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3 years ago

Evaluate. Write your answer as a fractionin simplest form. 216−(−83)+(−479)

Mathematics

1 answer:

avanturin [10]3 years ago

4 0

Answer:

-180

Step-by-step explanation:

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The cost, in dollars, of a one-day car rental is given by c(x) = 31 0.18x, where x is the number of miles driven. in this functi

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<span>B) 31 is the cost per day to rent the car and $0.18 is the cost per mile.</span> The $31 cost is fixed, then 18 cents is added for each mile driven.

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3 years ago

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A 1000 gallon tank, initially full of water, develops a leak at the bottom. Given that 300 gallons of water leak out in the firs

Over [174]

Answer:

option F

Step-by-step explanation:

given,

capacity of tank = 1000 gallon

volume of water leak = 300 gallon

time = 30 min

water is leaking at the rate

formula used

$A = B e^{-kt}$

At t = 0 A = 1000 gallons

$1000= B e^{-k\times 0}$

B = 1000

$A = 1000 e^{-kt}$

at t = 30 A = 700

$700= 1000 e^{-k\times 30}$

$e^{-k\times 30}=0.7$

taking ln both side

$-k\times 30=ln(0.7)$

$k=-\dfrac{ln(0.7)}{30}$

now,

$A = 1000 e^{\dfrac{ln(0.7)}{30}t}$

$A = 1000\times 0.7 e^{\dfrac{t}{30}}$

$A = 700 e^{\dfrac{t}{30}}$

hence, the correct answer is option F

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4 years ago

Help please 10 points!!

elena-14-01-66 [18.8K]

63 dog is what I would think,

they are congruent

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3 years ago

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Convert: 44.8 L = ______ kL

KATRIN_1 [288]

44.8 L = 0.0448 kL so your answer is 0.0448 kL

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3 years ago

Solve the rational equation

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Answer:

1) x=1; x= 0 is an extraneous solution

Step-by-step explanation:

5 = 4x + 1

5 = 4 x 1 + 1

5 = 5

x = 1

______________________

x x^2

0 x 0^2

0 x 0 = 0

x = 0

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2 years ago