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JulijaS [17]
3 years ago
5

Please help_________​

Mathematics
2 answers:
Nostrana [21]3 years ago
7 0

Answer:85

Step-by-step explanation:

Arisa [49]3 years ago
4 0

Answer:

the second one

Step-by-step explanation:

surface area = area of all the sides (incl. bottom)

area of the bottom is 5x5 ft = 25 ft^2

area of one side is (6x5)/2 = 15 ft^2

there are four sides so the total surface area is 25+4(15)= 85ft^2

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AVprozaik [17]

Answer:

a) So, this integral is convergent.

b) So, this integral is divergent.

c) So, this integral is divergent.

Step-by-step explanation:

We calculate the next integrals:

a)

\int_1^{\infty} e^{-2x} dx=\left[-\frac{e^{-2x}}{2}\right]_1^{\infty}\\\\\int_1^{\infty} e^{-2x} dx=-\frac{e^{-\infty}}{2}+\frac{e^{-2}}{2}\\\\\int_1^{\infty} e^{-2x} dx=\frac{e^{-2}}{2}\\

So, this integral is convergent.

b)

\int_1^{2}\frac{dz}{(z-1)^2}=\left[-\frac{1}{z-1}\right]_1^2\\\\\int_1^{2}\frac{dz}{(z-1)^2}=-\frac{1}{1-1}+\frac{1}{2-1}\\\\\int_1^{2}\frac{dz}{(z-1)^2}=-\infty\\

So, this integral is divergent.

c)

\int_1^{\infty} \frac{dx}{\sqrt{x}}=\left[2\sqrt{x}\right]_1^{\infty}\\\\\int_1^{\infty} \frac{dx}{\sqrt{x}}=2\sqrt{\infty}-2\sqrt{1}\\\\\int_1^{\infty} \frac{dx}{\sqrt{x}}=\infty\\

So, this integral is divergent.

4 0
4 years ago
How do you do this question?
Bess [88]

"T<u>he function is decreasing":</u>

This means the slope of the function will be negative at the given point.  Anywhere the line is going down, from left to right, is decreasing.  This eliminates choices A and C.

<u>"The function is concave down":</u>

This means the curve of the function will be open down (think of an upside down u).  This eliminates choice E.

<u>"f(x)>0":</u>

This is anywhere the curve is above the x axis.  This eliminates choice D.

The answer is Choice B) x=2.

Hope this helps!!

3 0
4 years ago
Help me out ? it would help alot
Dafna1 [17]
The method that is not correct is brandon's method.
8 0
3 years ago
Read 2 more answers
1. Which of the following linear equations has
Anon25 [30]
General equation: y = mx + c
where m is the slope.
So if there’s a negative sign on mx, it is a negative slope and vice versa.
3 0
3 years ago
Bob’s heart rate is 68 beats per minute. a. If this is his average heart rate, how many times will his heart beat in 15 years? b
cluponka [151]

Answer:

Try googling it

Step-by-step explanation:

8 0
3 years ago
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