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1 year ago

What is the equation of 7.2+c=19 ?

Mathematics

2 answers:

Goryan [66]1 year ago

3 0

Answer:

Your answer is 5.

Step-by-step explanation:

7.2 + c = 19

or, 14 + c = 19

or, c = 19 - 14

or, c = 5 ans.

Hope its helpful :-)

Citrus2011 [14]1 year ago

3 0

7.2 + c = 19

c = 19 - 7.2

c = 11.8

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Give two examples of a term that could combine with -5xy

kherson [118]

Answer:

-20x 87y

Step-by-step explanation:

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3 years ago

Oil is leaking out of a ruptured tanker at the rate of r(t)=30e^(?0.09t) thousand liters per minute.

zmey [24]

Answer:

At t = 0, oil is leaking out of a ruptured tanker at the rate of 30 thousand liters per minute.

At t = 60, oil is leaking out of a ruptured tanker at the rate of 0.1355 thousand liters per minute.

331.82 thousands of liters leak out during the first hour.

Step-by-step explanation:

The oil leakage rate, in thousand liters per minute, is:

$r(t) = 30e^{-0.09t}$

A. At what rate, in thousands of liters per minute, is the oil leaking out

At t = 0:

This is r(0)

$r(t) = 30e^{-0.09t}$

$r(0) = 30e^{-0.09*0} = 30$

At t = 0, oil is leaking out of a ruptured tanker at the rate of 30 thousand liters per minute.

At t = 60:

This is r(60)

$r(t) = 30e^{-0.09t}$

$r(60) = 30e^{-0.09*60} = 0.1355$

At t = 60, oil is leaking out of a ruptured tanker at the rate of 0.1355 thousand liters per minute.

B. How many thousands of liters leak out during the first hour?

r(t) is in thousand liters per minute.

Each hour has 60 minutes.

So the answer to this question is the integral from 0 to 60 of r(t).

Integral of the exponential function

$\int {e^{at}} \, dt = \frac{e^{at}}{a}$

$\int\limits^{60}_0 {r(t)} \, dt$

$\int\limits^{60}_0 {30e^{-0.09t}} \, dt$

$-333.33e^{-0.09t}$ , from t = 0 to t = 60.

This is

$-333.33e^{-0.09*60} - (-333.33e^{-0.09*0}) = 331.82$

331.82 thousands of liters leak out during the first hour.

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4 years ago

Solve the inequality 2x(4+3x)<6x ² −5x+6

aleksandrvk [35]

Answer:

$x < \frac{6}{13}$

Step-by-step explanation:

Please see attached picture for full solution.

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4 years ago

What is the following answer the equation 275 4/5 + 20.2 and what is 275 4/5 - 20.2

Lady_Fox [76]

Answer: 275 + $\frac{4}{5}$ +20.2 = 296

275 + $\frac{4}{5}$ - 20. = 255.

Step-by-step explanation:

275 + $\frac{4}{5}$ + 20.2 (

= 275 + 0.8 + 20.2

= 275.8 + 20.2 = 296

275 + $\frac{4}{5}$ - 20.2

= 5 + 0.8 - 20.2 ( $\frac{4}{5}$ = 0.8)

= 275.8 - 20.2 = 255.

I hope this answer your

4 0

3 years ago

A car is discounted 10% and sells for $15,673. What was the discount amount?

Mice21 [21]

Answer:

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Step-by-step explanation:

The discounted amount is 100% -10% = 90% of the original. The amount of the discount is 10% of the original, or 1/9 of the discounted amount:

10% = 90% × 1/9

The discount was ...

$15,673/9 = 1,741.44

_____

Check

The original is the sum of the discounted amount and the discount:

original price = $15,673.00 +1,741.44 = $17, 414.44

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7 0

4 years ago

Read 2 more answers