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alekssr [168]
3 years ago
8

TV has a listed price of 623.98 if the sales tax rate is 8.5 find the total cost of the TV with the sales tax included​

Mathematics
1 answer:
Anastasy [175]3 years ago
4 0

Answer:

$677.02

Step-by-step explanation:

623.98 increase 8.5% =

623.98 × (1 + 8.5%) = 623.98 × (1 + 0.085) = 677.0183

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makkiz [27]
Step by step:
3 2 1
× 6 4
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+ 1 2 8 4
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2 years ago
Which is an equation of the line with a slope of 2 that passes through (3,−5)?
Naya [18.7K]

Answer:

equation of a line= y-y¹=m(x-x¹)

y--5=2(x-3)

y+5=2x-6

y=2x-6+5

y=2x-1

7 0
3 years ago
Jane had of a meter of ribbon. She used of a meter of ribbon to decorate a card. How much ribbon did she have left after she dec
emmainna [20.7K]
She had none left. if she only had a meter and then used a meter there would be none left.
5 0
2 years ago
PLEASE HELP ME!
Westkost [7]

Answer:

75.09%

Step-by-step explanation:

1st week: 1060

2nd week: 950

3rd week: 1090

4th week: 795

Percent decrease from first to fourth week is 75.09%

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5 0
3 years ago
The amount A of the radioactive element radium in a sample decays at a rate proportional to the amount of radium present. Given
slavikrds [6]

Answer:

a) \frac{dm}{dt} = -k\cdot m, b) m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }, c) m(t) = 10\cdot e^{-\frac{t}{2438.155} }, d) m(300) \approx 8.842\,g

Step-by-step explanation:

a) Let assume an initial mass m decaying at a constant rate k throughout time, the differential equation is:

\frac{dm}{dt} = -k\cdot m

b) The general solution is found after separating variables and integrating each sides:

m(t) = m_{o}\cdot e^{-\frac{t}{\tau} }

Where \tau is the time constant and k = \frac{1}{\tau}

c) The time constant is:

\tau = \frac{1690\,yr}{\ln 2}

\tau = 2438.155\,yr

The particular solution of the differential equation is:

m(t) = 10\cdot e^{-\frac{t}{2438.155} }

d) The amount of radium after 300 years is:

m(300) \approx 8.842\,g

4 0
3 years ago
Read 2 more answers
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