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Lina20 [59]
3 years ago
11

Evaluate ∫ e3x dx. ExplAin answers please

Mathematics
1 answer:
Rufina [12.5K]3 years ago
7 0
Hello,
PLease, see the attached file.
Thanks.

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. The total cost (t) is proportional to the number (n) of items purchased at a constant price of $3.
navik [9.2K]

Answer

t = 3n

Step-by-step explanation:

n and t are proportional so you know they will be on the opposite ends of the equal sign. Then you know that the items are purchased at the constant price of $3. That means you do the number of items times 3 to get the total cost.

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Lydia's teacher wants her class to take note of the gas prices around town and round them all to the nearest whole number. Lydia
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drek231 [11]
It can't be a whole number. It can be 1.5, or 1 1/2.
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What is the discriminant of: 2x^2 - 7x + 3
fgiga [73]
The discriminant is 25
7 0
2 years ago
a ladder 5 meters long is leaning against a wall. the base of the ladder is sliding away from the wall at a rate of 1 meter per
Kruka [31]

Complete question :

a ladder 5 meters long is leaning against a wall. the base of the ladder is sliding away from the wall at a rate of 1 meter per second. how fast is the top of the ladder sliding down the wall at the instant when the base is 4 meters from the wall?

Answer:

-4/3 m/s

Step-by-step explanation:

Using Pythagoras :

a² = x² + c²

5² = x² + y² - - - (1)

The horizontal distance x with respect to time t = 1m/sec

dx/dt = 1m/sec

To obtain the vertical height 'y' with respect to time t when x = 4

5² = x² + y²

Wen x = 4

5² = 4² + y²

25 = 16 + y²

y =√(25 - 16)

y = 3

Differentiate (1) with respect to t

x² + y² = 25 - ---- - (1)

2x * dx /dt + 2y dy/dt = 0

dx/dt = 1

x = 4.

y = 3

2(4)(1) + 2(3) * dy/dt = 0

8 + 6dy/dt = 0

6 dy/dt = - 8

dy/dt = - 8/6

dy/dt = - 4/3

8 0
3 years ago
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