -5
-x - x - 1 = -5
-2x = -5 + 1
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x = -4/-2
x = 2

y = x + 1
y = 2 + 1
y = 3

solution is : (2,3)
6 0
3 years ago
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